From 2e3e5bf42742a7421b513829101501f2de6d2b02 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Mon, 8 Dec 2008 04:54:11 +0000 Subject: Move createVirtualRegister out-of-line. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60684 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/MachineRegisterInfo.cpp | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'lib/CodeGen/MachineRegisterInfo.cpp') diff --git a/lib/CodeGen/MachineRegisterInfo.cpp b/lib/CodeGen/MachineRegisterInfo.cpp index 5e20689e0f..e5148e74be 100644 --- a/lib/CodeGen/MachineRegisterInfo.cpp +++ b/lib/CodeGen/MachineRegisterInfo.cpp @@ -35,6 +35,24 @@ MachineRegisterInfo::~MachineRegisterInfo() { delete [] PhysRegUseDefLists; } +/// createVirtualRegister - Create and return a new virtual register in the +/// function with the specified register class. +/// +unsigned +MachineRegisterInfo::createVirtualRegister(const TargetRegisterClass *RegClass){ + assert(RegClass && "Cannot create register without RegClass!"); + // Add a reg, but keep track of whether the vector reallocated or not. + void *ArrayBase = VRegInfo.empty() ? 0 : &VRegInfo[0]; + VRegInfo.push_back(std::make_pair(RegClass, (MachineOperand*)0)); + + if (!((&VRegInfo[0] == ArrayBase || VRegInfo.size() == 1))) + // The vector reallocated, handle this now. + HandleVRegListReallocation(); + unsigned VR = getLastVirtReg(); + RegClass2VRegMap[RegClass->getID()].push_back(VR); + return VR; +} + /// HandleVRegListReallocation - We just added a virtual register to the /// VRegInfo info list and it reallocated. Update the use/def lists info /// pointers. -- cgit v1.2.3-70-g09d2