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Diffstat (limited to 'lib/CodeGen/LiveIntervalAnalysis.cpp')
| -rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index 3d95827226..b1e202a273 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -304,6 +304,10 @@ void LiveIntervals::handleVirtualRegisterDef(MachineBasicBlock *mbb, // Make sure the first definition is not a partial redefinition. Add an // <imp-def> of the full register. + // FIXME: LiveIntervals shouldn't modify the code like this. Whoever + // created the machine instruction should annotate it with <undef> flags + // as needed. Then we can simply assert here. The REG_SEQUENCE lowering + // is the main suspect. if (MO.getSubReg()) { mi->addRegisterDefined(interval.reg); // Mark all defs of interval.reg on this instruction as reading <undef>. |