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inline isGEP away. 

llvm-svn: 84373
This commit is contained in:
Chris Lattner 2009-10-17 23:48:54 +00:00
parent 54279632f3
commit b2647b9e67
1 changed files with 6 additions and 10 deletions
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16
llvm/lib/Analysis/BasicAliasAnalysis.cpp
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@ -40,10 +40,6 @@ using namespace llvm;
// Useful predicates
//===----------------------------------------------------------------------===//
static const GEPOperator *isGEP(const Value *V) {
return dyn_cast<GEPOperator>(V);
}
static const Value *GetGEPOperands(const Value *V,
SmallVector<Value*, 16> &GEPOps) {
assert(GEPOps.empty() && "Expect empty list to populate!");
@ -53,7 +49,7 @@ static const Value *GetGEPOperands(const Value *V,
// Accumulate all of the chained indexes into the operand array
V = cast<User>(V)->getOperand(0);
while (const User *G = isGEP(V)) {
while (const GEPOperator *G = dyn_cast<GEPOperator>(V)) {
if (!isa<Constant>(GEPOps[0]) || isa<GlobalValue>(GEPOps[0]) ||
!cast<Constant>(GEPOps[0])->isNullValue())
break; // Don't handle folding arbitrary pointer offsets yet...
@ -402,7 +398,7 @@ BasicAliasAnalysis::aliasGEP(const Value *V1, unsigned V1Size,
// Note that we also handle chains of getelementptr instructions as well as
// constant expression getelementptrs here.
//
if (isGEP(V1) && isGEP(V2)) {
if (isa<GEPOperator>(V1) && isa<GEPOperator>(V2)) {
const User *GEP1 = cast<User>(V1);
const User *GEP2 = cast<User>(V2);
@ -421,13 +417,13 @@ BasicAliasAnalysis::aliasGEP(const Value *V1, unsigned V1Size,
// Drill down into the first non-gep value, to test for must-aliasing of
// the base pointers.
while (isGEP(GEP1->getOperand(0)) &&
while (isa<GEPOperator>(GEP1->getOperand(0)) &&
GEP1->getOperand(1) ==
Constant::getNullValue(GEP1->getOperand(1)->getType()))
GEP1 = cast<User>(GEP1->getOperand(0));
const Value *BasePtr1 = GEP1->getOperand(0);
while (isGEP(GEP2->getOperand(0)) &&
while (isa<GEPOperator>(GEP2->getOperand(0)) &&
GEP2->getOperand(1) ==
Constant::getNullValue(GEP2->getOperand(1)->getType()))
GEP2 = cast<User>(GEP2->getOperand(0));
@ -619,11 +615,11 @@ BasicAliasAnalysis::aliasCheck(const Value *V1, unsigned V1Size,
isNonEscapingLocalObject(O1) && O1 != O2)
return NoAlias;
if (!isGEP(V1) && isGEP(V2)) {
if (!isa<GEPOperator>(V1) && isa<GEPOperator>(V2)) {
std::swap(V1, V2);
std::swap(V1Size, V2Size);
}
if (isGEP(V1))
if (isa<GEPOperator>(V1))
return aliasGEP(V1, V1Size, V2, V2Size);
if (isa<PHINode>(V2) && !isa<PHINode>(V1)) {