[Bug rtl-optimization/18146] if-conversion is not performed for some reason
pinskia at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Mon Apr 25 02:14:00 GMT 2005
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-25 02:14 -------
We get now on the mainline:
foo:
cmpl $5, %eax
movl %eax, %ecx
ja .L2
movl $1, %eax
movl $1, %edx
sall %cl, %eax
testb $42, %al
je .L2
movl %edx, %eax
ret
.p2align 4,,7
.L2:
xorl %edx, %edx
movl %edx, %eax
ret
I think the problem is really that we have multiple predecessors or something like that. If we lowed the
switch at the tree level, then PHI-OPT would catch this.
--
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2005-01-24 00:57:13 |2005-04-25 02:14:13
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18146
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