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Teach the register scavenger to take subregs into account when finding a free register.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127049 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2011-03-05 00:20:19 +00:00
parent 515c67ee77
commit 27ea9999e8
2 changed files with 11 additions and 6 deletions
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2
include/llvm/CodeGen/RegisterScavenging.h
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@@ -100,7 +100,7 @@ public:
/// getRegsAvailable - Return all available registers in the register class
/// in Mask.
void getRegsAvailable(const TargetRegisterClass *RC, BitVector &Mask);
BitVector getRegsAvailable(const TargetRegisterClass *RC);
/// FindUnusedReg - Find a unused register of the specified register class.
/// Return 0 if none is found.