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2 Commits

Author SHA1 Message Date
Benjamin Kramer
0b68b758bb DAGCombine: visitXOR can replace a node without returning it, bail out in that case. 
Fixes the crash reported in PR15608.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178429 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-30 21:28:18 +00:00
Evan Cheng
78ec0255d9 Fix a DAG combine bug visitBRCOND() is transforming br(xor(x, y)) to br(x != y). 
It cahced XOR's operands before calling visitXOR() but failed to update the
operands when visitXOR changed the XOR node.

rdar://12968664


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171999 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-09 20:56:40 +00:00