From 843ee2e6a46b2b2d74a84c2eea68dec35cb359cc Mon Sep 17 00:00:00 2001
From: Andrew Trick <atrick@apple.com>
Date: Fri, 3 Feb 2012 05:12:41 +0000
Subject: Added TargetPassConfig. The first little step toward configuring
 codegen passes.

Allows command line overrides to be centralized in LLVMTargetMachine.cpp.
LLVMTargetMachine can intercept common passes and give precedence to command line overrides.
Allows adding "internal" target configuration options without touching TargetOptions.
Encapsulates the PassManager.
Provides a good point to initialize all CodeGen passes so that Pass ID's can be used in APIs.
Allows modifying the target configuration hooks without rebuilding the world.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149672 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/CellSPU/SPUTargetMachine.cpp | 33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

(limited to 'lib/Target/CellSPU/SPUTargetMachine.cpp')

diff --git a/lib/Target/CellSPU/SPUTargetMachine.cpp b/lib/Target/CellSPU/SPUTargetMachine.cpp
index 1e922a4efd..83e22f624c 100644
--- a/lib/Target/CellSPU/SPUTargetMachine.cpp
+++ b/lib/Target/CellSPU/SPUTargetMachine.cpp
@@ -21,7 +21,7 @@
 
 using namespace llvm;
 
-extern "C" void LLVMInitializeCellSPUTarget() { 
+extern "C" void LLVMInitializeCellSPUTarget() {
   // Register the target.
   RegisterTargetMachine<SPUTargetMachine> X(TheCellSPUTarget);
 }
@@ -51,15 +51,36 @@ SPUTargetMachine::SPUTargetMachine(const Target &T, StringRef TT,
 // Pass Pipeline Configuration
 //===----------------------------------------------------------------------===//
 
-bool SPUTargetMachine::addInstSelector(PassManagerBase &PM) {
+namespace {
+/// SPU Code Generator Pass Configuration Options.
+class SPUPassConfig : public TargetPassConfig {
+public:
+  SPUPassConfig(SPUTargetMachine *TM, PassManagerBase &PM,
+                bool DisableVerifyFlag)
+    : TargetPassConfig(TM, PM, DisableVerifyFlag) {}
+
+  SPUTargetMachine &getSPUTargetMachine() const {
+    return getTM<SPUTargetMachine>();
+  }
+
+  virtual bool addInstSelector();
+  virtual bool addPreEmitPass();
+};
+} // namespace
+
+TargetPassConfig *SPUTargetMachine::createPassConfig(PassManagerBase &PM,
+                                                     bool DisableVerify) {
+  return new SPUPassConfig(this, PM, DisableVerify);
+}
+
+bool SPUPassConfig::addInstSelector() {
   // Install an instruction selector.
-  PM.add(createSPUISelDag(*this));
+  PM.add(createSPUISelDag(getSPUTargetMachine()));
   return false;
 }
 
 // passes to run just before printing the assembly
-bool SPUTargetMachine::
-addPreEmitPass(PassManagerBase &PM) {
+bool SPUPassConfig::addPreEmitPass() {
   // load the TCE instruction scheduler, if available via
   // loaded plugins
   typedef llvm::FunctionPass* (*BuilderFunc)(const char*);
@@ -70,6 +91,6 @@ addPreEmitPass(PassManagerBase &PM) {
       PM.add(schedulerCreator("cellspu"));
 
   //align instructions with nops/lnops for dual issue
-  PM.add(createSPUNopFillerPass(*this));
+  PM.add(createSPUNopFillerPass(getSPUTargetMachine()));
   return true;
 }
-- 
cgit v1.2.3