From 1fc08f5e9ef733ef1ce6f363fecedc2260e78974 Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Sat, 14 Apr 2012 13:54:10 +0000
Subject: Vendor import of llvm trunk r154661:
http://llvm.org/svn/llvm-project/llvm/trunk@r154661
---
lib/Analysis/Lint.cpp | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)
(limited to 'lib/Analysis/Lint.cpp')
diff --git a/lib/Analysis/Lint.cpp b/lib/Analysis/Lint.cpp
index 38d677d..83bdf52 100644
--- a/lib/Analysis/Lint.cpp
+++ b/lib/Analysis/Lint.cpp
@@ -44,6 +44,7 @@
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetLibraryInfo.h"
#include "llvm/Pass.h"
#include "llvm/PassManager.h"
#include "llvm/IntrinsicInst.h"
@@ -103,6 +104,7 @@ namespace {
AliasAnalysis *AA;
DominatorTree *DT;
TargetData *TD;
+ TargetLibraryInfo *TLI;
std::string Messages;
raw_string_ostream MessagesStr;
@@ -117,6 +119,7 @@ namespace {
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<AliasAnalysis>();
+ AU.addRequired<TargetLibraryInfo>();
AU.addRequired<DominatorTree>();
}
virtual void print(raw_ostream &O, const Module *M) const {}
@@ -149,6 +152,7 @@ namespace {
char Lint::ID = 0;
INITIALIZE_PASS_BEGIN(Lint, "lint", "Statically lint-checks LLVM IR",
false, true)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfo)
INITIALIZE_PASS_DEPENDENCY(DominatorTree)
INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
INITIALIZE_PASS_END(Lint, "lint", "Statically lint-checks LLVM IR",
@@ -174,6 +178,7 @@ bool Lint::runOnFunction(Function &F) {
AA = &getAnalysis<AliasAnalysis>();
DT = &getAnalysis<DominatorTree>();
TD = getAnalysisIfAvailable<TargetData>();
+ TLI = &getAnalysis<TargetLibraryInfo>();
visit(F);
dbgs() << MessagesStr.str();
Messages.clear();
@@ -411,9 +416,8 @@ void Lint::visitMemoryReference(Instruction &I,
if (Align != 0) {
unsigned BitWidth = TD->getTypeSizeInBits(Ptr->getType());
- APInt Mask = APInt::getAllOnesValue(BitWidth),
- KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
- ComputeMaskedBits(Ptr, Mask, KnownZero, KnownOne, TD);
+ APInt KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
+ ComputeMaskedBits(Ptr, KnownZero, KnownOne, TD);
Assert1(!(KnownOne & APInt::getLowBitsSet(BitWidth, Log2_32(Align))),
"Undefined behavior: Memory reference address is misaligned", &I);
}
@@ -471,9 +475,8 @@ static bool isZero(Value *V, TargetData *TD) {
if (isa<UndefValue>(V)) return true;
unsigned BitWidth = cast<IntegerType>(V->getType())->getBitWidth();
- APInt Mask = APInt::getAllOnesValue(BitWidth),
- KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
- ComputeMaskedBits(V, Mask, KnownZero, KnownOne, TD);
+ APInt KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
+ ComputeMaskedBits(V, KnownZero, KnownOne, TD);
return KnownZero.isAllOnesValue();
}
@@ -614,10 +617,10 @@ Value *Lint::findValueImpl(Value *V, bool OffsetOk,
// As a last resort, try SimplifyInstruction or constant folding.
if (Instruction *Inst = dyn_cast<Instruction>(V)) {
- if (Value *W = SimplifyInstruction(Inst, TD, DT))
+ if (Value *W = SimplifyInstruction(Inst, TD, TLI, DT))
return findValueImpl(W, OffsetOk, Visited);
} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- if (Value *W = ConstantFoldConstantExpression(CE, TD))
+ if (Value *W = ConstantFoldConstantExpression(CE, TD, TLI))
if (W != V)
return findValueImpl(W, OffsetOk, Visited);
}
--
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