Hi Richard,
I find that you missed the testcase with when committing the patch.
GCC 4.8 & 4.9 branch also has the same issue, may be we need to
fix for them too?
Cheers,
Felix
On Mon, Aug 11, 2014 at 7:24 PM, Richard Biener
<richard.guent...@gmail.com> wrote:
> On Sat, Aug 9, 2014 at 6:28 AM, Felix Yang <fei.yang0...@gmail.com> wrote:
>> Attached please find the patch and testcase for PR62037.
>>
>> DEF1 can be a GIMPLE_NOP and gimple_bb will be NULL then. The patch
>> checks for that.
>> Bootstrapped on x86_64-suse-linux. OK for trunk? Please commit this
>> patch if it's OK.
>>
>
> Thanks - applied.
>
> Richard.
>
>> Index: gcc/ChangeLog
>> ===================================================================
>> --- gcc/ChangeLog (revision 213772)
>> +++ gcc/ChangeLog (working copy)
>> @@ -1,3 +1,9 @@
>> +2014-08-09 Felix Yang <fei.yang0...@gmail.com>
>> +
>> + PR tree-optimization/62073
>> + * tree-vect-loop.c (vect_is_simple_reduction_1): Check that DEF1 has
>> + a basic block.
>> +
>> 2014-08-08 Guozhi Wei <car...@google.com>
>>
>> * config/rs6000/rs6000.md (*movdi_internal64): Add a new constraint.
>> Index: gcc/testsuite/gcc.dg/vect/pr62073.c
>> ===================================================================
>> --- gcc/testsuite/gcc.dg/vect/pr62073.c (revision 0)
>> +++ gcc/testsuite/gcc.dg/vect/pr62073.c (revision 0)
>> @@ -0,0 +1,41 @@
>> +/* { dg-do compile } */
>> +/* { dg-options "-O1 -ftree-vectorize" } */
>> +
>> +struct S0
>> +{
>> + int f7;
>> +};
>> +struct S0 g_50;
>> +int g_70;
>> +int g_76;
>> +
>> +
>> +int foo (long long p_56, int * p_57)
>> +{
>> + int *l_77;
>> + int l_101;
>> +
>> + for (; g_70;)
>> + {
>> + int **l_78 = &l_77;
>> + if (g_50.f7)
>> + continue;
>> + *l_78 = 0;
>> + }
>> + for (g_76 = 1; g_76 >= 0; g_76--)
>> + {
>> + int *l_90;
>> + for (l_101 = 4; l_101 >= 0; l_101--)
>> + if (l_101)
>> + *l_90 = 0;
>> + else
>> + {
>> + int **l_113 = &l_77;
>> + *l_113 = p_57;
>> + }
>> + }
>> +
>> + return *l_77;
>> +}
>> +
>> +/* { dg-final { cleanup-tree-dump "vect" } } */
>> Index: gcc/testsuite/ChangeLog
>> ===================================================================
>> --- gcc/testsuite/ChangeLog (revision 213772)
>> +++ gcc/testsuite/ChangeLog (working copy)
>> @@ -1,3 +1,8 @@
>> +2014-08-09 Felix Yang <fei.yang0...@gmail.com>
>> +
>> + PR tree-optimization/62073
>> + * gcc.dg/vect/pr62073.c: New test.
>> +
>> 2014-08-08 Richard Biener <rguent...@suse.de>
>>
>> * gcc.dg/strlenopt-8.c: Remove XFAIL.
>> Index: gcc/tree-vect-loop.c
>> ===================================================================
>> --- gcc/tree-vect-loop.c (revision 213772)
>> +++ gcc/tree-vect-loop.c (working copy)
>> @@ -2321,7 +2321,8 @@ vect_is_simple_reduction_1 (loop_vec_info loop_inf
>> }
>>
>> def1 = SSA_NAME_DEF_STMT (op1);
>> - if (flow_bb_inside_loop_p (loop, gimple_bb (def_stmt))
>> + if (gimple_bb (def1)
>> + && flow_bb_inside_loop_p (loop, gimple_bb (def_stmt))
>> && loop->inner
>> && flow_bb_inside_loop_p (loop->inner, gimple_bb (def1))
>> && is_gimple_assign (def1))
>>
>>
>> Cheers,
>> Felix
