From: Craig Topper <craig.topper@gmail.com>
Date: Sat, 13 May 2017 17:22:16 +0000 (+0000)
Subject: [ValueTracking] Remove const_casts on several calls to computeKnownBits and ComputeSi... 
X-Git-Tag: android-x86-7.1-r4~16312
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=a7f9de44327be2c9610d370ebd45c97f62e176b1;p=android-x86%2Fexternal-llvm.git

[ValueTracking] Remove const_casts on several calls to computeKnownBits and ComputeSignBit. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302991 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index 53782302030..3693e72ce87 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -1284,8 +1284,7 @@ AliasResult BasicAAResult::aliasGEP(const GEPOperator *GEP1, uint64_t V1Size,
         const Value *V = DecompGEP1.VarIndices[i].V;
 
         bool SignKnownZero, SignKnownOne;
-        ComputeSignBit(const_cast<Value *>(V), SignKnownZero, SignKnownOne, DL,
-                       0, &AC, nullptr, DT);
+        ComputeSignBit(V, SignKnownZero, SignKnownOne, DL, 0, &AC, nullptr, DT);
 
         // Zero-extension widens the variable, and so forces the sign
         // bit to zero.
diff --git a/lib/Analysis/DemandedBits.cpp b/lib/Analysis/DemandedBits.cpp
index c2b35b99d7c..8f808f3e787 100644
--- a/lib/Analysis/DemandedBits.cpp
+++ b/lib/Analysis/DemandedBits.cpp
@@ -86,13 +86,11 @@ void DemandedBits::determineLiveOperandBits(
       [&](unsigned BitWidth, const Value *V1, const Value *V2) {
         const DataLayout &DL = I->getModule()->getDataLayout();
         Known = KnownBits(BitWidth);
-        computeKnownBits(const_cast<Value *>(V1), Known, DL, 0,
-                         &AC, UserI, &DT);
+        computeKnownBits(V1, Known, DL, 0, &AC, UserI, &DT);
 
         if (V2) {
           Known2 = KnownBits(BitWidth);
-          computeKnownBits(const_cast<Value *>(V2), Known2, DL,
-                           0, &AC, UserI, &DT);
+          computeKnownBits(V2, Known2, DL, 0, &AC, UserI, &DT);
         }
       };
 
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 28de92c6c88..453f95a697e 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -7513,8 +7513,7 @@ unsigned SelectionDAG::InferPtrAlignment(SDValue Ptr) const {
   if (TLI->isGAPlusOffset(Ptr.getNode(), GV, GVOffset)) {
     unsigned PtrWidth = getDataLayout().getPointerTypeSizeInBits(GV->getType());
     KnownBits Known(PtrWidth);
-    llvm::computeKnownBits(const_cast<GlobalValue *>(GV), Known,
-                           getDataLayout());
+    llvm::computeKnownBits(GV, Known, getDataLayout());
     unsigned AlignBits = Known.countMinTrailingZeros();
     unsigned Align = AlignBits ? 1 << std::min(31U, AlignBits) : 0;
     if (Align)