diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp index e616d3536fe..a859f6e0745 100644 --- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -1685,9 +1685,11 @@ bool SimpleRegisterCoalescing::runOnMachineFunction(MachineFunction &fn) { DoDelete = false; if (MI->allDefsAreDead()) { - LiveInterval &li = li_->getInterval(SrcReg); - if (!ShortenDeadCopySrcLiveRange(li, MI)) - ShortenDeadCopyLiveRange(li, MI); + if (li_->hasInterval(SrcReg)) { + LiveInterval &li = li_->getInterval(SrcReg); + if (!ShortenDeadCopySrcLiveRange(li, MI)) + ShortenDeadCopyLiveRange(li, MI); + } DoDelete = true; } if (!DoDelete) { |
