| commit | a112087e4298ca8ec1bc8aef8a2b272e49faa7ac | [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 | a73adc09f5bde9f7041ab07031e39ed7806415f8 | |
| parent | 4010dd72b81b760daaa0361084de6dca8ed86fa1 [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)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122548 91177308-0d34-0410-b5e6-96231b3b80d8