[InstCombine] Add an InstCombine specific wrapper around isKnownToBeAPowerOfTwo to shorten code. NFC
We have wrappers for several other ValueTracking methods that take care of passing all of the analysis and assumption cache parameters. This extends it to isKnownToBeAPowerOfTwo.
llvm-svn: 303924
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index fc13854..4d40835 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
@@ -47,9 +47,7 @@
// inexact. Similarly for <<.
BinaryOperator *I = dyn_cast<BinaryOperator>(V);
if (I && I->isLogicalShift() &&
- isKnownToBeAPowerOfTwo(I->getOperand(0), IC.getDataLayout(), false, 0,
- &IC.getAssumptionCache(), &CxtI,
- &IC.getDominatorTree())) {
+ IC.isKnownToBeAPowerOfTwo(I->getOperand(0), false, 0, &CxtI)) {
// We know that this is an exact/nuw shift and that the input is a
// non-zero context as well.
if (Value *V2 = simplifyValueKnownNonZero(I->getOperand(0), IC, CxtI)) {
@@ -1240,7 +1238,7 @@
return BO;
}
- if (isKnownToBeAPowerOfTwo(Op1, DL, /*OrZero*/ true, 0, &AC, &I, &DT)) {
+ if (isKnownToBeAPowerOfTwo(Op1, /*OrZero*/ true, 0, &I)) {
// X sdiv (1 << Y) -> X udiv (1 << Y) ( -> X u>> Y)
// Safe because the only negative value (1 << Y) can take on is
// INT_MIN, and X sdiv INT_MIN == X udiv INT_MIN == 0 if X doesn't have
@@ -1487,7 +1485,7 @@
I.getType());
// X urem Y -> X and Y-1, where Y is a power of 2,
- if (isKnownToBeAPowerOfTwo(Op1, DL, /*OrZero*/ true, 0, &AC, &I, &DT)) {
+ if (isKnownToBeAPowerOfTwo(Op1, /*OrZero*/ true, 0, &I)) {
Constant *N1 = Constant::getAllOnesValue(I.getType());
Value *Add = Builder->CreateAdd(Op1, N1);
return BinaryOperator::CreateAnd(Op0, Add);