http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
Steven Bosscher steven at gcc dot gnu.org changed:
What|Removed |Added
Status|ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
--- Comment #11 from Segher Boessenkool segher at gcc dot gnu.org 2012-09-26
05:18:49 UTC ---
Author: segher
Date: Wed Sep 26 05:18:43 2012
New Revision: 191752
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=191752
Log:
gcc/
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
Segher Boessenkool segher at gcc dot gnu.org changed:
What|Removed |Added
CC|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
Paolo Bonzini bonzini at gnu dot org changed:
What|Removed |Added
Status|NEW |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
Alan Modra amodra at gmail dot com changed:
What|Removed |Added
CC||bonzini at gnu dot
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
--- Comment #9 from Paolo Bonzini bonzini at gnu dot org 2012-04-25 20:00:57
UTC ---
The handling of this code sequence in fold-const changed back and forth many
times, and this is likely the reason why GCC 4.1 produced straight-line code
while
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
--- Comment #7 from Alan Modra amodra at gmail dot com 2012-04-25 05:26:28
UTC ---
Some more data points. The testcase in #1 produces
gcc-4.3.6
cmpldi 7,3,27
mr 9,3
li 3,0
bgtlr 7
lis 0,0xcf8
ori 0,0,63
srd 0,0,9
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
Steven Bosscher steven at gcc dot gnu.org changed:
What|Removed |Added
Summary|Poor code for conversion|[powerpc] Poor
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
--- Comment #4 from Steven Bosscher steven at gcc dot gnu.org 2012-04-23
20:13:29 UTC ---
Smaller test case:
_Bool
foo (long unsigned int a)
{
return (((1L a) 217579583UL) != 0);
}
==
.file t.c
.section.toc,aw
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
David Edelsohn dje at gcc dot gnu.org changed:
What|Removed |Added
CC||dje at gcc dot
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087
--- Comment #6 from David Edelsohn dje at gcc dot gnu.org 2012-04-24 00:40:28
UTC ---
GCC 4.1 produced:
lis 9,0xcf8
li 0,1
ori 9,9,63
slw 0,0,3
and 0,0,9
neg 0,0
srwi 3,0,31
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