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| author | Jakub Jelinek <jakub@redhat.com> | 2015-05-29 15:06:23 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2015-05-29 15:06:23 +0200 |
| commit | 2395a8ea086886c24090f1c9e9dde2515dc2fda8 (patch) | |
| tree | c894b409080257241f8d72971627df9474722fca /gcc | |
| parent | 52fc6859fe39a811a2a5ca81813e27cf1800b9c2 (diff) | |
| download | gcc-2395a8ea086886c24090f1c9e9dde2515dc2fda8.zip gcc-2395a8ea086886c24090f1c9e9dde2515dc2fda8.tar.gz gcc-2395a8ea086886c24090f1c9e9dde2515dc2fda8.tar.bz2 | |
re PR tree-optimization/66142 (Loop is not vectorized because not sufficient support for GOMP_SIMD_LANE)
PR tree-optimization/66142
* tree-if-conv.c (if_convertible_phi_p): Don't give up on
virtual phis that feed themselves.
* gcc.dg/vect/pr66142.c: New test.
From-SVN: r223863
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/vect/pr66142.c | 44 | ||||
| -rw-r--r-- | gcc/tree-if-conv.c | 3 |
4 files changed, 57 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a5941a6..c8b1c44 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-05-29 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/66142 + * tree-if-conv.c (if_convertible_phi_p): Don't give up on + virtual phis that feed themselves. + 2015-05-29 Richard Biener <rguenther@suse.de> PR tree-optimization/66314 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a1485b3..fe9ee3c 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-05-29 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/66142 + * gcc.dg/vect/pr66142.c: New test. + 2015-05-29 Richard Biener <rguenther@suse.de> PR tree-optimization/66314 diff --git a/gcc/testsuite/gcc.dg/vect/pr66142.c b/gcc/testsuite/gcc.dg/vect/pr66142.c new file mode 100644 index 0000000..94854ea --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/pr66142.c @@ -0,0 +1,44 @@ +/* PR middle-end/66142 */ +/* { dg-do compile } */ +/* { dg-additional-options "-ffast-math -fopenmp-simd" } */ +/* { dg-additional-options "-mavx" { target avx_runtime } } */ + +struct A { float x, y; }; +struct B { struct A t, w; }; + +static inline float +bar (const struct B *x) +{ + struct A r; + float b, c, d; + r.x = x->t.x; + r.y = x->t.y; + b = r.x * x->w.x + r.y * x->w.y; + c = b + r.x * r.x + r.y * r.y; + if (c > 0.0f) + return c + 3.0f; + return 0.0f; +} + +void +foo (float *a, float *b, float *c) +{ + int i; + float z = 0.0f; + float u = *a; +#pragma omp simd + for (i = 0; i < 32; i++) + { + float x = b[i]; + float y = c[i]; + struct B r; + r.t.x = 1.0f; + r.t.y = u; + r.w.x = x; + r.w.y = y; + z += bar (&r); + } + *a = z; +} + +/* { dg-final { scan-tree-dump-times "vectorized 1 loops in function" 1 "vect" { target vect_condition } } } */ diff --git a/gcc/tree-if-conv.c b/gcc/tree-if-conv.c index a85c7a2..28e1c47 100644 --- a/gcc/tree-if-conv.c +++ b/gcc/tree-if-conv.c @@ -594,7 +594,8 @@ if_convertible_phi_p (struct loop *loop, basic_block bb, gphi *phi, FOR_EACH_IMM_USE_FAST (use_p, imm_iter, gimple_phi_result (phi)) { - if (gimple_code (USE_STMT (use_p)) == GIMPLE_PHI) + if (gimple_code (USE_STMT (use_p)) == GIMPLE_PHI + && USE_STMT (use_p) != (gimple) phi) { if (dump_file && (dump_flags & TDF_DETAILS)) fprintf (dump_file, "Difficult to handle this virtual phi.\n"); |