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| author | Evan Cheng <evan.cheng@apple.com> | 2010-02-19 00:34:39 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-02-19 00:34:39 +0000 |
| commit | 97a35fc3a744c905e1aeed8542fae366c7940f95 (patch) | |
| tree | f2d7f0829e8f14fb19a76ee971e7f1da69f75f0c /lib/Analysis/ScalarEvolution.cpp | |
| parent | 853b919d93c62498ba30e7a78ab393291517cd42 (diff) | |
Transform (xor (setcc), (setcc)) == / != 1 to
(xor (setcc), (setcc)) != / == 1.
e.g. On x86_64
%0 = icmp eq i32 %x, 0
%1 = icmp eq i32 %y, 0
%2 = xor i1 %1, %0
br i1 %2, label %bb, label %return
=>
testl %edi, %edi
sete %al
testl %esi, %esi
sete %cl
cmpb %al, %cl
je LBB1_2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96640 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/ScalarEvolution.cpp')
0 files changed, 0 insertions, 0 deletions