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[Bug target/43766] New: x86 prefetch doesn't use complex memory addressing
- From: "astrange at ithinksw dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 Apr 2010 07:52:35 -0000
- Subject: [Bug target/43766] New: x86 prefetch doesn't use complex memory addressing
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
Source:
void p(int *a, int i)
{
__builtin_prefetch(&a[i]);
}
> gcc -O3 -fomit-frame-pointer -S prefetch.c
_p:
movslq %esi, %rsi
leaq (%rdi,%rsi,4), %rax
prefetcht0 (%rax)
ret
leaq and prefetch should be merged.
--
Summary: x86 prefetch doesn't use complex memory addressing
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: astrange at ithinksw dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43766