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
