| commit | 7a9fbab1823e915aa7e2eb7536652d2a3ef8a38a | [log] [tgz] |
|---|---|---|
| author | Louis Gerbarg <lgg@apple.com> | Fri May 09 17:02:49 2014 +0000 |
| committer | Louis Gerbarg <lgg@apple.com> | Fri May 09 17:02:49 2014 +0000 |
| tree | d19df1fa9b9fac637b912039595bea4c9133827d | |
| parent | c0adfbb49d674dc04f39536151f05cc6a5e9e5fb [diff] |
Add custom lowering for add/sub with overflow intrinsics to ARM
This patch adds support to ARM for custom lowering of the
llvm.{u|s}add.with.overflow.i32 intrinsics for i32/i64. This is particularly useful
for handling idiomatic saturating math functions as generated by
InstCombineCompare.
Test cases included.
rdar://14853450
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208435 91177308-0d34-0410-b5e6-96231b3b80d8