llvm-6502/include/llvm
Hal Finkel dc3beb9017 Allow the register scavenger to spill multiple registers
This patch lets the register scavenger make use of multiple spill slots in
order to guarantee that it will be able to provide multiple registers
simultaneously.

To support this, the RS's API has changed slightly: setScavengingFrameIndex /
getScavengingFrameIndex have been replaced by addScavengingFrameIndex /
isScavengingFrameIndex / getScavengingFrameIndices.

In forthcoming commits, the PowerPC backend will use this capability in order
to implement the spilling of condition registers, and some special-purpose
registers, without relying on r0 being reserved. In some cases, spilling these
registers requires two GPRs: one for addressing and one to hold the value being
transferred.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177774 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22 23:32:27 +00:00
..
ADT
Analysis
Assembly
Bitcode
CodeGen Allow the register scavenger to spill multiple registers 2013-03-22 23:32:27 +00:00
Config
DebugInfo
ExecutionEngine
IR Revert r177675. This is language-specific and shouldn't be in the API. 2013-03-22 18:46:32 +00:00
MC
Object
Option
Support
TableGen
Target
Transforms
AutoUpgrade.h
CMakeLists.txt
DebugInfo.h Swap the DIFile in DILexicalBlockFile out for the raw name/directory pair 2013-03-22 20:18:46 +00:00
DIBuilder.h
GVMaterializer.h
InitializePasses.h
InstVisitor.h
LinkAllIR.h
LinkAllPasses.h
Linker.h
Pass.h
PassAnalysisSupport.h
PassManager.h
PassManagers.h
PassRegistry.h
PassSupport.h