On Thu, 9 May 2013, Jakub Jelinek wrote:
> Hi!
>
> The bit_rotate: code in fold-const.c handles only a subset of rotates,
> and e.g. with C++ FE when sizeof isn't folded early fold_binary often
> even isn't called with something that could recognize the rotate pattern,
> even if bit_rotate: has been extended. Furthermore, not all the rotate
> patterns need to be written in a single statement.
>
> So, this patch adds a rotate pattern recognizer into forwprop, and handles
> several different patterns, the comment above the function shows which ones.
>
> Bootstrapped/regtested on x86_64-linux and i686-linux.
>
> On the Botan KASUMI distilled testcase (PR55278 #c6 at -O3) I get 6.3%
> speedup on Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz and 9.9% speedup on
> Quad-Core AMD Opteron(tm) Processor 8354.
>
> Ok for trunk?
Ok.
Thanks,
Richard.
> 2013-05-09 Jakub Jelinek <ja...@redhat.com>
>
> PR tree-optimization/45216
> PR tree-optimization/57157
> * tree-ssa-forwprop.c (simplify_rotate): New function.
> (ssa_forward_propagate_and_combine): Call it.
>
> * c-c++-common/rotate-1.c: New test.
> * c-c++-common/rotate-1a.c: New test.
> * c-c++-common/rotate-2.c: New test.
> * c-c++-common/rotate-2a.c: New test.
> * c-c++-common/rotate-3.c: New test.
> * c-c++-common/rotate-3a.c: New test.
> * c-c++-common/rotate-4.c: New test.
> * c-c++-common/rotate-4a.c: New test.
> * gcc.target/i386/rotate-1.c: Accept rolb or rorb instruction.
>
> --- gcc/tree-ssa-forwprop.c.jj 2013-04-22 08:06:41.000000000 +0200
> +++ gcc/tree-ssa-forwprop.c 2013-05-09 15:31:49.350000512 +0200
> @@ -2124,6 +2124,242 @@ simplify_bitwise_binary (gimple_stmt_ite
> }
>
>
> +/* Recognize rotation patterns. Return true if a transformation
> + applied, otherwise return false.
> +
> + We are looking for X with unsigned type T with bitsize B, OP being
> + +, | or ^, some type T2 wider than T and
> + (X << CNT1) OP (X >> CNT2) iff CNT1 + CNT2
> == B
> + ((T) ((T2) X << CNT1)) OP ((T) ((T2) X >> CNT2)) iff CNT1 + CNT2 == B
> + (X << Y) OP (X >> (B - Y))
> + (X << (int) Y) OP (X >> (int) (B - Y))
> + ((T) ((T2) X << Y)) OP ((T) ((T2) X >> (B - Y)))
> + ((T) ((T2) X << (int) Y)) OP ((T) ((T2) X >> (int) (B - Y)))
> + (X << Y) OP (X >> ((-Y) & (B - 1)))
> + (X << (int) Y) OP (X >> (int) ((-Y) & (B - 1)))
> + ((T) ((T2) X << Y)) OP ((T) ((T2) X >> ((-Y) & (B - 1))))
> + ((T) ((T2) X << (int) Y)) OP ((T) ((T2) X >> (int) ((-Y) & (B - 1))))
> +
> + and transform these into:
> + X r<< CNT1
> + X r<< Y
> +
> + Note, in the patterns with T2 type, the type of OP operands
> + might be even a signed type, but should have precision B. */
> +
> +static bool
> +simplify_rotate (gimple_stmt_iterator *gsi)
> +{
> + gimple stmt = gsi_stmt (*gsi);
> + tree arg[2], rtype, rotcnt = NULL_TREE;
> + tree def_arg1[2], def_arg2[2];
> + enum tree_code def_code[2];
> + tree lhs;
> + int i;
> + bool swapped_p = false;
> + gimple g;
> +
> + arg[0] = gimple_assign_rhs1 (stmt);
> + arg[1] = gimple_assign_rhs2 (stmt);
> + rtype = TREE_TYPE (arg[0]);
> +
> + /* Only create rotates in complete modes. Other cases are not
> + expanded properly. */
> + if (!INTEGRAL_TYPE_P (rtype)
> + || TYPE_PRECISION (rtype) != GET_MODE_PRECISION (TYPE_MODE (rtype)))
> + return false;
> +
> + for (i = 0; i < 2; i++)
> + defcodefor_name (arg[i], &def_code[i], &def_arg1[i], &def_arg2[i]);
> +
> + /* Look through narrowing conversions. */
> + if (CONVERT_EXPR_CODE_P (def_code[0])
> + && CONVERT_EXPR_CODE_P (def_code[1])
> + && INTEGRAL_TYPE_P (TREE_TYPE (def_arg1[0]))
> + && INTEGRAL_TYPE_P (TREE_TYPE (def_arg1[1]))
> + && TYPE_PRECISION (TREE_TYPE (def_arg1[0]))
> + == TYPE_PRECISION (TREE_TYPE (def_arg1[1]))
> + && TYPE_PRECISION (TREE_TYPE (def_arg1[0])) > TYPE_PRECISION (rtype)
> + && has_single_use (arg[0])
> + && has_single_use (arg[1]))
> + {
> + for (i = 0; i < 2; i++)
> + {
> + arg[i] = def_arg1[i];
> + defcodefor_name (arg[i], &def_code[i], &def_arg1[i], &def_arg2[i]);
> + }
> + }
> +
> + /* One operand has to be LSHIFT_EXPR and one RSHIFT_EXPR. */
> + for (i = 0; i < 2; i++)
> + if (def_code[i] != LSHIFT_EXPR && def_code[i] != RSHIFT_EXPR)
> + return false;
> + else if (!has_single_use (arg[i]))
> + return false;
> + if (def_code[0] == def_code[1])
> + return false;
> +
> + /* If we've looked through narrowing conversions before, look through
> + widening conversions from unsigned type with the same precision
> + as rtype here. */
> + if (TYPE_PRECISION (TREE_TYPE (def_arg1[0])) != TYPE_PRECISION (rtype))
> + for (i = 0; i < 2; i++)
> + {
> + tree tem;
> + enum tree_code code;
> + defcodefor_name (def_arg1[i], &code, &tem, NULL);
> + if (!CONVERT_EXPR_CODE_P (code)
> + || !INTEGRAL_TYPE_P (TREE_TYPE (tem))
> + || TYPE_PRECISION (TREE_TYPE (tem)) != TYPE_PRECISION (rtype))
> + return false;
> + def_arg1[i] = tem;
> + }
> + /* Both shifts have to use the same first operand. */
> + if (TREE_CODE (def_arg1[0]) != SSA_NAME || def_arg1[0] != def_arg1[1])
> + return false;
> + if (!TYPE_UNSIGNED (TREE_TYPE (def_arg1[0])))
> + return false;
> +
> + /* CNT1 + CNT2 == B case above. */
> + if (host_integerp (def_arg2[0], 1)
> + && host_integerp (def_arg2[1], 1)
> + && (unsigned HOST_WIDE_INT) tree_low_cst (def_arg2[0], 1)
> + + tree_low_cst (def_arg2[1], 1) == TYPE_PRECISION (rtype))
> + rotcnt = def_arg2[0];
> + else if (TREE_CODE (def_arg2[0]) != SSA_NAME
> + || TREE_CODE (def_arg2[1]) != SSA_NAME)
> + return false;
> + else
> + {
> + tree cdef_arg1[2], cdef_arg2[2], def_arg2_alt[2];
> + enum tree_code cdef_code[2];
> + /* Look through conversion of the shift count argument.
> + The C/C++ FE cast any shift count argument to integer_type_node.
> + The only problem might be if the shift count type maximum value
> + is equal or smaller than number of bits in rtype. */
> + for (i = 0; i < 2; i++)
> + {
> + def_arg2_alt[i] = def_arg2[i];
> + defcodefor_name (def_arg2[i], &cdef_code[i],
> + &cdef_arg1[i], &cdef_arg2[i]);
> + if (CONVERT_EXPR_CODE_P (cdef_code[i])
> + && INTEGRAL_TYPE_P (TREE_TYPE (cdef_arg1[i]))
> + && TYPE_PRECISION (TREE_TYPE (cdef_arg1[i]))
> + > floor_log2 (TYPE_PRECISION (rtype))
> + && TYPE_PRECISION (TREE_TYPE (cdef_arg1[i]))
> + == GET_MODE_PRECISION (TYPE_MODE (TREE_TYPE (cdef_arg1[i]))))
> + {
> + def_arg2_alt[i] = cdef_arg1[i];
> + defcodefor_name (def_arg2_alt[i], &cdef_code[i],
> + &cdef_arg1[i], &cdef_arg2[i]);
> + }
> + }
> + for (i = 0; i < 2; i++)
> + /* Check for one shift count being Y and the other B - Y,
> + with optional casts. */
> + if (cdef_code[i] == MINUS_EXPR
> + && host_integerp (cdef_arg1[i], 0)
> + && tree_low_cst (cdef_arg1[i], 0) == TYPE_PRECISION (rtype)
> + && TREE_CODE (cdef_arg2[i]) == SSA_NAME)
> + {
> + tree tem;
> + enum tree_code code;
> +
> + if (cdef_arg2[i] == def_arg2[1 - i]
> + || cdef_arg2[i] == def_arg2_alt[1 - i])
> + {
> + rotcnt = cdef_arg2[i];
> + break;
> + }
> + defcodefor_name (cdef_arg2[i], &code, &tem, NULL);
> + if (CONVERT_EXPR_CODE_P (code)
> + && INTEGRAL_TYPE_P (TREE_TYPE (tem))
> + && TYPE_PRECISION (TREE_TYPE (tem))
> + > floor_log2 (TYPE_PRECISION (rtype))
> + && TYPE_PRECISION (TREE_TYPE (tem))
> + == GET_MODE_PRECISION (TYPE_MODE (TREE_TYPE (tem)))
> + && (tem == def_arg2[1 - i]
> + || tem == def_arg2_alt[1 - i]))
> + {
> + rotcnt = tem;
> + break;
> + }
> + }
> + /* The above sequence isn't safe for Y being 0,
> + because then one of the shifts triggers undefined behavior.
> + This alternative is safe even for rotation count of 0.
> + One shift count is Y and the other (-Y) & (B - 1). */
> + else if (cdef_code[i] == BIT_AND_EXPR
> + && host_integerp (cdef_arg2[i], 0)
> + && tree_low_cst (cdef_arg2[i], 0)
> + == TYPE_PRECISION (rtype) - 1
> + && TREE_CODE (cdef_arg1[i]) == SSA_NAME)
> + {
> + tree tem;
> + enum tree_code code;
> +
> + defcodefor_name (cdef_arg1[i], &code, &tem, NULL);
> + if (CONVERT_EXPR_CODE_P (code)
> + && INTEGRAL_TYPE_P (TREE_TYPE (tem))
> + && TYPE_PRECISION (TREE_TYPE (tem))
> + > floor_log2 (TYPE_PRECISION (rtype))
> + && TYPE_PRECISION (TREE_TYPE (tem))
> + == GET_MODE_PRECISION (TYPE_MODE (TREE_TYPE (tem))))
> + defcodefor_name (tem, &code, &tem, NULL);
> +
> + if (code == NEGATE_EXPR)
> + {
> + if (tem == def_arg2[1 - i] || tem == def_arg2_alt[1 - i])
> + {
> + rotcnt = tem;
> + break;
> + }
> + defcodefor_name (tem, &code, &tem, NULL);
> + if (CONVERT_EXPR_CODE_P (code)
> + && INTEGRAL_TYPE_P (TREE_TYPE (tem))
> + && TYPE_PRECISION (TREE_TYPE (tem))
> + > floor_log2 (TYPE_PRECISION (rtype))
> + && TYPE_PRECISION (TREE_TYPE (tem))
> + == GET_MODE_PRECISION (TYPE_MODE (TREE_TYPE (tem)))
> + && (tem == def_arg2[1 - i]
> + || tem == def_arg2_alt[1 - i]))
> + {
> + rotcnt = tem;
> + break;
> + }
> + }
> + }
> + if (rotcnt == NULL_TREE)
> + return false;
> + swapped_p = i != 1;
> + }
> +
> + if (!useless_type_conversion_p (TREE_TYPE (def_arg2[0]),
> + TREE_TYPE (rotcnt)))
> + {
> + g = gimple_build_assign_with_ops (NOP_EXPR,
> + make_ssa_name (TREE_TYPE (def_arg2[0]),
> + NULL),
> + rotcnt, NULL_TREE);
> + gsi_insert_before (gsi, g, GSI_SAME_STMT);
> + rotcnt = gimple_assign_lhs (g);
> + }
> + lhs = gimple_assign_lhs (stmt);
> + if (!useless_type_conversion_p (rtype, TREE_TYPE (def_arg1[0])))
> + lhs = make_ssa_name (TREE_TYPE (def_arg1[0]), NULL);
> + g = gimple_build_assign_with_ops (((def_code[0] == LSHIFT_EXPR) ^
> swapped_p)
> + ? LROTATE_EXPR : RROTATE_EXPR,
> + lhs, def_arg1[0], rotcnt);
> + if (!useless_type_conversion_p (rtype, TREE_TYPE (def_arg1[0])))
> + {
> + gsi_insert_before (gsi, g, GSI_SAME_STMT);
> + g = gimple_build_assign_with_ops (NOP_EXPR, gimple_assign_lhs (stmt),
> + lhs, NULL_TREE);
> + }
> + gsi_replace (gsi, g, false);
> + return true;
> +}
> +
> /* Perform re-associations of the plus or minus statement STMT that are
> always permitted. Returns true if the CFG was changed. */
>
> @@ -3114,6 +3350,11 @@ ssa_forward_propagate_and_combine (void)
> cfg_changed = true;
> changed = did_something != 0;
> }
> + else if ((code == PLUS_EXPR
> + || code == BIT_IOR_EXPR
> + || code == BIT_XOR_EXPR)
> + && simplify_rotate (&gsi))
> + changed = true;
> else if (code == BIT_AND_EXPR
> || code == BIT_IOR_EXPR
> || code == BIT_XOR_EXPR)
> --- gcc/testsuite/c-c++-common/rotate-1.c.jj 2013-05-09 14:56:53.653727175
> +0200
> +++ gcc/testsuite/c-c++-common/rotate-1.c 2013-05-09 15:16:02.768309163
> +0200
> @@ -0,0 +1,389 @@
> +/* Check rotate pattern detection. */
> +/* { dg-do compile } */
> +/* { dg-options "-O2 -fdump-tree-optimized" } */
> +/* { dg-final { scan-tree-dump-times "r\[<>]\[<>]" 64 "optimized" } } */
> +/* { dg-final { cleanup-tree-dump "optimized" } } */
> +
> +unsigned int
> +f1 (unsigned int x, unsigned int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - y));
> +}
> +
> +unsigned int
> +f2 (unsigned int x, unsigned long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - y));
> +}
> +
> +unsigned int
> +f3 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) | (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - 1));
> +}
> +
> +unsigned int
> +f4 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_INT__ - 1)) | (x >> 1);
> +}
> +
> +unsigned short int
> +f5 (unsigned short int x, unsigned int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * __SIZEOF_SHORT__ - y));
> +}
> +
> +unsigned short int
> +f6 (unsigned short int x, unsigned long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * __SIZEOF_SHORT__ - y));
> +}
> +
> +unsigned char
> +f7 (unsigned char x, unsigned int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ - y));
> +}
> +
> +unsigned char
> +f8 (unsigned char x, unsigned long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ - y));
> +}
> +
> +unsigned int
> +f9 (unsigned int x, unsigned int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned int) - y));
> +}
> +
> +unsigned int
> +f10 (unsigned int x, unsigned long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned int) - y));
> +}
> +
> +unsigned int
> +f11 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) | (x >> (__CHAR_BIT__ * sizeof (unsigned int) - 1));
> +}
> +
> +unsigned int
> +f12 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned int) - 1)) | (x >> 1);
> +}
> +
> +unsigned short int
> +f13 (unsigned short int x, unsigned int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned short) - y));
> +}
> +
> +unsigned short int
> +f14 (unsigned short int x, unsigned long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned short) - y));
> +}
> +
> +unsigned char
> +f15 (unsigned char x, unsigned int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned char) - y));
> +}
> +
> +unsigned char
> +f16 (unsigned char x, unsigned long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned char) - y));
> +}
> +
> +unsigned int
> +f17 (unsigned int x, unsigned int y)
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f18 (unsigned int x, unsigned long int y)
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f19 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - 1)) ^ (x << 1);
> +}
> +
> +unsigned int
> +f20 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) ^ (x << (__CHAR_BIT__ * __SIZEOF_INT__ - 1));
> +}
> +
> +unsigned short int
> +f21 (unsigned short int x, unsigned int y)
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_SHORT__ - y)) ^ (x << y);
> +}
> +
> +unsigned short int
> +f22 (unsigned short int x, unsigned long int y)
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_SHORT__ - y)) ^ (x << y);
> +}
> +
> +unsigned char
> +f23 (unsigned char x, unsigned int y)
> +{
> + return (x >> (__CHAR_BIT__ - y)) ^ (x << y);
> +}
> +
> +unsigned char
> +f24 (unsigned char x, unsigned long int y)
> +{
> + return (x >> (__CHAR_BIT__ - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f25 (unsigned int x, unsigned int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned int) - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f26 (unsigned int x, unsigned long int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned int) - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f27 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned int) - 1)) ^ (x << 1);
> +}
> +
> +unsigned int
> +f28 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) ^ (x << (__CHAR_BIT__ * sizeof (unsigned int) - 1));
> +}
> +
> +unsigned short int
> +f29 (unsigned short int x, unsigned int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned short) - y)) ^ (x << y);
> +}
> +
> +unsigned short int
> +f30 (unsigned short int x, unsigned long int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned short) - y)) ^ (x << y);
> +}
> +
> +unsigned char
> +f31 (unsigned char x, unsigned int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned char) - y)) ^ (x << y);
> +}
> +
> +unsigned char
> +f32 (unsigned char x, unsigned long int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned char) - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f33 (unsigned int x, unsigned int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * __SIZEOF_INT__ - y));
> +}
> +
> +unsigned int
> +f34 (unsigned int x, unsigned long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * __SIZEOF_INT__ - y));
> +}
> +
> +unsigned int
> +f35 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) | (x << (__CHAR_BIT__ * __SIZEOF_INT__ - 1));
> +}
> +
> +unsigned int
> +f36 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - 1)) | (x << 1);
> +}
> +
> +unsigned short int
> +f37 (unsigned short int x, unsigned int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * __SIZEOF_SHORT__ - y));
> +}
> +
> +unsigned short int
> +f38 (unsigned short int x, unsigned long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * __SIZEOF_SHORT__ - y));
> +}
> +
> +unsigned char
> +f39 (unsigned char x, unsigned int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ - y));
> +}
> +
> +unsigned char
> +f40 (unsigned char x, unsigned long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ - y));
> +}
> +
> +unsigned int
> +f41 (unsigned int x, unsigned int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned int) - y));
> +}
> +
> +unsigned int
> +f42 (unsigned int x, unsigned long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned int) - y));
> +}
> +
> +unsigned int
> +f43 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) | (x << (__CHAR_BIT__ * sizeof (unsigned int) - 1));
> +}
> +
> +unsigned int
> +f44 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned int) - 1)) | (x << 1);
> +}
> +
> +unsigned short int
> +f45 (unsigned short int x, unsigned int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned short) - y));
> +}
> +
> +unsigned short int
> +f46 (unsigned short int x, unsigned long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned short) - y));
> +}
> +
> +unsigned char
> +f47 (unsigned char x, unsigned int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned char) - y));
> +}
> +
> +unsigned char
> +f48 (unsigned char x, unsigned long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned char) - y));
> +}
> +
> +unsigned int
> +f49 (unsigned int x, unsigned int y)
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_INT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f50 (unsigned int x, unsigned long int y)
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_INT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f51 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_INT__ - 1)) ^ (x >> 1);
> +}
> +
> +unsigned int
> +f52 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) ^ (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - 1));
> +}
> +
> +unsigned short int
> +f53 (unsigned short int x, unsigned int y)
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_SHORT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned short int
> +f54 (unsigned short int x, unsigned long int y)
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_SHORT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned char
> +f55 (unsigned char x, unsigned int y)
> +{
> + return (x << (__CHAR_BIT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned char
> +f56 (unsigned char x, unsigned long int y)
> +{
> + return (x << (__CHAR_BIT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f57 (unsigned int x, unsigned int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned int) - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f58 (unsigned int x, unsigned long int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned int) - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f59 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned int) - 1)) ^ (x >> 1);
> +}
> +
> +unsigned int
> +f60 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) ^ (x >> (__CHAR_BIT__ * sizeof (unsigned int) - 1));
> +}
> +
> +unsigned short int
> +f61 (unsigned short int x, unsigned int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned short) - y)) ^ (x >> y);
> +}
> +
> +unsigned short int
> +f62 (unsigned short int x, unsigned long int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned short) - y)) ^ (x >> y);
> +}
> +
> +unsigned char
> +f63 (unsigned char x, unsigned int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned char) - y)) ^ (x >> y);
> +}
> +
> +unsigned char
> +f64 (unsigned char x, unsigned long int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned char) - y)) ^ (x >> y);
> +}
> --- gcc/testsuite/c-c++-common/rotate-1a.c.jj 2013-05-09 15:19:28.179164195
> +0200
> +++ gcc/testsuite/c-c++-common/rotate-1a.c 2013-05-09 15:24:56.786327208
> +0200
> @@ -0,0 +1,44 @@
> +/* { dg-do run } */
> +/* { dg-options "-O2 -Wno-overflow" } */
> +
> +extern
> +#ifdef __cplusplus
> +"C"
> +#endif
> +void abort (void);
> +
> +#ifndef ROTATE_N
> +#define ROTATE_N "rotate-1.c"
> +#endif
> +
> +#include ROTATE_N
> +
> +unsigned int expected[] = {
> +0x91a2b3c0, 0x91a2b3c0, 0x2468acf0, 0x91a2b3c, 0xb3c2, 0xb3c2, 0xc3, 0xc3,
> +0x91a2b3c0, 0x91a2b3c0, 0x2468acf0, 0x91a2b3c, 0xb3c2, 0xb3c2, 0xc3, 0xc3,
> +0x91a2b3c0, 0x91a2b3c0, 0x2468acf0, 0x91a2b3c, 0xb3c2, 0xb3c2, 0xc3, 0xc3,
> +0x91a2b3c0, 0x91a2b3c0, 0x2468acf0, 0x91a2b3c, 0xb3c2, 0xb3c2, 0xc3, 0xc3,
> +0x2468acf, 0x2468acf, 0x91a2b3c, 0x2468acf0, 0xacf, 0xacf, 0xf, 0xf,
> +0x2468acf, 0x2468acf, 0x91a2b3c, 0x2468acf0, 0xacf, 0xacf, 0xf, 0xf,
> +0x2468acf, 0x2468acf, 0x91a2b3c, 0x2468acf0, 0xacf, 0xacf, 0xf, 0xf,
> +0x2468acf, 0x2468acf, 0x91a2b3c, 0x2468acf0, 0xacf, 0xacf, 0xf, 0xf };
> +
> +#define F(n) __typeof (f##n) f##n __attribute__((noinline, noclone));
> +#define D(n) F(n##0) F(n##1) F(n##2) F(n##3) F(n##4) F(n##5) F(n##6) F(n##7)
> F(n##8) F(n##9)
> +#define ALL \
> +F(1) F(2) F(3) F(4) F(5) F(6) F(7) F(8) F(9) \
> +D(1) D(2) D(3) D(4) D(5) F(60) F(61) F(62) F(63) F(64)
> +ALL
> +
> +int
> +main ()
> +{
> +#if __CHAR_BIT__ != 8 || __SIZEOF_SHORT__ != 2 || __SIZEOF_INT__ != 4
> + return 0;
> +#else
> +#undef F
> +#define F(n) if ((unsigned int) f##n (0x12345678U, 3) != expected[n - 1])
> abort ();
> + ALL
> + return 0;
> +#endif
> +}
> --- gcc/testsuite/c-c++-common/rotate-2.c.jj 2013-05-09 14:56:56.929709134
> +0200
> +++ gcc/testsuite/c-c++-common/rotate-2.c 2013-05-09 15:16:10.429264887
> +0200
> @@ -0,0 +1,389 @@
> +/* Check rotate pattern detection. */
> +/* { dg-do compile } */
> +/* { dg-options "-O2 -fdump-tree-optimized" } */
> +/* { dg-final { scan-tree-dump-times "r\[<>]\[<>]" 64 "optimized" } } */
> +/* { dg-final { cleanup-tree-dump "optimized" } } */
> +
> +unsigned int
> +f1 (unsigned int x, unsigned int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f2 (unsigned int x, unsigned long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f3 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) | (x >> ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f4 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) | (x >> 1);
> +}
> +
> +unsigned short int
> +f5 (unsigned short int x, unsigned int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1)));
> +}
> +
> +unsigned short int
> +f6 (unsigned short int x, unsigned long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1)));
> +}
> +
> +unsigned char
> +f7 (unsigned char x, unsigned int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ - 1)));
> +}
> +
> +unsigned char
> +f8 (unsigned char x, unsigned long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ - 1)));
> +}
> +
> +unsigned int
> +f9 (unsigned int x, unsigned int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f10 (unsigned int x, unsigned long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f11 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) | (x >> ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f12 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) | (x >>
> 1);
> +}
> +
> +unsigned short int
> +f13 (unsigned short int x, unsigned int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) -
> 1)));
> +}
> +
> +unsigned short int
> +f14 (unsigned short int x, unsigned long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) -
> 1)));
> +}
> +
> +unsigned char
> +f15 (unsigned char x, unsigned int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) -
> 1)));
> +}
> +
> +unsigned char
> +f16 (unsigned char x, unsigned long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) -
> 1)));
> +}
> +
> +unsigned int
> +f17 (unsigned int x, unsigned int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned int
> +f18 (unsigned int x, unsigned long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned int
> +f19 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x << 1);
> +}
> +
> +unsigned int
> +f20 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) ^ (x << ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned short int
> +f21 (unsigned short int x, unsigned int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned short int
> +f22 (unsigned short int x, unsigned long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned char
> +f23 (unsigned char x, unsigned int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned char
> +f24 (unsigned char x, unsigned long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned int
> +f25 (unsigned int x, unsigned int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x <<
> y);
> +}
> +
> +unsigned int
> +f26 (unsigned int x, unsigned long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x <<
> y);
> +}
> +
> +unsigned int
> +f27 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x <<
> 1);
> +}
> +
> +unsigned int
> +f28 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) ^ (x << ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned short int
> +f29 (unsigned short int x, unsigned int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) - 1))) ^ (x
> << y);
> +}
> +
> +unsigned short int
> +f30 (unsigned short int x, unsigned long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) - 1))) ^ (x
> << y);
> +}
> +
> +unsigned char
> +f31 (unsigned char x, unsigned int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) - 1))) ^ (x <<
> y);
> +}
> +
> +unsigned char
> +f32 (unsigned char x, unsigned long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) - 1))) ^ (x <<
> y);
> +}
> +
> +unsigned int
> +f33 (unsigned int x, unsigned int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f34 (unsigned int x, unsigned long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f35 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) | (x << ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f36 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) | (x << 1);
> +}
> +
> +unsigned short int
> +f37 (unsigned short int x, unsigned int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1)));
> +}
> +
> +unsigned short int
> +f38 (unsigned short int x, unsigned long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1)));
> +}
> +
> +unsigned char
> +f39 (unsigned char x, unsigned int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ - 1)));
> +}
> +
> +unsigned char
> +f40 (unsigned char x, unsigned long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ - 1)));
> +}
> +
> +unsigned int
> +f41 (unsigned int x, unsigned int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f42 (unsigned int x, unsigned long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f43 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) | (x << ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f44 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) | (x <<
> 1);
> +}
> +
> +unsigned short int
> +f45 (unsigned short int x, unsigned int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) -
> 1)));
> +}
> +
> +unsigned short int
> +f46 (unsigned short int x, unsigned long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) -
> 1)));
> +}
> +
> +unsigned char
> +f47 (unsigned char x, unsigned int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) -
> 1)));
> +}
> +
> +unsigned char
> +f48 (unsigned char x, unsigned long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) -
> 1)));
> +}
> +
> +unsigned int
> +f49 (unsigned int x, unsigned int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned int
> +f50 (unsigned int x, unsigned long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned int
> +f51 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x >> 1);
> +}
> +
> +unsigned int
> +f52 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) ^ (x >> ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned short int
> +f53 (unsigned short int x, unsigned int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned short int
> +f54 (unsigned short int x, unsigned long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned char
> +f55 (unsigned char x, unsigned int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned char
> +f56 (unsigned char x, unsigned long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned int
> +f57 (unsigned int x, unsigned int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x >>
> y);
> +}
> +
> +unsigned int
> +f58 (unsigned int x, unsigned long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x >>
> y);
> +}
> +
> +unsigned int
> +f59 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x >>
> 1);
> +}
> +
> +unsigned int
> +f60 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) ^ (x >> ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned short int
> +f61 (unsigned short int x, unsigned int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) - 1))) ^ (x
> >> y);
> +}
> +
> +unsigned short int
> +f62 (unsigned short int x, unsigned long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) - 1))) ^ (x
> >> y);
> +}
> +
> +unsigned char
> +f63 (unsigned char x, unsigned int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) - 1))) ^ (x >>
> y);
> +}
> +
> +unsigned char
> +f64 (unsigned char x, unsigned long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) - 1))) ^ (x >>
> y);
> +}
> --- gcc/testsuite/c-c++-common/rotate-2a.c.jj 2013-05-09 15:19:31.617145493
> +0200
> +++ gcc/testsuite/c-c++-common/rotate-2a.c 2013-05-09 15:23:06.388944450
> +0200
> @@ -0,0 +1,6 @@
> +/* { dg-do run } */
> +/* { dg-options "-O2 -Wno-overflow" } */
> +
> +#define ROTATE_N "rotate-2.c"
> +
> +#include "rotate-1a.c"
> --- gcc/testsuite/c-c++-common/rotate-3.c.jj 2013-05-09 15:01:15.894264414
> +0200
> +++ gcc/testsuite/c-c++-common/rotate-3.c 2013-05-09 15:16:16.994225808
> +0200
> @@ -0,0 +1,389 @@
> +/* Check rotate pattern detection. */
> +/* { dg-do compile } */
> +/* { dg-options "-O2 -fdump-tree-optimized" } */
> +/* { dg-final { scan-tree-dump-times "r\[<>]\[<>]" 64 "optimized" } } */
> +/* { dg-final { cleanup-tree-dump "optimized" } } */
> +
> +unsigned int
> +f1 (unsigned int x, int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - y));
> +}
> +
> +unsigned int
> +f2 (unsigned int x, long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - y));
> +}
> +
> +unsigned int
> +f3 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) | (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - 1));
> +}
> +
> +unsigned int
> +f4 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_INT__ - 1)) | (x >> 1);
> +}
> +
> +unsigned short int
> +f5 (unsigned short int x, int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * __SIZEOF_SHORT__ - y));
> +}
> +
> +unsigned short int
> +f6 (unsigned short int x, long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * __SIZEOF_SHORT__ - y));
> +}
> +
> +unsigned char
> +f7 (unsigned char x, int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ - y));
> +}
> +
> +unsigned char
> +f8 (unsigned char x, long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ - y));
> +}
> +
> +unsigned int
> +f9 (unsigned int x, int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned int) - y));
> +}
> +
> +unsigned int
> +f10 (unsigned int x, long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned int) - y));
> +}
> +
> +unsigned int
> +f11 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) | (x >> (__CHAR_BIT__ * sizeof (unsigned int) - 1));
> +}
> +
> +unsigned int
> +f12 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned int) - 1)) | (x >> 1);
> +}
> +
> +unsigned short int
> +f13 (unsigned short int x, int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned short) - y));
> +}
> +
> +unsigned short int
> +f14 (unsigned short int x, long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned short) - y));
> +}
> +
> +unsigned char
> +f15 (unsigned char x, int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned char) - y));
> +}
> +
> +unsigned char
> +f16 (unsigned char x, long int y)
> +{
> + return (x << y) | (x >> (__CHAR_BIT__ * sizeof (unsigned char) - y));
> +}
> +
> +unsigned int
> +f17 (unsigned int x, int y)
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f18 (unsigned int x, long int y)
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f19 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - 1)) ^ (x << 1);
> +}
> +
> +unsigned int
> +f20 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) ^ (x << (__CHAR_BIT__ * __SIZEOF_INT__ - 1));
> +}
> +
> +unsigned short int
> +f21 (unsigned short int x, int y)
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_SHORT__ - y)) ^ (x << y);
> +}
> +
> +unsigned short int
> +f22 (unsigned short int x, long int y)
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_SHORT__ - y)) ^ (x << y);
> +}
> +
> +unsigned char
> +f23 (unsigned char x, int y)
> +{
> + return (x >> (__CHAR_BIT__ - y)) ^ (x << y);
> +}
> +
> +unsigned char
> +f24 (unsigned char x, long int y)
> +{
> + return (x >> (__CHAR_BIT__ - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f25 (unsigned int x, int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned int) - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f26 (unsigned int x, long int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned int) - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f27 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned int) - 1)) ^ (x << 1);
> +}
> +
> +unsigned int
> +f28 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) ^ (x << (__CHAR_BIT__ * sizeof (unsigned int) - 1));
> +}
> +
> +unsigned short int
> +f29 (unsigned short int x, int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned short) - y)) ^ (x << y);
> +}
> +
> +unsigned short int
> +f30 (unsigned short int x, long int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned short) - y)) ^ (x << y);
> +}
> +
> +unsigned char
> +f31 (unsigned char x, int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned char) - y)) ^ (x << y);
> +}
> +
> +unsigned char
> +f32 (unsigned char x, long int y)
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned char) - y)) ^ (x << y);
> +}
> +
> +unsigned int
> +f33 (unsigned int x, int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * __SIZEOF_INT__ - y));
> +}
> +
> +unsigned int
> +f34 (unsigned int x, long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * __SIZEOF_INT__ - y));
> +}
> +
> +unsigned int
> +f35 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) | (x << (__CHAR_BIT__ * __SIZEOF_INT__ - 1));
> +}
> +
> +unsigned int
> +f36 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - 1)) | (x << 1);
> +}
> +
> +unsigned short int
> +f37 (unsigned short int x, int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * __SIZEOF_SHORT__ - y));
> +}
> +
> +unsigned short int
> +f38 (unsigned short int x, long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * __SIZEOF_SHORT__ - y));
> +}
> +
> +unsigned char
> +f39 (unsigned char x, int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ - y));
> +}
> +
> +unsigned char
> +f40 (unsigned char x, long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ - y));
> +}
> +
> +unsigned int
> +f41 (unsigned int x, int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned int) - y));
> +}
> +
> +unsigned int
> +f42 (unsigned int x, long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned int) - y));
> +}
> +
> +unsigned int
> +f43 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) | (x << (__CHAR_BIT__ * sizeof (unsigned int) - 1));
> +}
> +
> +unsigned int
> +f44 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> (__CHAR_BIT__ * sizeof (unsigned int) - 1)) | (x << 1);
> +}
> +
> +unsigned short int
> +f45 (unsigned short int x, int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned short) - y));
> +}
> +
> +unsigned short int
> +f46 (unsigned short int x, long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned short) - y));
> +}
> +
> +unsigned char
> +f47 (unsigned char x, int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned char) - y));
> +}
> +
> +unsigned char
> +f48 (unsigned char x, long int y)
> +{
> + return (x >> y) | (x << (__CHAR_BIT__ * sizeof (unsigned char) - y));
> +}
> +
> +unsigned int
> +f49 (unsigned int x, int y)
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_INT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f50 (unsigned int x, long int y)
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_INT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f51 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_INT__ - 1)) ^ (x >> 1);
> +}
> +
> +unsigned int
> +f52 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) ^ (x >> (__CHAR_BIT__ * __SIZEOF_INT__ - 1));
> +}
> +
> +unsigned short int
> +f53 (unsigned short int x, int y)
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_SHORT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned short int
> +f54 (unsigned short int x, long int y)
> +{
> + return (x << (__CHAR_BIT__ * __SIZEOF_SHORT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned char
> +f55 (unsigned char x, int y)
> +{
> + return (x << (__CHAR_BIT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned char
> +f56 (unsigned char x, long int y)
> +{
> + return (x << (__CHAR_BIT__ - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f57 (unsigned int x, int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned int) - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f58 (unsigned int x, long int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned int) - y)) ^ (x >> y);
> +}
> +
> +unsigned int
> +f59 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned int) - 1)) ^ (x >> 1);
> +}
> +
> +unsigned int
> +f60 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) ^ (x >> (__CHAR_BIT__ * sizeof (unsigned int) - 1));
> +}
> +
> +unsigned short int
> +f61 (unsigned short int x, int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned short) - y)) ^ (x >> y);
> +}
> +
> +unsigned short int
> +f62 (unsigned short int x, long int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned short) - y)) ^ (x >> y);
> +}
> +
> +unsigned char
> +f63 (unsigned char x, int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned char) - y)) ^ (x >> y);
> +}
> +
> +unsigned char
> +f64 (unsigned char x, long int y)
> +{
> + return (x << (__CHAR_BIT__ * sizeof (unsigned char) - y)) ^ (x >> y);
> +}
> --- gcc/testsuite/c-c++-common/rotate-3a.c.jj 2013-05-09 15:23:20.079868427
> +0200
> +++ gcc/testsuite/c-c++-common/rotate-3a.c 2013-05-09 15:23:31.910802207
> +0200
> @@ -0,0 +1,6 @@
> +/* { dg-do run } */
> +/* { dg-options "-O2 -Wno-overflow" } */
> +
> +#define ROTATE_N "rotate-4.c"
> +
> +#include "rotate-1a.c"
> --- gcc/testsuite/c-c++-common/rotate-4.c.jj 2013-05-09 15:01:40.210126009
> +0200
> +++ gcc/testsuite/c-c++-common/rotate-4.c 2013-05-09 15:16:24.026187297
> +0200
> @@ -0,0 +1,389 @@
> +/* Check rotate pattern detection. */
> +/* { dg-do compile } */
> +/* { dg-options "-O2 -fdump-tree-optimized" } */
> +/* { dg-final { scan-tree-dump-times "r\[<>]\[<>]" 64 "optimized" } } */
> +/* { dg-final { cleanup-tree-dump "optimized" } } */
> +
> +unsigned int
> +f1 (unsigned int x, int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f2 (unsigned int x, long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f3 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) | (x >> ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f4 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) | (x >> 1);
> +}
> +
> +unsigned short int
> +f5 (unsigned short int x, int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1)));
> +}
> +
> +unsigned short int
> +f6 (unsigned short int x, long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1)));
> +}
> +
> +unsigned char
> +f7 (unsigned char x, int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ - 1)));
> +}
> +
> +unsigned char
> +f8 (unsigned char x, long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ - 1)));
> +}
> +
> +unsigned int
> +f9 (unsigned int x, int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f10 (unsigned int x, long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f11 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) | (x >> ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f12 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) | (x >>
> 1);
> +}
> +
> +unsigned short int
> +f13 (unsigned short int x, int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) -
> 1)));
> +}
> +
> +unsigned short int
> +f14 (unsigned short int x, long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) -
> 1)));
> +}
> +
> +unsigned char
> +f15 (unsigned char x, int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) -
> 1)));
> +}
> +
> +unsigned char
> +f16 (unsigned char x, long int y)
> +{
> + return (x << y) | (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) -
> 1)));
> +}
> +
> +unsigned int
> +f17 (unsigned int x, int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned int
> +f18 (unsigned int x, long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned int
> +f19 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x << 1);
> +}
> +
> +unsigned int
> +f20 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) ^ (x << ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned short int
> +f21 (unsigned short int x, int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned short int
> +f22 (unsigned short int x, long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned char
> +f23 (unsigned char x, int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned char
> +f24 (unsigned char x, long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ - 1))) ^ (x << y);
> +}
> +
> +unsigned int
> +f25 (unsigned int x, int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x <<
> y);
> +}
> +
> +unsigned int
> +f26 (unsigned int x, long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x <<
> y);
> +}
> +
> +unsigned int
> +f27 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x <<
> 1);
> +}
> +
> +unsigned int
> +f28 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) ^ (x << ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned short int
> +f29 (unsigned short int x, int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) - 1))) ^ (x
> << y);
> +}
> +
> +unsigned short int
> +f30 (unsigned short int x, long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) - 1))) ^ (x
> << y);
> +}
> +
> +unsigned char
> +f31 (unsigned char x, int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) - 1))) ^ (x <<
> y);
> +}
> +
> +unsigned char
> +f32 (unsigned char x, long int y)
> +{
> + return (x >> ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) - 1))) ^ (x <<
> y);
> +}
> +
> +unsigned int
> +f33 (unsigned int x, int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f34 (unsigned int x, long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f35 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) | (x << ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned int
> +f36 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) | (x << 1);
> +}
> +
> +unsigned short int
> +f37 (unsigned short int x, int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1)));
> +}
> +
> +unsigned short int
> +f38 (unsigned short int x, long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1)));
> +}
> +
> +unsigned char
> +f39 (unsigned char x, int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ - 1)));
> +}
> +
> +unsigned char
> +f40 (unsigned char x, long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ - 1)));
> +}
> +
> +unsigned int
> +f41 (unsigned int x, int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f42 (unsigned int x, long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f43 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> 1) | (x << ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned int
> +f44 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x >> ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) | (x <<
> 1);
> +}
> +
> +unsigned short int
> +f45 (unsigned short int x, int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) -
> 1)));
> +}
> +
> +unsigned short int
> +f46 (unsigned short int x, long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) -
> 1)));
> +}
> +
> +unsigned char
> +f47 (unsigned char x, int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) -
> 1)));
> +}
> +
> +unsigned char
> +f48 (unsigned char x, long int y)
> +{
> + return (x >> y) | (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) -
> 1)));
> +}
> +
> +unsigned int
> +f49 (unsigned int x, int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned int
> +f50 (unsigned int x, long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned int
> +f51 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1))) ^ (x >> 1);
> +}
> +
> +unsigned int
> +f52 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) ^ (x >> ((-1) & (__CHAR_BIT__ * __SIZEOF_INT__ - 1)));
> +}
> +
> +unsigned short int
> +f53 (unsigned short int x, int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned short int
> +f54 (unsigned short int x, long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * __SIZEOF_SHORT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned char
> +f55 (unsigned char x, int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned char
> +f56 (unsigned char x, long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ - 1))) ^ (x >> y);
> +}
> +
> +unsigned int
> +f57 (unsigned int x, int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x >>
> y);
> +}
> +
> +unsigned int
> +f58 (unsigned int x, long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x >>
> y);
> +}
> +
> +unsigned int
> +f59 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) - 1))) ^ (x >>
> 1);
> +}
> +
> +unsigned int
> +f60 (unsigned int x, int y __attribute__((unused)))
> +{
> + return (x << 1) ^ (x >> ((-1) & (__CHAR_BIT__ * sizeof (unsigned int) -
> 1)));
> +}
> +
> +unsigned short int
> +f61 (unsigned short int x, int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) - 1))) ^ (x
> >> y);
> +}
> +
> +unsigned short int
> +f62 (unsigned short int x, long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned short) - 1))) ^ (x
> >> y);
> +}
> +
> +unsigned char
> +f63 (unsigned char x, int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) - 1))) ^ (x >>
> y);
> +}
> +
> +unsigned char
> +f64 (unsigned char x, long int y)
> +{
> + return (x << ((-y) & (__CHAR_BIT__ * sizeof (unsigned char) - 1))) ^ (x >>
> y);
> +}
> --- gcc/testsuite/c-c++-common/rotate-4a.c.jj 2013-05-09 15:23:20.079868427
> +0200
> +++ gcc/testsuite/c-c++-common/rotate-4a.c 2013-05-09 15:23:24.775841083
> +0200
> @@ -0,0 +1,6 @@
> +/* { dg-do run } */
> +/* { dg-options "-O2 -Wno-overflow" } */
> +
> +#define ROTATE_N "rotate-4.c"
> +
> +#include "rotate-1a.c"
> --- gcc/testsuite/gcc.target/i386/rotate-1.c.jj 2008-09-05
> 12:54:23.000000000 +0200
> +++ gcc/testsuite/gcc.target/i386/rotate-1.c 2013-05-09 20:32:42.038756873
> +0200
> @@ -13,4 +13,4 @@ main (void)
> return c;
> }
>
> -/* { dg-final { scan-assembler "rolb" } } */
> +/* { dg-final { scan-assembler "ro\[lr]b" } } */
>
> Jakub
>
>
--
Richard Biener <rguent...@suse.de>
SUSE / SUSE Labs
SUSE LINUX Products GmbH - Nuernberg - AG Nuernberg - HRB 16746
GF: Jeff Hawn, Jennifer Guild, Felix Imend
