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Implement InstCombine/cast.ll:test29
author
Chris Lattner
<sabre@nondot.org>
Fri, 5 May 2006 06:39:07 +0000
(06:39 +0000)
committer
Chris Lattner
<sabre@nondot.org>
Fri, 5 May 2006 06:39:07 +0000
(06:39 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28126
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Transforms/Scalar/InstructionCombining.cpp
patch
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diff --git
a/lib/Transforms/Scalar/InstructionCombining.cpp
b/lib/Transforms/Scalar/InstructionCombining.cpp
index dfd568c33e11425bfc23ebf8a7dd3aa6ab2d1dea..2c8f6eda4955a2582e9ff7b05da2bec90eff7475 100644
(file)
--- a/
lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/
lib/Transforms/Scalar/InstructionCombining.cpp
@@
-2640,6
+2640,19
@@
Instruction *InstCombiner::visitAnd(BinaryOperator &I) {
}
}
}
}
+ // fold (and (cast A), (cast B)) -> (cast (and A, B))
+ if (CastInst *Op0C = dyn_cast<CastInst>(Op0)) {
+ if (CastInst *Op1C = dyn_cast<CastInst>(Op1))
+ if (Op0C->getOperand(0)->getType() == Op1C->getOperand(0)->getType() &&
+ Op0C->getOperand(0)->getType()->isIntegral()) {
+ Instruction *NewOp = BinaryOperator::createAnd(Op0C->getOperand(0),
+ Op1C->getOperand(0),
+ I.getName());
+ InsertNewInstBefore(NewOp, I);
+ return new CastInst(NewOp, I.getType());
+ }
+ }
+
return Changed ? &I : 0;
}
return Changed ? &I : 0;
}
@@
-2865,6
+2878,20
@@
Instruction *InstCombiner::visitOr(BinaryOperator &I) {
}
}
}
}
}
}
+
+ // fold (or (cast A), (cast B)) -> (cast (or A, B))
+ if (CastInst *Op0C = dyn_cast<CastInst>(Op0)) {
+ if (CastInst *Op1C = dyn_cast<CastInst>(Op1))
+ if (Op0C->getOperand(0)->getType() == Op1C->getOperand(0)->getType() &&
+ Op0C->getOperand(0)->getType()->isIntegral()) {
+ Instruction *NewOp = BinaryOperator::createOr(Op0C->getOperand(0),
+ Op1C->getOperand(0),
+ I.getName());
+ InsertNewInstBefore(NewOp, I);
+ return new CastInst(NewOp, I.getType());
+ }
+ }
+
return Changed ? &I : 0;
}
return Changed ? &I : 0;
}
@@
-3030,6
+3057,19
@@
Instruction *InstCombiner::visitXor(BinaryOperator &I) {
if (Instruction *R = AssociativeOpt(I, FoldSetCCLogical(*this, RHS)))
return R;
if (Instruction *R = AssociativeOpt(I, FoldSetCCLogical(*this, RHS)))
return R;
+ // fold (xor (cast A), (cast B)) -> (cast (xor A, B))
+ if (CastInst *Op0C = dyn_cast<CastInst>(Op0)) {
+ if (CastInst *Op1C = dyn_cast<CastInst>(Op1))
+ if (Op0C->getOperand(0)->getType() == Op1C->getOperand(0)->getType() &&
+ Op0C->getOperand(0)->getType()->isIntegral()) {
+ Instruction *NewOp = BinaryOperator::createXor(Op0C->getOperand(0),
+ Op1C->getOperand(0),
+ I.getName());
+ InsertNewInstBefore(NewOp, I);
+ return new CastInst(NewOp, I.getType());
+ }
+ }
+
return Changed ? &I : 0;
}
return Changed ? &I : 0;
}