Apply most suggestions of clang-tidy's performance-unnecessary-value-param
Avoids unnecessary copies. All changes audited & pass tests with asan.
No functional change intended.
llvm-svn: 272190
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineInternal.h b/llvm/lib/Transforms/InstCombine/InstCombineInternal.h
index 326029d..0f1121a 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineInternal.h
+++ b/llvm/lib/Transforms/InstCombine/InstCombineInternal.h
@@ -522,12 +522,12 @@
Value *SimplifyDemandedUseBits(Value *V, APInt DemandedMask, APInt &KnownZero,
APInt &KnownOne, unsigned Depth,
Instruction *CxtI);
- bool SimplifyDemandedBits(Use &U, APInt DemandedMask, APInt &KnownZero,
+ bool SimplifyDemandedBits(Use &U, const APInt &DemandedMask, APInt &KnownZero,
APInt &KnownOne, unsigned Depth = 0);
/// Helper routine of SimplifyDemandedUseBits. It tries to simplify demanded
/// bit for "r1 = shr x, c1; r2 = shl r1, c2" instruction sequence.
Value *SimplifyShrShlDemandedBits(Instruction *Lsr, Instruction *Sftl,
- APInt DemandedMask, APInt &KnownZero,
+ const APInt &DemandedMask, APInt &KnownZero,
APInt &KnownOne);
/// \brief Tries to simplify operands to an integer instruction based on its