From eacbdabecf8c51d7af1c6469d2316576451ae71d Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Wed, 6 Apr 2016 10:03:47 +0200
Subject: TGSI: Use a machine-wide ConstantPool

Not really pretty, maybe add module wide constant pool functionality
to the Module class, and use that ?

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 lib/Target/TGSI/TGSI.h                 |  3 ++-
 lib/Target/TGSI/TGSIAsmPrinter.cpp     | 11 ++++++-----
 lib/Target/TGSI/TGSIPreEmitImmPass.cpp | 11 +++++++++--
 lib/Target/TGSI/TGSITargetMachine.cpp  |  5 +++--
 lib/Target/TGSI/TGSITargetMachine.h    |  3 +++
 5 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/lib/Target/TGSI/TGSI.h b/lib/Target/TGSI/TGSI.h
index 83a1644bc3a..c906c8f98ad 100644
--- a/lib/Target/TGSI/TGSI.h
+++ b/lib/Target/TGSI/TGSI.h
@@ -16,6 +16,7 @@
 #define TGSI_H
 
 #include "MCTargetDesc/TGSIMCTargetDesc.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Support/ErrorHandling.h"
@@ -27,7 +28,7 @@ namespace llvm {
    class TGSITargetMachine;
 
    FunctionPass *createTGSIISelDag(TGSITargetMachine &tm);
-   FunctionPass *createTGSIPreEmitImmPass();
+   FunctionPass *createTGSIPreEmitImmPass(MachineConstantPool &MCP);
 
    namespace tgsi {
       enum AddressSpace {
diff --git a/lib/Target/TGSI/TGSIAsmPrinter.cpp b/lib/Target/TGSI/TGSIAsmPrinter.cpp
index ec4b5a446ed..b6a4b4c8a5e 100644
--- a/lib/Target/TGSI/TGSIAsmPrinter.cpp
+++ b/lib/Target/TGSI/TGSIAsmPrinter.cpp
@@ -38,10 +38,11 @@ using namespace llvm;
 
 namespace {
    class TGSIAsmPrinter : public AsmPrinter {
+      unsigned cpi;
    public:
       explicit TGSIAsmPrinter(TargetMachine &TM,
                               std::unique_ptr<MCStreamer> Streamer)
-         : AsmPrinter(TM, std::move(Streamer)) {}
+         : AsmPrinter(TM, std::move(Streamer)), cpi(0) {}
 
       virtual const char *getPassName() const {
          return "TGSI Assembly Printer";
@@ -171,16 +172,16 @@ void TGSIAsmPrinter::EmitFunctionBodyEnd() {
 }
 
 void TGSIAsmPrinter::EmitConstantPool() {
-   const MachineConstantPool *MCP = MF->getConstantPool();
-   const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
+   TGSITargetMachine &TTM = static_cast<TGSITargetMachine &>(TM);
+   const std::vector<MachineConstantPoolEntry> &CP = TTM.MCP.getConstants();
 
    if (CP.empty()) return;
 
    MCTargetStreamer &TS = *OutStreamer->getTargetStreamer();
    TGSITargetStreamer &TTS = static_cast<TGSITargetStreamer &>(TS);
 
-   for (unsigned i = 0; i < CP.size(); i++)
-      TTS.EmitConstantPoolEntry(CP[i]);
+   while (cpi < CP.size())
+      TTS.EmitConstantPoolEntry(CP[cpi++]);
 }
 
 extern "C" void LLVMInitializeTGSIAsmPrinter() {
diff --git a/lib/Target/TGSI/TGSIPreEmitImmPass.cpp b/lib/Target/TGSI/TGSIPreEmitImmPass.cpp
index 55c86b8de9d..32c0cf82072 100644
--- a/lib/Target/TGSI/TGSIPreEmitImmPass.cpp
+++ b/lib/Target/TGSI/TGSIPreEmitImmPass.cpp
@@ -41,7 +41,6 @@ namespace {
 
 protected:
       bool processBlock(MachineFunction &MF, MachineBasicBlock &MBB) {
-         MachineConstantPool *MCP = MF.getConstantPool();
          bool Changed = false;
 
          for (MachineBasicBlock::iterator I = MBB.begin(); I != MBB.end(); I++) {
@@ -71,6 +70,8 @@ protected:
       }
 
 public:
+      MachineConstantPool *MCP;
+
       virtual bool doInitialization(Module &M) override {
          LCtx = &M.getContext();
          return false;
@@ -102,4 +103,10 @@ INITIALIZE_PASS(TGSIPreEmitImm, DEBUG_TYPE,
 char TGSIPreEmitImm::ID = 0;
 
 FunctionPass*
-llvm::createTGSIPreEmitImmPass() { return new TGSIPreEmitImm(); }
+llvm::createTGSIPreEmitImmPass(MachineConstantPool &MCP) {
+   TGSIPreEmitImm *pass = new TGSIPreEmitImm();
+
+   pass->MCP = &MCP;
+
+   return pass;
+}
diff --git a/lib/Target/TGSI/TGSITargetMachine.cpp b/lib/Target/TGSI/TGSITargetMachine.cpp
index 3279cdb0156..57a165b825a 100644
--- a/lib/Target/TGSI/TGSITargetMachine.cpp
+++ b/lib/Target/TGSI/TGSITargetMachine.cpp
@@ -38,7 +38,7 @@ namespace {
       }
 
       void addPreEmitPass() override {
-         addPass(createTGSIPreEmitImmPass(), false);
+         addPass(createTGSIPreEmitImmPass(getTGSITargetMachine().MCP), false);
       }
    };
 }
@@ -63,7 +63,8 @@ TGSITargetMachine::TGSITargetMachine(const Target &T, const Triple &TT,
    : LLVMTargetMachine(T, computeDataLayout(TT, CPU, Options),
                        TT, CPU, FS, Options, Reloc::Static, CM, OL),
      TLOF(make_unique<TGSITargetObjectFile>()),
-     Subtarget(TT, CPU, FS, *this) {
+     Subtarget(TT, CPU, FS, *this),
+     MCP(DL) {
    initAsmInfo();
 }
 
diff --git a/lib/Target/TGSI/TGSITargetMachine.h b/lib/Target/TGSI/TGSITargetMachine.h
index f12aeb00013..ce30ce1a87c 100644
--- a/lib/Target/TGSI/TGSITargetMachine.h
+++ b/lib/Target/TGSI/TGSITargetMachine.h
@@ -16,6 +16,7 @@
 
 #include "TGSISubtarget.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/Target/TargetMachine.h"
 
@@ -24,6 +25,8 @@ namespace llvm {
       std::unique_ptr<TargetLoweringObjectFile> TLOF;
       TGSISubtarget Subtarget;
    public:
+      MachineConstantPool MCP; /* TGSI uses a machine wide constantpool */
+
       TGSITargetMachine(const Target &T, const Triple &TT,
                         StringRef CPU, StringRef FS,
                         const TargetOptions &Options,
-- 
cgit v1.2.3