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| author | Evan Cheng <evan.cheng@apple.com> | 2010-05-19 01:08:17 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-05-19 01:08:17 +0000 |
| commit | 0a942dbb1e0f303191639498c35e742309f08a64 (patch) | |
| tree | b1eedb00f314dd8d692314e88f8b0cbbca1eb075 /lib/Support/Timer.cpp | |
| parent | 7c2e03916c22d9ad1d8596ad00dee04a9f1454ed (diff) | |
Intrinsics which do a vector compare (results are all zero or all ones) are modeled as icmp / fcmp + sext. This is turned into a vsetcc by dag combine (yes, not a good long term solution). The targets can then isel the vsetcc to the appropriate instruction.
The trouble arises when the result of a vector cmp + sext is then and'ed with all ones. Instcombine will turn it into a vector cmp + zext, dag combiner will miss turning it into a vsetcc and hell breaks loose after that.
Teach dag combine to turn a vector cpm + zest into a vsetcc + and 1. This fixes rdar://7923010.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104094 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/Timer.cpp')
0 files changed, 0 insertions, 0 deletions