From 1b38ec83f07d5801035567160008cd7cb99a5c1a Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Thu, 19 Jun 2008 01:21:26 +0000 Subject: [PATCH] Cosmetic changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52479 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/PHIElimination.cpp | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/lib/CodeGen/PHIElimination.cpp b/lib/CodeGen/PHIElimination.cpp index 4e2ed678e19..b50a008f53c 100644 --- a/lib/CodeGen/PHIElimination.cpp +++ b/lib/CodeGen/PHIElimination.cpp @@ -97,7 +97,7 @@ bool PNE::runOnMachineFunction(MachineFunction &Fn) { E = ImpDefs.end(); I != E; ++I) { MachineInstr *DefMI = *I; unsigned DefReg = DefMI->getOperand(0).getReg(); - if (MRI->use_begin(DefReg) == MRI->use_end()) + if (MRI->use_empty(DefReg)) DefMI->eraseFromParent(); } @@ -127,8 +127,10 @@ bool PNE::EliminatePHINodes(MachineFunction &MF, MachineBasicBlock &MBB) { return true; } +/// isSourceDefinedByImplicitDef - Return true if all sources of the phi node +/// are implicit_def's. static bool isSourceDefinedByImplicitDef(const MachineInstr *MPhi, - const MachineRegisterInfo *MRI) { + const MachineRegisterInfo *MRI) { for (unsigned i = 1; i != MPhi->getNumOperands(); i += 2) { unsigned SrcReg = MPhi->getOperand(i).getReg(); const MachineInstr *DefMI = MRI->getVRegDef(SrcReg); @@ -229,7 +231,7 @@ void PNE::LowerAtomicPHINode(MachineBasicBlock &MBB, // Find a safe location to insert the copy, this may be the first terminator // in the block (or end()). MachineBasicBlock::iterator InsertPos = opBlock.getFirstTerminator(); - + // Insert the copy. TII->copyRegToReg(opBlock, InsertPos, IncomingReg, SrcReg, RC, RC);