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| author | Sebastian Pop <sebastian.pop@amd.com> | 2010-12-15 05:04:50 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@gcc.gnu.org> | 2010-12-15 05:04:50 +0000 |
| commit | 05575a4695b01941551f84e718997f6803c82dbc (patch) | |
| tree | 97b92d4d577f23044cf2b84c8a604efb5dab883e /gcc | |
| parent | 3e6f8b560669aa350629504f80388cc773719f13 (diff) | |
| download | gcc-05575a4695b01941551f84e718997f6803c82dbc.zip gcc-05575a4695b01941551f84e718997f6803c82dbc.tar.gz gcc-05575a4695b01941551f84e718997f6803c82dbc.tar.bz2 | |
Fix PR46845: handle scop parameters before scev analysis.
2010-12-14 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/46845
* sese.c (scalar_evolution_in_region): Handle scop parameters
before scev analysis.
* gcc.dg/graphite/id-pr46845.c: New.
From-SVN: r167844
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/sese.c | 8 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/graphite/id-pr46845.c | 17 |
4 files changed, 33 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 66c11c4..549b290 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2010-12-14 Sebastian Pop <sebastian.pop@amd.com> + PR tree-optimization/46845 + * sese.c (scalar_evolution_in_region): Handle scop parameters + before scev analysis. + +2010-12-14 Sebastian Pop <sebastian.pop@amd.com> + PR tree-optimization/46928 * tree-data-ref.c (analyze_overlapping_iterations): Handle "A[p] == A[p]" in data dependence analysis with p a parameter of the loop. @@ -801,14 +801,16 @@ scalar_evolution_in_region (sese region, loop_p loop, tree t) struct loop *def_loop; basic_block before = block_before_sese (region); + /* SCOP parameters. */ + if (TREE_CODE (t) == SSA_NAME + && !defined_in_sese_p (t, region)) + return t; + if (TREE_CODE (t) != SSA_NAME || loop_in_sese_p (loop, region)) return instantiate_scev (before, loop, analyze_scalar_evolution (loop, t)); - if (!defined_in_sese_p (t, region)) - return t; - def = SSA_NAME_DEF_STMT (t); def_loop = loop_containing_stmt (def); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index fae339b..ce47905 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2010-12-14 Sebastian Pop <sebastian.pop@amd.com> + PR tree-optimization/46845 + * gcc.dg/graphite/id-pr46845.c: New. + +2010-12-14 Sebastian Pop <sebastian.pop@amd.com> + PR tree-optimization/46928 * gcc.dg/tree-ssa/ldist-17.c: New. diff --git a/gcc/testsuite/gcc.dg/graphite/id-pr46845.c b/gcc/testsuite/gcc.dg/graphite/id-pr46845.c new file mode 100644 index 0000000..f4da78e --- /dev/null +++ b/gcc/testsuite/gcc.dg/graphite/id-pr46845.c @@ -0,0 +1,17 @@ +/* { dg-options "-O2 -ffast-math -fgraphite-identity -w -Wno-psabi" { target { i?86-*-* x86_64-*-* } } } */ + +typedef float V2SF __attribute__ ((vector_size (128))); + +V2SF +foo (int x, V2SF a) +{ + V2SF b; + if (x & 42) + b = a; + else + b = a + (V2SF) {1.0f/0.0f - 1.0f/0.0f, 1.0f/0.0f - 1.0f/0.0f}; + while (x--) + a += b; + + return a; +} |