| commit | 87f50aafbc14baf74a23c7b9f060df315ca66fea | [log] [tgz] |
|---|---|---|
| author | James Molloy <james.molloy@arm.com> | Tue Jun 07 12:13:34 2016 +0000 |
| committer | James Molloy <james.molloy@arm.com> | Tue Jun 07 12:13:34 2016 +0000 |
| tree | f8ad9c95322e98f47dbcaa94d79a9cc0fcc9e2ba | |
| parent | d5127f42734f9808ec9012def67674ea5d421efd [diff] |
[ARM] Shrink post-indexed LDR and STR to LDM/STM
A Thumb-2 post-indexed LDR instruction such as:
ldr.w r0, [r1], #4
Can be rewritten as:
ldm.n r1!, {r0}
LDMs can be more expensive than LDRs on some cores, so this has been enabled only in minsize mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272002 91177308-0d34-0410-b5e6-96231b3b80d8