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| author | Cameron Zwarich <zwarich@apple.com> | 2010-12-29 03:52:51 +0000 |
|---|---|---|
| committer | Cameron Zwarich <zwarich@apple.com> | 2010-12-29 03:52:51 +0000 |
| commit | 458fd305d48d90487fdb9ae196f905e839584f40 (patch) | |
| tree | ce7b5a405c142f71a3d5f11daae082d47c21b03e /llvm/lib/CodeGen/StrongPHIElimination.cpp | |
| parent | 2ae93b2c9cbcc04405046121e2af93ee76943433 (diff) | |
| download | bcm5719-llvm-458fd305d48d90487fdb9ae196f905e839584f40.tar.gz bcm5719-llvm-458fd305d48d90487fdb9ae196f905e839584f40.zip | |
Add text explaining an assertion.
llvm-svn: 122617
Diffstat (limited to 'llvm/lib/CodeGen/StrongPHIElimination.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/StrongPHIElimination.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/StrongPHIElimination.cpp b/llvm/lib/CodeGen/StrongPHIElimination.cpp index 5713e6aed29..4749d8eca88 100644 --- a/llvm/lib/CodeGen/StrongPHIElimination.cpp +++ b/llvm/lib/CodeGen/StrongPHIElimination.cpp @@ -283,7 +283,9 @@ bool StrongPHIElimination::runOnMachineFunction(MachineFunction& MF) { LiveInterval& DestLI = LI->getInterval(DestReg); LiveInterval& NewLI = LI->getInterval(NewReg); - assert(DestLI.ranges.size() == 1); + assert(DestLI.ranges.size() == 1 + && "PHI destination copy's live interval should be a single live " + "range from the beginning of the BB to the copy instruction."); LiveRange* DestLR = DestLI.begin(); VNInfo* NewVNI = NewLI.getVNInfoAt(DestLR->start); if (!NewVNI) { |
