Hello,
This patches set the correct operand mode for tstsi_t_zero_extract_eq,
to avoid reload generating a move between a constant and a void register.
Reg tested for sh-elf. No performance impact
OK for 4.7, 4.8 and trunk ?
Thanks
2013-04-26 Christian Bruel <christian.br...@st.com>
PR target/57108
* sh.md (tstsi_t_zero_extract_eq): Set mode for operand 0.
2013-04-26 Christian Bruel <christian.br...@st.com>
PR target/57108
* gcc.target/sh/pr57108.c: New test.
Index: gcc/testsuite/gcc.target/sh/pr57108.c
===================================================================
--- gcc/testsuite/gcc.target/sh/pr57108.c (revision 0)
+++ gcc/testsuite/gcc.target/sh/pr57108.c (revision 0)
@@ -0,0 +1,19 @@
+/* { dg-do compile { target "sh*-*-*" } } */
+/* { dg-options "-O1" } */
+
+void __assert_func (void) __attribute__ ((__noreturn__)) ;
+
+void ATATransfer (int num, int buffer)
+{
+ int wordCount;
+
+ while (num > 0)
+ {
+ wordCount = num * 512 / sizeof (int);
+
+ ((0 == (buffer & 63)) ? (void)0 : __assert_func () );
+ ((0 == (wordCount & 31)) ? (void)0 : __assert_func ());
+ }
+
+
+ }
Index: gcc/config/sh/sh.md
===================================================================
--- gcc/config/sh/sh.md (revision 198287)
+++ gcc/config/sh/sh.md (working copy)
@@ -689,7 +689,7 @@
;; Extract contiguous bits and compare them against zero.
(define_insn "tstsi_t_zero_extract_eq"
[(set (reg:SI T_REG)
- (eq:SI (zero_extract:SI (match_operand 0 "logical_operand" "z")
+ (eq:SI (zero_extract:SI (match_operand:SI 0 "logical_operand" "z")
(match_operand:SI 1 "const_int_operand")
(match_operand:SI 2 "const_int_operand"))
(const_int 0)))]
