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| author | Geoff Berry <gberry@codeaurora.org> | 2016-12-12 19:12:41 +0000 |
|---|---|---|
| committer | Geoff Berry <gberry@codeaurora.org> | 2016-12-12 19:12:41 +0000 |
| commit | d73420d591380d25c34dbc9a1a35c2751ad33b71 (patch) | |
| tree | b331b17520abb741070d2e66ff0f0b471cadc322 /llvm/lib/CodeGen/LiveRangeEdit.cpp | |
| parent | 94b25ecdc0af2025b65741df9938a20bd6a4a472 (diff) | |
| download | bcm5719-llvm-d73420d591380d25c34dbc9a1a35c2751ad33b71.tar.gz bcm5719-llvm-d73420d591380d25c34dbc9a1a35c2751ad33b71.zip | |
[LiveRangeEdit] Add assert string and descriptive comment.
llvm-svn: 289456
Diffstat (limited to 'llvm/lib/CodeGen/LiveRangeEdit.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/LiveRangeEdit.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/LiveRangeEdit.cpp b/llvm/lib/CodeGen/LiveRangeEdit.cpp index 88fed6212d1..918be476597 100644 --- a/llvm/lib/CodeGen/LiveRangeEdit.cpp +++ b/llvm/lib/CodeGen/LiveRangeEdit.cpp @@ -273,7 +273,9 @@ void LiveRangeEdit::eliminateDeadDef(MachineInstr *MI, ToShrinkSet &ToShrink, bool isOrigDef = false; unsigned Dest; if (VRM && MI->getOperand(0).isReg() && MI->getOperand(0).isDef()) { - assert(MI->getDesc().getNumDefs() == 1); + // It is assumed that callers of eliminateDeadDefs() will never pass in dead + // instructions with multiple virtual register defs. + assert(MI->getDesc().getNumDefs() == 1 && "Unexpected instruction with multiple defs."); Dest = MI->getOperand(0).getReg(); unsigned Original = VRM->getOriginal(Dest); LiveInterval &OrigLI = LIS.getInterval(Original); |
