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| author | Doug Gilmore <doug.gilmore@imgtec.com> | 2016-10-04 15:28:23 +0000 |
|---|---|---|
| committer | Matthew Fortune <mpf@gcc.gnu.org> | 2016-10-04 15:28:23 +0000 |
| commit | fe8b1e839ca91a61440288049a868944346eef4b (patch) | |
| tree | e158821b60fe355cbe259f1e71d6bbcd67a4e995 /gcc | |
| parent | 9f06db14fae821a5f34196eab15df0e991c8061a (diff) | |
| download | gcc-fe8b1e839ca91a61440288049a868944346eef4b.zip gcc-fe8b1e839ca91a61440288049a868944346eef4b.tar.gz gcc-fe8b1e839ca91a61440288049a868944346eef4b.tar.bz2 | |
re PR tree-optimization/77808 (ICE in duplicate_ssa_name_ptr_info, at tree-ssanames.c:630 starting with r240439)
Fix PR tree-optimization/77808
gcc/
PR tree-optimization/77808
* tree-ssa-loop-prefetch.c (issue_prefetch_ref): Check base_addr
and addr are different before copying points-to information.
gcc/testsuite/
PR tree-optimization/77808
* gcc.dg/tree-ssa/pr77808.c: New testcase.
From-SVN: r240749
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr77808.c | 11 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-prefetch.c | 3 |
4 files changed, 24 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 94c301d..3be8781 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2016-10-04 Doug Gilmore <doug.gilmore@imgtec.com> + + PR tree-optimization/77808 + * tree-ssa-loop-prefetch.c (issue_prefetch_ref): Check base_addr + and addr are different before copying points-to information. + 2016-10-04 Uros Bizjak <ubizjak@gmail.com> * config/i386/x86-tune.def (X86_TUNE_VECTORIZE_DOUBLE): Remove. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index c6b9d87..41c2f38 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-10-04 Doug Gilmore <doug.gilmore@imgtec.com> + + PR tree-optimization/77808 + * gcc.dg/tree-ssa/pr77808.c: New testcase. + 2016-10-04 Richard Biener <rguenther@suse.de> PR tree-optimization/77399 diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr77808.c b/gcc/testsuite/gcc.dg/tree-ssa/pr77808.c new file mode 100644 index 0000000..6c806ec --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr77808.c @@ -0,0 +1,11 @@ +/* PR tree-optimization/77808 */ +/* { dg-options "-O2 -fprefetch-loop-arrays --param prefetch-latency=0 -w" } */ + +void +daxpy(int n, double da, double * __restrict dx, double * __restrict dy) +{ + int i; + + for (i = 0;i < n; i++) + dy[i] = dy[i] + da*dx[i]; +} diff --git a/gcc/tree-ssa-loop-prefetch.c b/gcc/tree-ssa-loop-prefetch.c index 056815d..43ee85a 100644 --- a/gcc/tree-ssa-loop-prefetch.c +++ b/gcc/tree-ssa-loop-prefetch.c @@ -1162,7 +1162,8 @@ issue_prefetch_ref (struct mem_ref *ref, unsigned unroll_factor, unsigned ahead) NULL, true, GSI_SAME_STMT); } - if (TREE_CODE (addr_base) == SSA_NAME + if (addr_base != addr + && TREE_CODE (addr_base) == SSA_NAME && TREE_CODE (addr) == SSA_NAME) { duplicate_ssa_name_ptr_info (addr, SSA_NAME_PTR_INFO (addr_base)); |