From d738e6a7b38fc5dae24f2a83d7ff54d4a801bd75 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Fri, 24 Mar 2017 03:57:24 +0000
Subject: [PATCH] [ValueTracking] Convert more places to use
setHighBits/setLowBits/setSignBit. NFCI
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298683 91177308-0d34-0410-b5e6-96231b3b80d8
---
lib/Analysis/ValueTracking.cpp | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 9f260b21ca8..21c1595f094 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -971,7 +971,7 @@ static void computeKnownBitsFromOperator(const Operator *I, APInt &KnownZero,
LeadZ = std::min(BitWidth,
LeadZ + BitWidth - RHSUnknownLeadingOnes - 1);
- KnownZero = APInt::getHighBitsSet(BitWidth, LeadZ);
+ KnownZero.setHighBits(LeadZ);
break;
}
case Instruction::Select: {
@@ -1233,7 +1233,7 @@ static void computeKnownBitsFromOperator(const Operator *I, APInt &KnownZero,
Align = Q.DL.getABITypeAlignment(AI->getAllocatedType());
if (Align > 0)
- KnownZero = APInt::getLowBitsSet(BitWidth, countTrailingZeros(Align));
+ KnownZero.setLowBits(countTrailingZeros(Align));
break;
}
case Instruction::GetElementPtr: {
@@ -1280,7 +1280,7 @@ static void computeKnownBitsFromOperator(const Operator *I, APInt &KnownZero,
}
}
- KnownZero = APInt::getLowBitsSet(BitWidth, TrailZ);
+ KnownZero.setLowBits(TrailZ);
break;
}
case Instruction::PHI: {
@@ -1321,9 +1321,8 @@ static void computeKnownBitsFromOperator(const Operator *I, APInt &KnownZero,
APInt KnownZero3(KnownZero), KnownOne3(KnownOne);
computeKnownBits(L, KnownZero3, KnownOne3, Depth + 1, Q);
- KnownZero = APInt::getLowBitsSet(
- BitWidth, std::min(KnownZero2.countTrailingOnes(),
- KnownZero3.countTrailingOnes()));
+ KnownZero.setLowBits(std::min(KnownZero2.countTrailingOnes(),
+ KnownZero3.countTrailingOnes()));
if (DontImproveNonNegativePhiBits)
break;
@@ -1343,7 +1342,7 @@ static void computeKnownBitsFromOperator(const Operator *I, APInt &KnownZero,
if (KnownZero2.isNegative() && KnownZero3.isNegative())
KnownZero.setSignBit();
else if (KnownOne2.isNegative() && KnownOne3.isNegative())
- KnownOne.setBit(BitWidth - 1);
+ KnownOne.setSignBit();
}
// (sub nsw non-negative, negative) --> non-negative
--
2.40.0