From dd219d06c29793ba03a45f7f08ca844c9f1418f4 Mon Sep 17 00:00:00 2001 From: Tim Northover Date: Tue, 20 Nov 2012 09:56:11 +0000 Subject: Fix physical register liveness calculations: + Take account of clobbers + Give outputs priority over inputs since they happen later. llvm-svn: 168360 --- llvm/lib/CodeGen/MachineInstrBundle.cpp | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'llvm/lib/CodeGen/MachineInstrBundle.cpp') diff --git a/llvm/lib/CodeGen/MachineInstrBundle.cpp b/llvm/lib/CodeGen/MachineInstrBundle.cpp index 1f7fbfc719b..70f97dedaaa 100644 --- a/llvm/lib/CodeGen/MachineInstrBundle.cpp +++ b/llvm/lib/CodeGen/MachineInstrBundle.cpp @@ -281,7 +281,7 @@ MachineOperandIteratorBase::PhysRegInfo MachineOperandIteratorBase::analyzePhysReg(unsigned Reg, const TargetRegisterInfo *TRI) { bool AllDefsDead = true; - PhysRegInfo PRI = {false, false, false, false, false, false, false}; + PhysRegInfo PRI = {false, false, false, false, false, false}; assert(TargetRegisterInfo::isPhysicalRegister(Reg) && "analyzePhysReg not given a physical register!"); @@ -305,7 +305,9 @@ MachineOperandIteratorBase::analyzePhysReg(unsigned Reg, // Reg or a super-reg is read, and perhaps killed also. PRI.Reads = true; PRI.Kills = MO.isKill(); - } if (IsRegOrOverlapping && MO.readsReg()) { + } + + if (IsRegOrOverlapping && MO.readsReg()) { PRI.ReadsOverlap = true;// Reg or an overlapping register is read. } -- cgit v1.2.3