| commit | 1cd1d02141788b212e185d190b4c358e47cc74b4 | [log] [tgz] |
|---|---|---|
| author | Shuxin Yang <shuxin.llvm@gmail.com> | Mon Mar 25 22:52:29 2013 +0000 |
| committer | Shuxin Yang <shuxin.llvm@gmail.com> | Mon Mar 25 22:52:29 2013 +0000 |
| tree | fa0982071c8d36376f6fa7a562c247805d826b60 | |
| parent | 3800f5748ffdb55d8838eac9300d84276c3dd2c1 [diff] |
Disable some unsafe-fp-math DAG-combine transformation after legalization.
For instance, following transformation will be disabled:
x + x + x => 3.0f * x;
The problem of these transformations is that it introduces a FP constant, which
following Instruction-Selection pass cannot handle.
Reviewed by Nadav, thanks a lot!
rdar://13445387
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177933 91177308-0d34-0410-b5e6-96231b3b80d8