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maintain LiveIn when splitting blocks (register scavenging needs it)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35226 91177308-0d34-0410-b5e6-96231b3b80d8
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Dale Johannesen
2007-03-20 21:35:06 +00:00
parent cbdfb8a9d5
commit 69cb9b78f1
3 changed files with 32 additions and 1 deletions
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3
include/llvm/CodeGen/RegisterScavenging.h
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@@ -91,6 +91,9 @@ public:
bool isUsed(unsigned Reg) const { return !RegStates[Reg]; }
bool isUnused(unsigned Reg) const { return RegStates[Reg]; }
/// getRegsUsed - return all registers currently in use in used.
void getRegsUsed(BitVector &used, bool includeReserved);
/// setUsed / setUnused - Mark the state of one or a number of registers.
///
void setUsed(unsigned Reg) { RegStates.reset(Reg); }