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Fix PR5614: parts of a physical register def may be killed the rest.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90180 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-12-01 00:44:45 +00:00
parent d188dba149
commit a4025df42d
3 changed files with 95 additions and 3 deletions
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9
include/llvm/CodeGen/LiveVariables.h
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@ -163,8 +163,13 @@ private: // Intermediate data structures
SmallVector<unsigned, 4> &Defs);
void UpdatePhysRegDefs(MachineInstr *MI, SmallVector<unsigned, 4> &Defs);
/// FindLastPartialDef - Return the last partial def of the specified register.
/// Also returns the sub-registers that're defined by the instruction.
/// FindLastRefOrPartRef - Return the last reference or partial reference of
/// the specified register.
MachineInstr *FindLastRefOrPartRef(unsigned Reg);
/// FindLastPartialDef - Return the last partial def of the specified
/// register. Also returns the sub-registers that're defined by the
/// instruction.
MachineInstr *FindLastPartialDef(unsigned Reg,
SmallSet<unsigned,4> &PartDefRegs);