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* [Bug target/70079] missed constant propagation in memcpy expansion
[not found] <bug-70079-4@http.gcc.gnu.org/bugzilla/>
@ 2021-08-07 2:14 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; only message in thread
From: pinskia at gcc dot gnu.org @ 2021-08-07 2:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70079
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-08-07
Keywords| |missed-optimization
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
movq (%rsi), %rax
movq %rdi, %rcx
leaq 8(%rdi), %rdi
movq %rax, -8(%rdi)
movq 504(%rsi), %rax
movq %rax, 496(%rdi)
andq $-8, %rdi
xorl %eax, %eax
subq %rdi, %rcx
subq %rcx, %rsi
addl $512, %ecx
shrl $3, %ecx
Confirmed.
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[not found] <bug-70079-4@http.gcc.gnu.org/bugzilla/>
2021-08-07 2:14 ` [Bug target/70079] missed constant propagation in memcpy expansion pinskia at gcc dot gnu.org
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