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| author | Owen Anderson <resistor@mac.com> | 2008-09-10 20:41:13 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2008-09-10 20:41:13 +0000 |
| commit | 7591130946662120b551be0b4d6977d88d9c0efe (patch) | |
| tree | 4aa8503fc58ca6bf9b48852e15c40c0e772fd534 /llvm/lib/CodeGen | |
| parent | 39d82f902aa716ddc9b4cc1ac32acf79b3fbe46c (diff) | |
| download | bcm5719-llvm-7591130946662120b551be0b4d6977d88d9c0efe.tar.gz bcm5719-llvm-7591130946662120b551be0b4d6977d88d9c0efe.zip | |
Fix a bug in the coalescer where it didn't check if a live interval existed before trying to manipulate it. This
was exposed by fast isel's handling of shifts on X86-64. With this, FreeBench/pcompress2 passes on X86-64 in fast isel.
llvm-svn: 56067
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp index cca891d7735..c6d4576e9c9 100644 --- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -464,7 +464,7 @@ bool SimpleRegisterCoalescing::ReMaterializeTrivialDef(LiveInterval &SrcInt, MachineOperand &MO = CopyMI->getOperand(i); if (MO.isReg() && MO.isImplicit()) NewMI->addOperand(MO); - if (MO.isDef()) { + if (MO.isDef() && li_->hasInterval(MO.getReg())) { unsigned Reg = MO.getReg(); DLR = li_->getInterval(Reg).getLiveRangeContaining(DefIdx); if (DLR && DLR->valno->copy == CopyMI) |
