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Add a hook for PBQP clients to run a custom pre-alloc pass to run prior to PBQP allocation. Patch by Arnaud Allard de Grandmaison.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133249 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames 2011-06-17 07:09:01 +00:00
parent d589099eec
commit 8d857660ce
2 changed files with 11 additions and 5 deletions
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3
include/llvm/CodeGen/RegAllocPBQP.h
View File

@ -161,7 +161,8 @@ namespace llvm {
PBQP::PBQPNum benefit);
};
FunctionPass* createPBQPRegisterAllocator(std::auto_ptr<PBQPBuilder> builder);
FunctionPass* createPBQPRegisterAllocator(std::auto_ptr<PBQPBuilder> builder,
char *customPassID=0);
}
#endif /* LLVM_CODEGEN_REGALLOCPBQP_H */

13
lib/CodeGen/RegAllocPBQP.cpp
View File

@ -84,8 +84,8 @@ public:
static char ID;
/// Construct a PBQP register allocator.
RegAllocPBQP(std::auto_ptr<PBQPBuilder> b)
: MachineFunctionPass(ID), builder(b) {
RegAllocPBQP(std::auto_ptr<PBQPBuilder> b, char *cPassID=0)
: MachineFunctionPass(ID), builder(b), customPassID(cPassID) {
initializeSlotIndexesPass(*PassRegistry::getPassRegistry());
initializeLiveIntervalsPass(*PassRegistry::getPassRegistry());
initializeRegisterCoalescerAnalysisGroup(*PassRegistry::getPassRegistry());
@ -122,6 +122,8 @@ private:
std::auto_ptr<PBQPBuilder> builder;
char *customPassID;
MachineFunction *mf;
const TargetMachine *tm;
const TargetRegisterInfo *tri;
@ -449,6 +451,8 @@ void RegAllocPBQP::getAnalysisUsage(AnalysisUsage &au) const {
au.addRequired<LiveIntervals>();
//au.addRequiredID(SplitCriticalEdgesID);
au.addRequired<RegisterCoalescer>();
if (customPassID)
au.addRequiredID(*customPassID);
au.addRequired<CalculateSpillWeights>();
au.addRequired<LiveStacks>();
au.addPreserved<LiveStacks>();
@ -702,8 +706,9 @@ bool RegAllocPBQP::runOnMachineFunction(MachineFunction &MF) {
}
FunctionPass* llvm::createPBQPRegisterAllocator(
std::auto_ptr<PBQPBuilder> builder) {
return new RegAllocPBQP(builder);
std::auto_ptr<PBQPBuilder> builder,
char *customPassID) {
return new RegAllocPBQP(builder, customPassID);
}
FunctionPass* llvm::createDefaultPBQPRegisterAllocator() {