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| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-29 13:06:23 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-29 13:06:23 +0000 |
| commit | 2f439a712bac00afe1e40614728f4268245fa577 (patch) | |
| tree | c894b409080257241f8d72971627df9474722fca /gcc/tree-if-conv.c | |
| parent | 874cacba943d78b0dd28caac2b639a7184cd149a (diff) | |
| download | gcc-2f439a712bac00afe1e40614728f4268245fa577.tar.gz | |
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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223863 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-if-conv.c')
| -rw-r--r-- | gcc/tree-if-conv.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/tree-if-conv.c b/gcc/tree-if-conv.c index a85c7a24180..28e1c475c5f 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"); |