From 0c8382ce9a96e36325b17d242fd1af16564d8a85 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 9 Apr 2009 16:50:43 +0000 Subject: reg0 references are not real registers. This fixes a crash on the attached testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68712 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/MachineInstr.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib/CodeGen/MachineInstr.cpp') diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index 965c2a2c5d..ade8683ec7 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/lib/CodeGen/MachineInstr.cpp @@ -739,7 +739,7 @@ bool MachineInstr::isRegReDefinedByTwoAddr(unsigned DefIdx) const{ bool MachineInstr::isRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx){ if (getOpcode() == TargetInstrInfo::INLINEASM) { const MachineOperand &MO = getOperand(UseOpIdx); - if (!MO.isReg() || !MO.isUse()) + if (!MO.isReg() || !MO.isUse() || MO.getReg() == 0) return false; assert(UseOpIdx > 0); const MachineOperand &UFMO = getOperand(UseOpIdx-1); -- cgit v1.2.3-18-g5258