From 1cf8b0f2a5435d8444b6cc7d4a27eef424398273 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Tue, 14 Feb 2012 23:49:37 +0000 Subject: Handle regmasks in findRegisterDefOperandIdx(). Only accept register masks when looking for an 'overlapping' def. When Overlap is not set, the function searches for a proper definition of Reg. This means MI->modifiesRegister() considers register masks, but MI->definesRegister() doesn't. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150529 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/MachineInstr.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'lib/CodeGen/MachineInstr.cpp') diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index 0a657341ac..ff32a66b14 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/lib/CodeGen/MachineInstr.cpp @@ -1045,6 +1045,10 @@ MachineInstr::findRegisterDefOperandIdx(unsigned Reg, bool isDead, bool Overlap, bool isPhys = TargetRegisterInfo::isPhysicalRegister(Reg); for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { const MachineOperand &MO = getOperand(i); + // Accept regmask operands when Overlap is set. + // Ignore them when looking for a specific def operand (Overlap == false). + if (isPhys && Overlap && MO.isRegMask() && MO.clobbersPhysReg(Reg)) + return i; if (!MO.isReg() || !MO.isDef()) continue; unsigned MOReg = MO.getReg(); -- cgit v1.2.3-70-g09d2