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* [Bug tree-optimization/32383] New: [4.3 regression] ICE with reciprocals and -ffast-math
@ 2007-06-17 23:03 reichelt at gcc dot gnu dot org
2007-06-17 23:03 ` [Bug tree-optimization/32383] " reichelt at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2007-06-17 23:03 UTC (permalink / raw)
To: gcc-bugs
The following code snippet triggers an ICE on mainline when compiled with
"g++ -O -ffast-math":
=====================================================
struct A
{
~A();
};
double& foo();
inline void bar (double d) { foo() /= d; }
void baz()
{
A a;
bar(2);
}
=====================================================
This is a very recent regression (not present in 4.3-20070607).
Uros, I'd guess your patch is responsible for the regression:
2007-06-16 Uros Bizjak
PR middle-end/31723
* hooks.c (hook_tree_tree_bool_null): New hook.
* hooks.h (hook_tree_tree_bool_null): Add prototype.
* tree-pass.h (pass_convert_to_rsqrt): Declare.
* passes.c (init_optimization_passes): Add pass_convert_to_rsqrt.
* tree-ssa-math-opts.c (execute_cse_reciprocals): Scan for a/func(b)
and convert it to reciprocal a*rfunc(b).
--
Summary: [4.3 regression] ICE with reciprocals and -ffast-math
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, monitored
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
OtherBugsDependingO 31723
nThis:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32383
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug tree-optimization/32383] [4.3 regression] ICE with reciprocals and -ffast-math 2007-06-17 23:03 [Bug tree-optimization/32383] New: [4.3 regression] ICE with reciprocals and -ffast-math reichelt at gcc dot gnu dot org @ 2007-06-17 23:03 ` reichelt at gcc dot gnu dot org 2007-06-17 23:21 ` reichelt at gcc dot gnu dot org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: reichelt at gcc dot gnu dot org @ 2007-06-17 23:03 UTC (permalink / raw) To: gcc-bugs -- reichelt at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.3.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32383 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/32383] [4.3 regression] ICE with reciprocals and -ffast-math 2007-06-17 23:03 [Bug tree-optimization/32383] New: [4.3 regression] ICE with reciprocals and -ffast-math reichelt at gcc dot gnu dot org 2007-06-17 23:03 ` [Bug tree-optimization/32383] " reichelt at gcc dot gnu dot org @ 2007-06-17 23:21 ` reichelt at gcc dot gnu dot org 2007-06-18 6:41 ` ubizjak at gmail dot com ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: reichelt at gcc dot gnu dot org @ 2007-06-17 23:21 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from reichelt at gcc dot gnu dot org 2007-06-17 23:21 ------- Btw., the error message is: bug.cc: In function 'void baz()': bug.cc:10: internal compiler error: tree check: expected ssa_name, have real_cst in execute_cse_reciprocals, at tree-ssa-math-opts.c:510 Please submit a full bug report, [etc.] -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32383 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/32383] [4.3 regression] ICE with reciprocals and -ffast-math 2007-06-17 23:03 [Bug tree-optimization/32383] New: [4.3 regression] ICE with reciprocals and -ffast-math reichelt at gcc dot gnu dot org 2007-06-17 23:03 ` [Bug tree-optimization/32383] " reichelt at gcc dot gnu dot org 2007-06-17 23:21 ` reichelt at gcc dot gnu dot org @ 2007-06-18 6:41 ` ubizjak at gmail dot com 2007-06-18 8:31 ` uros at gcc dot gnu dot org 2007-06-18 8:33 ` ubizjak at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: ubizjak at gmail dot com @ 2007-06-18 6:41 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from ubizjak at gmail dot com 2007-06-18 06:41 ------- Patch in testing. -- ubizjak at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |ubizjak at gmail dot com |dot org | Status|UNCONFIRMED |ASSIGNED Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2007-06-18 06:41:08 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32383 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/32383] [4.3 regression] ICE with reciprocals and -ffast-math 2007-06-17 23:03 [Bug tree-optimization/32383] New: [4.3 regression] ICE with reciprocals and -ffast-math reichelt at gcc dot gnu dot org ` (2 preceding siblings ...) 2007-06-18 6:41 ` ubizjak at gmail dot com @ 2007-06-18 8:31 ` uros at gcc dot gnu dot org 2007-06-18 8:33 ` ubizjak at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: uros at gcc dot gnu dot org @ 2007-06-18 8:31 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from uros at gcc dot gnu dot org 2007-06-18 08:31 ------- Subject: Bug 32383 Author: uros Date: Mon Jun 18 08:30:47 2007 New Revision: 125790 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=125790 Log: PR tree-optimization/32383 * targhooks.c (default_builtin_reciprocal): Add new bool argument. * targhooks.h (default_builtin_reciprocal): Update prototype. * target.h (struct gcc_target): Update builtin_reciprocal. * doc/tm.texi (TARGET_BUILTIN_RECIPROCAL): Update description. * tree-ssa-math-opts (execute_cse_reciprocals): Skip statements where arg1 is not SSA_NAME. Pass true to targetm.builtin_reciprocal when fndecl is in BUILT_IN_MD class. (execute_convert_to_rsqrt): Ditto. * config/i386/i386.c (ix86_builtin_reciprocal): Update for new bool argument. Convert IX86_BUILTIN_SQRTPS code only when md_fn is true. Convert BUILT_IN_SQRTF code only when md_fn is false. testsuite/ChangeLog: PR tree-optimization/32383 * testsuite/g++.dg/opt/pr32383.C: New test. Added: trunk/gcc/testsuite/g++.dg/opt/pr32383.C Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.c trunk/gcc/doc/tm.texi trunk/gcc/target.h trunk/gcc/targhooks.c trunk/gcc/targhooks.h trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-math-opts.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32383 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/32383] [4.3 regression] ICE with reciprocals and -ffast-math 2007-06-17 23:03 [Bug tree-optimization/32383] New: [4.3 regression] ICE with reciprocals and -ffast-math reichelt at gcc dot gnu dot org ` (3 preceding siblings ...) 2007-06-18 8:31 ` uros at gcc dot gnu dot org @ 2007-06-18 8:33 ` ubizjak at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: ubizjak at gmail dot com @ 2007-06-18 8:33 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from ubizjak at gmail dot com 2007-06-18 08:33 ------- Fixed. -- ubizjak at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32383 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2007-06-18 8:33 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2007-06-17 23:03 [Bug tree-optimization/32383] New: [4.3 regression] ICE with reciprocals and -ffast-math reichelt at gcc dot gnu dot org 2007-06-17 23:03 ` [Bug tree-optimization/32383] " reichelt at gcc dot gnu dot org 2007-06-17 23:21 ` reichelt at gcc dot gnu dot org 2007-06-18 6:41 ` ubizjak at gmail dot com 2007-06-18 8:31 ` uros at gcc dot gnu dot org 2007-06-18 8:33 ` ubizjak at gmail dot com
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