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-rw-r--r--lib/CodeGen/LiveRegMatrix.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/LiveRegMatrix.h b/lib/CodeGen/LiveRegMatrix.h
index 4c3e7d4782..019a5f5877 100644
--- a/lib/CodeGen/LiveRegMatrix.h
+++ b/lib/CodeGen/LiveRegMatrix.h
@@ -124,7 +124,8 @@ public:
/// Check for regmask interference only.
/// Return true if VirtReg crosses a regmask operand that clobbers PhysReg.
- bool checkRegMaskInterference(LiveInterval &VirtReg, unsigned PhysReg);
+ /// If PhysReg is null, check if VirtReg crosses any regmask operands.
+ bool checkRegMaskInterference(LiveInterval &VirtReg, unsigned PhysReg = 0);
/// Check for regunit interference only.
/// Return true if VirtReg overlaps a fixed assignment of one of PhysRegs's