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Fix Transforms/InstCombine/2006-05-04-DemandedBitCrash.ll
author
Chris Lattner
<sabre@nondot.org>
Thu, 4 May 2006 17:33:35 +0000
(17:33 +0000)
committer
Chris Lattner
<sabre@nondot.org>
Thu, 4 May 2006 17:33:35 +0000
(17:33 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28101
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Transforms/Scalar/InstructionCombining.cpp
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diff --git
a/lib/Transforms/Scalar/InstructionCombining.cpp
b/lib/Transforms/Scalar/InstructionCombining.cpp
index 7e9c3841cce74b58fb3b2af128ea8847fea4d9bb..dfd568c33e11425bfc23ebf8a7dd3aa6ab2d1dea 100644
(file)
--- a/
lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/
lib/Transforms/Scalar/InstructionCombining.cpp
@@
-456,6
+456,8
@@
static void ComputeMaskedBits(Value *V, uint64_t Mask, uint64_t &KnownZero,
Instruction *I = dyn_cast<Instruction>(V);
if (!I) return;
+ Mask &= V->getType()->getIntegralTypeMask();
+
switch (I->getOpcode()) {
case Instruction::And:
// If either the LHS or the RHS are Zero, the result is zero.
@@
-713,6
+715,8
@@
bool InstCombiner::SimplifyDemandedBits(Value *V, uint64_t DemandedMask,
Instruction *I = dyn_cast<Instruction>(V);
if (!I) return false; // Only analyze instructions.
+ DemandedMask &= V->getType()->getIntegralTypeMask();
+
uint64_t KnownZero2, KnownOne2;
switch (I->getOpcode()) {
default: break;