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Provide fast path as Jakob suggested.

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llvm-svn: 137478
This commit is contained in:
Devang Patel 2011-08-12 18:01:34 +00:00
parent a1df383bae
commit f54def9bad
1 changed files with 12 additions and 0 deletions
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12
lib/CodeGen/LexicalScopes.cpp
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@ -256,6 +256,13 @@ getMachineBasicBlocks(DebugLoc DL,
if (!Scope)
return;
if (Scope == CurrentFnLexicalScope) {
for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
I != E; ++I)
MBBs.insert(I);
return;
}
SmallVector<InsnRange, 4> &InsnRanges = Scope->getRanges();
for (SmallVector<InsnRange, 4>::iterator I = InsnRanges.begin(),
E = InsnRanges.end(); I != E; ++I) {
@ -270,6 +277,11 @@ bool LexicalScopes::dominates(DebugLoc DL, MachineBasicBlock *MBB) {
LexicalScope *Scope = getOrCreateLexicalScope(DL);
if (!Scope)
return false;
// Current function scope covers all basic blocks in the function.
if (Scope == CurrentFnLexicalScope && MBB->getParent() == MF)
return true;
bool Result = false;
for (MachineBasicBlock::iterator I = MBB->begin(), E = MBB->end();
I != E; ++I) {