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[Bug optimization/13329] [3.4 Regression] -fcrossjumping (implied by -O1) pessimizes code
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Dec 2003 03:28:18 -0000
- Subject: [Bug optimization/13329] [3.4 Regression] -fcrossjumping (implied by -O1) pessimizes code
- References: <20031206025954.13329.coyote@coyotegulch.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2003-12-06 03:28 -------
In fact there are other regressions in this code (+ is 3.3's asm and - is 3.4's asm) (random4
function):
-.L11:
cmpl %edi, %esi
- jae .L10
+ jae .L11
+.L9:
call random4
movzbl .LC0(%eax), %eax
movb %al, (%ebx)
incl %ebx
incl %esi
- jmp .L11
-.L10:
+ cmpl %edi, %esi
+ jb .L9
+.L11:
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13329