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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-06 19:31:19 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-06 19:31:19 +0000 |
| commit | 6212f9a304d7f8061c87920d39bddbc19afecb0c (patch) | |
| tree | 4a95cd909db45df4fcea5840884438fdd5079688 /lib/CodeGen/LiveDebugVariables.cpp | |
| parent | 5d754bfa320c558cbebded328454b75134f2cfee (diff) | |
| download | llvm-6212f9a304d7f8061c87920d39bddbc19afecb0c.tar.gz llvm-6212f9a304d7f8061c87920d39bddbc19afecb0c.tar.bz2 llvm-6212f9a304d7f8061c87920d39bddbc19afecb0c.tar.xz | |
Iterate backwards over debug locations when splitting them so they can be safely erased.
This should unbreak dragonegg-i386-linux and build-self-4-mingw32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131007 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveDebugVariables.cpp')
| -rw-r--r-- | lib/CodeGen/LiveDebugVariables.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/LiveDebugVariables.cpp b/lib/CodeGen/LiveDebugVariables.cpp index 41bf87fc5d..783a7e1ded 100644 --- a/lib/CodeGen/LiveDebugVariables.cpp +++ b/lib/CodeGen/LiveDebugVariables.cpp @@ -795,7 +795,10 @@ UserValue::splitLocation(unsigned OldLocNo, ArrayRef<LiveInterval*> NewRegs) { bool UserValue::splitRegister(unsigned OldReg, ArrayRef<LiveInterval*> NewRegs) { bool DidChange = false; - for (unsigned LocNo = 0, E = locations.size(); LocNo != E; ++LocNo) { + // Split locations referring to OldReg. Iterate backwards so splitLocation can + // safely erase unuused locations. + for (unsigned i = locations.size(); i ; --i) { + unsigned LocNo = i-1; const MachineOperand *Loc = &locations[LocNo]; if (!Loc->isReg() || Loc->getReg() != OldReg) continue; |