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Teach InstructionSimplify about phi nodes. I chose to have it simply
[oota-llvm.git]
/
lib
/
Analysis
/
InstructionSimplify.cpp
diff --git
a/lib/Analysis/InstructionSimplify.cpp
b/lib/Analysis/InstructionSimplify.cpp
index b3e817a750623641ce12e182ce4a7a61f04e497a..210399d7291ebb1b3b592eac1d9e3cc9e75c2ec6 100644
(file)
--- a/
lib/Analysis/InstructionSimplify.cpp
+++ b/
lib/Analysis/InstructionSimplify.cpp
@@
-699,6
+699,8
@@
Value *llvm::SimplifyInstruction(Instruction *I, const TargetData *TD) {
SmallVector<Value*, 8> Ops(I->op_begin(), I->op_end());
return SimplifyGEPInst(&Ops[0], Ops.size(), TD);
}
+ case Instruction::PHI:
+ return cast<PHINode>(I)->hasConstantValue();
}
}