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| author | Richard Biener <rguenther@suse.de> | 2014-11-17 09:31:33 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2014-11-17 09:31:33 +0000 |
| commit | 53bc4b3a0db8af545f0b4757b6e1aa0102c21d0f (patch) | |
| tree | 9f820d718a3c99d3f06fc45efad5174eb10cc24d | |
| parent | 0f3422cc9f225076edf45d2fbb5134506c3ad593 (diff) | |
| download | gcc-53bc4b3a0db8af545f0b4757b6e1aa0102c21d0f.zip gcc-53bc4b3a0db8af545f0b4757b6e1aa0102c21d0f.tar.gz gcc-53bc4b3a0db8af545f0b4757b6e1aa0102c21d0f.tar.bz2 | |
re PR tree-optimization/63898 (r217560 caused segfault building 462.libquantum from cpu2006)
2014-11-17 Richard Biener <rguenther@suse.de>
PR middle-end/63898
* match.pd: Guard X / CST -> X * CST' transform against
zero CST.
From-SVN: r217650
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/match.pd | 3 |
2 files changed, 8 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 543e24b..ff93f9a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-11-17 Richard Biener <rguenther@suse.de> + + PR middle-end/63898 + * match.pd: Guard X / CST -> X * CST' transform against + zero CST. + 2014-11-17 Terry Guo <terry.guo@arm.com> * config/arm/thumb1.md (*addsi3_cbranch_scratch): Updated to UAL diff --git a/gcc/match.pd b/gcc/match.pd index 127c7d9..da6599c 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -166,7 +166,8 @@ along with GCC; see the file COPYING3. If not see (simplify (rdiv @0 cst@1) (if (optimize) - (if (flag_reciprocal_math) + (if (flag_reciprocal_math + && !real_zerop (@1)) (with { tree tem = fold_binary (RDIV_EXPR, type, build_one_cst (type), @1); } (if (tem) |