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author | Dan Gohman <gohman@apple.com> | 2008-12-08 04:54:11 +0000 |
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committer | Dan Gohman <gohman@apple.com> | 2008-12-08 04:54:11 +0000 |
commit | 2e3e5bf42742a7421b513829101501f2de6d2b02 (patch) | |
tree | 91340e073919e4cf926b5c84b0872f1aa36aa744 /lib/CodeGen/MachineRegisterInfo.cpp | |
parent | c93ced5b34b50a622ee8e49d90592f03ac7ff992 (diff) | |
download | external_llvm-2e3e5bf42742a7421b513829101501f2de6d2b02.zip external_llvm-2e3e5bf42742a7421b513829101501f2de6d2b02.tar.gz external_llvm-2e3e5bf42742a7421b513829101501f2de6d2b02.tar.bz2 |
Move createVirtualRegister out-of-line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60684 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineRegisterInfo.cpp')
-rw-r--r-- | lib/CodeGen/MachineRegisterInfo.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineRegisterInfo.cpp b/lib/CodeGen/MachineRegisterInfo.cpp index 5e20689..e5148e7 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. |