https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68264
--- Comment #2 from rsandifo at gcc dot gnu.org
---
Author: rsandifo
Date: Fri Nov 13 14:43:38 2015
New Revision: 230323
URL: https://gcc.gnu.org/viewcvs?rev=230323&root=gcc&view=rev
Log:
PR68264: Use unordered comparisons for tree-call-cdce.c
As reported in PR 68264, tree-call-cdce.c should be using unordered
comparisons for the range checks, in order to avoid raising FE_INVALID
for quiet NaNs.
Tested on x86_64-linux-gnu and aarch64-linux-gnu. The test failed on
aarch64-linux-gnu before the patch, but it didn't on x86_64-linux-gnu
because it used unordered comparisons for the previous ordered tree codes.
gcc/
PR tree-optimization/68264
* tree-call-cdce.c (gen_one_condition): Update commentary.
(gen_conditions_for_pow_int_base): Invert the sense of the tests
passed to gen_one_condition.
(gen_conditions_for_domain): Likewise. Use unordered comparisons.
(shrink_wrap_one_built_in_call): Invert the sense of the tests,
using EDGE_FALSE_VALUE for edges to the call block and
EDGE_TRUE_VALUE for the others.
gcc/testsuite/
PR tree-optimization/68264
* gcc.dg/torture/pr68264.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr68264.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-call-cdce.c
