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| author | Richard Biener <rguenther@suse.de> | 2016-05-31 12:18:15 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-05-31 12:18:15 +0000 |
| commit | 0d99f8a0705e47ca7fcee70f25cab0098ec64e48 (patch) | |
| tree | 85254d6388859050eae0e98b7d517d512f953dfb /gcc/testsuite | |
| parent | a1293f402a25801d03a58312b06b65c33702c726 (diff) | |
| download | gcc-0d99f8a0705e47ca7fcee70f25cab0098ec64e48.zip gcc-0d99f8a0705e47ca7fcee70f25cab0098ec64e48.tar.gz gcc-0d99f8a0705e47ca7fcee70f25cab0098ec64e48.tar.bz2 | |
re PR tree-optimization/71352 (ICE at -O1 and above on x86_64-linux-gnu: in zero_one_operation, at tree-ssa-reassoc.c:1251)
2016-05-31 Richard Biener <rguenther@suse.de>
PR tree-optimization/71352
* tree-ssa-reassoc.c (zero_one_operation): Handle op equal to
minus one and a negate.
* gcc.dg/tree-ssa/reassoc-45.c: New testcase.
From-SVN: r236920
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/reassoc-45.c | 15 |
2 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 563d5e5..8c5def4 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-05-31 Richard Biener <rguenther@suse.de> + + PR tree-optimization/71352 + * gcc.dg/tree-ssa/reassoc-45.c: New testcase. + 2016-05-31 Thomas Preud'homme <thomas.preudhomme@arm.com> * gcc.target/arm/armv5_thumb_isa.c: New test. diff --git a/gcc/testsuite/gcc.dg/tree-ssa/reassoc-45.c b/gcc/testsuite/gcc.dg/tree-ssa/reassoc-45.c new file mode 100644 index 0000000..48f6b74 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/reassoc-45.c @@ -0,0 +1,15 @@ +/* PR/71352 */ +/* { dg-do compile } */ +/* { dg-options "-O -fdump-tree-reassoc1" } */ + +unsigned a, b, c, d, e; + +void +fn1 () +{ + unsigned f; + e = f = d * -b + a * -c; +} + +/* Check that we factor -1 and create -(d * b + a * c). */ +/* { dg-final { scan-tree-dump-times " = -" 1 "reassoc1" } } */ |