[Bug rtl-optimization/57518] [4.9 Regression] Redundant insn generated in LRA
wmi at google dot com
gcc-bugzilla@gcc.gnu.org
Thu Jun 20 15:55:00 GMT 2013
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57518
wmi at google dot com changed:
What |Removed |Added
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CC| |rguenth at gcc dot gnu.org
--- Comment #3 from wmi at google dot com ---
oh, sorry to make it misleading, but the 4.8.0 below is an experimental version
(see its date is 20120613, at that time LRA has not been merged):
Target: x86_64-linux-gnu
gcc version 4.8.0 20120613 (experimental) (GCC)
gcc -O2 -S 1.c
.cfi_startproc
movzbl ip+2(%rip), %eax
andl $3, %eax
movl %eax, total(%rip)
ret
.cfi_endproc
I just verified using 4.8.0 and 4.8.1 releases, the problem was there for both.
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