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| author | Devang Patel <dpatel@apple.com> | 2011-08-12 18:01:34 +0000 |
|---|---|---|
| committer | Devang Patel <dpatel@apple.com> | 2011-08-12 18:01:34 +0000 |
| commit | 2e85b1bfa7412577dd61f21ea10a686d3685144b (patch) | |
| tree | fca4a383b6de6b905e32aa837b310c53f61f3237 /lib/CodeGen/LexicalScopes.cpp | |
| parent | 3f3570a38be37ca18c545bd1b4c89604ecaf7e31 (diff) | |
| download | llvm-2e85b1bfa7412577dd61f21ea10a686d3685144b.tar.gz llvm-2e85b1bfa7412577dd61f21ea10a686d3685144b.tar.bz2 llvm-2e85b1bfa7412577dd61f21ea10a686d3685144b.tar.xz | |
Provide fast path as Jakob suggested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137478 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LexicalScopes.cpp')
| -rw-r--r-- | lib/CodeGen/LexicalScopes.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/CodeGen/LexicalScopes.cpp b/lib/CodeGen/LexicalScopes.cpp index 676328446f..ae06a40703 100644 --- a/lib/CodeGen/LexicalScopes.cpp +++ b/lib/CodeGen/LexicalScopes.cpp @@ -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) { |