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Remove unused parameter. Also use the AttributeSet query methods instead of the Attribute query methods.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172852 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2013-01-18 21:50:24 +00:00
parent 8a53a8329f
commit 1a17bd21ff
3 changed files with 10 additions and 11 deletions
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3
include/llvm/CodeGen/Analysis.h
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@ -86,8 +86,7 @@ ISD::CondCode getICmpCondCode(ICmpInst::Predicate Pred);
/// between it and the return.
///
/// This function only tests target-independent requirements.
bool isInTailCallPosition(ImmutableCallSite CS, Attribute CalleeRetAttr,
const TargetLowering &TLI);
bool isInTailCallPosition(ImmutableCallSite CS, const TargetLowering &TLI);
} // End llvm namespace

15
lib/CodeGen/Analysis.cpp
View File

@ -265,8 +265,7 @@ static const Value *getNoopInput(const Value *V, const TargetLowering &TLI) {
/// between it and the return.
///
/// This function only tests target-independent requirements.
bool llvm::isInTailCallPosition(ImmutableCallSite CS, Attribute CalleeRetAttr,
const TargetLowering &TLI) {
bool llvm::isInTailCallPosition(ImmutableCallSite CS,const TargetLowering &TLI){
const Instruction *I = CS.getInstruction();
const BasicBlock *ExitBB = I->getParent();
const TerminatorInst *Term = ExitBB->getTerminator();
@ -312,14 +311,16 @@ bool llvm::isInTailCallPosition(ImmutableCallSite CS, Attribute CalleeRetAttr,
// Conservatively require the attributes of the call to match those of
// the return. Ignore noalias because it doesn't affect the call sequence.
const Function *F = ExitBB->getParent();
Attribute CallerRetAttr = F->getAttributes().getRetAttributes();
if (AttrBuilder(CalleeRetAttr).removeAttribute(Attribute::NoAlias) !=
AttrBuilder(CallerRetAttr).removeAttribute(Attribute::NoAlias))
AttributeSet CallerAttrs = F->getAttributes();
if (AttrBuilder(CallerAttrs, AttributeSet::ReturnIndex).
removeAttribute(Attribute::NoAlias) !=
AttrBuilder(CallerAttrs, AttributeSet::ReturnIndex).
removeAttribute(Attribute::NoAlias))
return false;
// It's not safe to eliminate the sign / zero extension of the return value.
if (CallerRetAttr.hasAttribute(Attribute::ZExt) ||
CallerRetAttr.hasAttribute(Attribute::SExt))
if (CallerAttrs.hasAttribute(AttributeSet::ReturnIndex, Attribute::ZExt) ||
CallerAttrs.hasAttribute(AttributeSet::ReturnIndex, Attribute::SExt))
return false;
// Otherwise, make sure the unmodified return value of I is the return value.

3
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
View File

@ -5277,8 +5277,7 @@ void SelectionDAGBuilder::LowerCallTo(ImmutableCallSite CS, SDValue Callee,
// Check if target-independent constraints permit a tail call here.
// Target-dependent constraints are checked within TLI.LowerCallTo.
if (isTailCall &&
!isInTailCallPosition(CS, CS.getAttributes().getRetAttributes(), TLI))
if (isTailCall && !isInTailCallPosition(CS, TLI))
isTailCall = false;
TargetLowering::