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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c/96370] New: ice with -ffast-math Date: Wed, 29 Jul 2020 14:23:42 +0000 [thread overview] Message-ID: <bug-96370-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96370 Bug ID: 96370 Summary: ice with -ffast-math Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: dcb314 at hotmail dot com Target Milestone: --- Recent gcc trunk, with this C source code: a() { _Decimal128 b; c(-b * b); } and compiler flag -O2 -ffast-math, does this: during GIMPLE pass: reassoc bug633.c: In function ‘a’: bug633.c:1:1: internal compiler error: in gimple_build_assign_1, at gimple.c:455 1 | a() { | ^ 0x96e82e gimple_build_assign_1(tree_node*, tree_code, tree_node*, tree_node*, tr ee_node*) ../../trunk.git/gcc/gimple.c:455 0xec0a0b rewrite_expr_tree(gimple*, unsigned int, vec<operand_entry*, va_heap, v l_ptr>, bool, bool) ../../trunk.git/gcc/tree-ssa-reassoc.c:4963 0xec0828 rewrite_expr_tree(gimple*, unsigned int, vec<operand_entry*, va_heap, v l_ptr>, bool, bool) ../../trunk.git/gcc/tree-ssa-reassoc.c:5007 0xeb6d9e reassociate_bb(basic_block_def*) ../../trunk.git/gcc/tree-ssa-reassoc.c:6480 The bug seems to have existed since sometime before 20200630. Thanks to cvise for reducing the code quickly.
next reply other threads:[~2020-07-29 14:23 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-07-29 14:23 dcb314 at hotmail dot com [this message] 2020-07-30 6:00 ` [Bug tree-optimization/96370] " rguenth at gcc dot gnu.org 2020-07-30 7:28 ` marxin at gcc dot gnu.org 2020-07-30 7:35 ` [Bug tree-optimization/96370] ICE with -ffast-math since r7-950-g8a85cee26eabf5cf marxin at gcc dot gnu.org 2020-07-30 8:02 ` rguenth at gcc dot gnu.org 2020-07-30 8:15 ` rguenth at gcc dot gnu.org 2020-07-30 9:36 ` cvs-commit at gcc dot gnu.org 2020-07-30 9:46 ` [Bug tree-optimization/96370] [8/9/10 Regression] " rguenth at gcc dot gnu.org 2020-09-11 12:12 ` cvs-commit at gcc dot gnu.org 2020-12-02 12:21 ` [Bug tree-optimization/96370] [8/9 " cvs-commit at gcc dot gnu.org 2021-03-17 11:14 ` [Bug tree-optimization/96370] [8 " cvs-commit at gcc dot gnu.org 2021-03-17 11:15 ` rguenth at gcc dot gnu.org
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