Have SPU backend use the external TCE scheduler, if the library is loaded as a
module.
Patch by Pekka Jääskeläinen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138037 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CellSPU/SPUTargetMachine.cpp b/lib/Target/CellSPU/SPUTargetMachine.cpp
index ea59a80..2c7c89e 100644
--- a/lib/Target/CellSPU/SPUTargetMachine.cpp
+++ b/lib/Target/CellSPU/SPUTargetMachine.cpp
@@ -17,6 +17,7 @@
#include "llvm/CodeGen/RegAllocRegistry.h"
#include "llvm/CodeGen/SchedulerRegistry.h"
#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Support/DynamicLibrary.h"
using namespace llvm;
@@ -59,6 +60,16 @@
bool SPUTargetMachine::
addPreEmitPass(PassManagerBase &PM, CodeGenOpt::Level OptLevel)
{
+
+ // load the TCE instruction scheduler, if available via
+ // loaded plugins
+ typedef llvm::FunctionPass* (*BuilderFunc)(const char*);
+ BuilderFunc schedulerCreator =
+ (BuilderFunc)llvm::sys::DynamicLibrary::SearchForAddressOfSymbol(
+ "createTCESchedulerPass");
+ if (schedulerCreator != NULL)
+ PM.add(schedulerCreator("cellspu"));
+
//align instructions with nops/lnops for dual issue
PM.add(createSPUNopFillerPass(*this));
return true;