| commit | ea9152e551364e54da36e51a483c36ee15669a2e | [log] [tgz] |
|---|---|---|
| author | Benjamin Kramer <benny.kra@googlemail.com> | Fri Dec 24 21:17:12 2010 +0000 |
| committer | Benjamin Kramer <benny.kra@googlemail.com> | Fri Dec 24 21:17:12 2010 +0000 |
| tree | ae93952ff4dd0f241cdcfbea39a10547f17f6fba | |
| parent | 7f2bb4dcaebaf776e9e09e693593fd8fd80f9047 [diff] |
MemCpyOpt: Turn memcpys from a constant into a memset if possible.
This allows us to compile "int cst[] = {-1, -1, -1};" into
movl $-1, 16(%rsp)
movq $-1, 8(%rsp)
instead of
movl _cst+8(%rip), %eax
movl %eax, 16(%rsp)
movq _cst(%rip), %rax
movq %rax, 8(%rsp)
llvm-svn: 122548