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[Bug lto/49302] [4.7 Regression] FAIL: gcc.dg/lto/20110201-1 c_lto_20110201-1_0.o-c_lto_20110201-1_0.o
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 7 Jun 2011 13:47:45 +0000
- Subject: [Bug lto/49302] [4.7 Regression] FAIL: gcc.dg/lto/20110201-1 c_lto_20110201-1_0.o-c_lto_20110201-1_0.o
- Auto-submitted: auto-generated
- References: <bug-49302-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49302
--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-06-07 13:47:00 UTC ---
The original failure only occured with -O0 compile and -O2 -ffast-math link.
The linker-plugin use was already a workaround for the -O0 link by collect2,
so not sure why that isn't working anymore. Thus, I guess this still needs
investigation.
I don't see the cabs -> sqrt (pow, pow) folding anymore. Ah, because it
happens from PRE which folds and inserts cabs into the predecessor. But
PRE runs after pass_sincos.
I think the cabs -> sqrt (pow, pow) folding should happen during
pass_sincos.