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-rw-r--r--lib/CodeGen/LLVMTargetMachine.cpp96
1 files changed, 47 insertions, 49 deletions
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp
index f985af8ba83e..80ecc224810c 100644
--- a/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/lib/CodeGen/LLVMTargetMachine.cpp
@@ -27,16 +27,18 @@
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
-#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
namespace llvm {
@@ -55,8 +57,12 @@ static cl::opt<bool> DisableCodePlace("disable-code-place", cl::Hidden,
cl::desc("Disable code placement"));
static cl::opt<bool> DisableSSC("disable-ssc", cl::Hidden,
cl::desc("Disable Stack Slot Coloring"));
+static cl::opt<bool> DisableMachineDCE("disable-machine-dce", cl::Hidden,
+ cl::desc("Disable Machine Dead Code Elimination"));
static cl::opt<bool> DisableMachineLICM("disable-machine-licm", cl::Hidden,
cl::desc("Disable Machine LICM"));
+static cl::opt<bool> DisableMachineCSE("disable-machine-cse", cl::Hidden,
+ cl::desc("Disable Machine Common Subexpression Elimination"));
static cl::opt<bool> DisablePostRAMachineLICM("disable-postra-machine-licm",
cl::Hidden,
cl::desc("Disable Machine LICM"));
@@ -103,20 +109,17 @@ EnableFastISelOption("fast-isel", cl::Hidden,
cl::desc("Enable the \"fast\" instruction selector"));
LLVMTargetMachine::LLVMTargetMachine(const Target &T, StringRef Triple,
- StringRef CPU, StringRef FS)
+ StringRef CPU, StringRef FS,
+ Reloc::Model RM, CodeModel::Model CM)
: TargetMachine(T, Triple, CPU, FS) {
+ CodeGenInfo = T.createMCCodeGenInfo(Triple, RM, CM);
AsmInfo = T.createMCAsmInfo(Triple);
-}
-
-// Set the default code model for the JIT for a generic target.
-// FIXME: Is small right here? or .is64Bit() ? Large : Small?
-void LLVMTargetMachine::setCodeModelForJIT() {
- setCodeModel(CodeModel::Small);
-}
-
-// Set the default code model for static compilation for a generic target.
-void LLVMTargetMachine::setCodeModelForStatic() {
- setCodeModel(CodeModel::Small);
+ // TargetSelect.h moved to a different directory between LLVM 2.9 and 3.0,
+ // and if the old one gets included then MCAsmInfo will be NULL and
+ // we'll crash later.
+ // Provide the user with a useful error message about what's wrong.
+ assert(AsmInfo && "MCAsmInfo not initialized."
+ "Make sure you include the correct TargetSelect.h!");
}
bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
@@ -134,21 +137,22 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
Context->setAllowTemporaryLabels(false);
const MCAsmInfo &MAI = *getMCAsmInfo();
+ const MCSubtargetInfo &STI = getSubtarget<MCSubtargetInfo>();
OwningPtr<MCStreamer> AsmStreamer;
switch (FileType) {
default: return true;
case CGFT_AssemblyFile: {
MCInstPrinter *InstPrinter =
- getTarget().createMCInstPrinter(MAI.getAssemblerDialect(), MAI);
+ getTarget().createMCInstPrinter(MAI.getAssemblerDialect(), MAI, STI);
// Create a code emitter if asked to show the encoding.
MCCodeEmitter *MCE = 0;
- TargetAsmBackend *TAB = 0;
+ MCAsmBackend *MAB = 0;
if (ShowMCEncoding) {
const MCSubtargetInfo &STI = getSubtarget<MCSubtargetInfo>();
- MCE = getTarget().createCodeEmitter(*getInstrInfo(), STI, *Context);
- TAB = getTarget().createAsmBackend(getTargetTriple());
+ MCE = getTarget().createMCCodeEmitter(*getInstrInfo(), STI, *Context);
+ MAB = getTarget().createMCAsmBackend(getTargetTriple());
}
MCStreamer *S = getTarget().createAsmStreamer(*Context, Out,
@@ -156,7 +160,7 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
hasMCUseLoc(),
hasMCUseCFI(),
InstPrinter,
- MCE, TAB,
+ MCE, MAB,
ShowMCInst);
AsmStreamer.reset(S);
break;
@@ -164,17 +168,16 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
case CGFT_ObjectFile: {
// Create the code emitter for the target if it exists. If not, .o file
// emission fails.
- const MCSubtargetInfo &STI = getSubtarget<MCSubtargetInfo>();
- MCCodeEmitter *MCE = getTarget().createCodeEmitter(*getInstrInfo(), STI,
- *Context);
- TargetAsmBackend *TAB = getTarget().createAsmBackend(getTargetTriple());
- if (MCE == 0 || TAB == 0)
+ MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(*getInstrInfo(), STI,
+ *Context);
+ MCAsmBackend *MAB = getTarget().createMCAsmBackend(getTargetTriple());
+ if (MCE == 0 || MAB == 0)
return true;
- AsmStreamer.reset(getTarget().createObjectStreamer(getTargetTriple(),
- *Context, *TAB, Out, MCE,
- hasMCRelaxAll(),
- hasMCNoExecStack()));
+ AsmStreamer.reset(getTarget().createMCObjectStreamer(getTargetTriple(),
+ *Context, *MAB, Out,
+ MCE, hasMCRelaxAll(),
+ hasMCNoExecStack()));
AsmStreamer.get()->InitSections();
break;
}
@@ -198,8 +201,6 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
PM.add(Printer);
- // Make sure the code model is set.
- setCodeModelForStatic();
PM.add(createGCInfoDeleter());
return false;
}
@@ -214,9 +215,6 @@ bool LLVMTargetMachine::addPassesToEmitMachineCode(PassManagerBase &PM,
JITCodeEmitter &JCE,
CodeGenOpt::Level OptLevel,
bool DisableVerify) {
- // Make sure the code model is set.
- setCodeModelForJIT();
-
// Add common CodeGen passes.
MCContext *Ctx = 0;
if (addCommonCodeGenPasses(PM, OptLevel, DisableVerify, Ctx))
@@ -248,16 +246,16 @@ bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM,
// Create the code emitter for the target if it exists. If not, .o file
// emission fails.
const MCSubtargetInfo &STI = getSubtarget<MCSubtargetInfo>();
- MCCodeEmitter *MCE = getTarget().createCodeEmitter(*getInstrInfo(),STI, *Ctx);
- TargetAsmBackend *TAB = getTarget().createAsmBackend(getTargetTriple());
- if (MCE == 0 || TAB == 0)
+ MCCodeEmitter *MCE = getTarget().createMCCodeEmitter(*getInstrInfo(),STI, *Ctx);
+ MCAsmBackend *MAB = getTarget().createMCAsmBackend(getTargetTriple());
+ if (MCE == 0 || MAB == 0)
return true;
OwningPtr<MCStreamer> AsmStreamer;
- AsmStreamer.reset(getTarget().createObjectStreamer(getTargetTriple(), *Ctx,
- *TAB, Out, MCE,
- hasMCRelaxAll(),
- hasMCNoExecStack()));
+ AsmStreamer.reset(getTarget().createMCObjectStreamer(getTargetTriple(), *Ctx,
+ *MAB, Out, MCE,
+ hasMCRelaxAll(),
+ hasMCNoExecStack()));
AsmStreamer.get()->InitSections();
// Create the AsmPrinter, which takes ownership of AsmStreamer if successful.
@@ -270,9 +268,6 @@ bool LLVMTargetMachine::addPassesToEmitMC(PassManagerBase &PM,
PM.add(Printer);
- // Make sure the code model is set.
- setCodeModelForJIT();
-
return false; // success!
}
@@ -369,8 +364,9 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM,
// Install a MachineModuleInfo class, which is an immutable pass that holds
// all the per-module stuff we're generating, including MCContext.
- TargetAsmInfo *TAI = new TargetAsmInfo(*this);
- MachineModuleInfo *MMI = new MachineModuleInfo(*getMCAsmInfo(), TAI);
+ MachineModuleInfo *MMI = new MachineModuleInfo(*getMCAsmInfo(),
+ *getRegisterInfo(),
+ &getTargetLowering()->getObjFileLowering());
PM.add(MMI);
OutContext = &MMI->getContext(); // Return the MCContext specifically by-ref.
@@ -412,12 +408,14 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM,
// there is one known exception: lowered code for arguments that are only
// used by tail calls, where the tail calls reuse the incoming stack
// arguments directly (see t11 in test/CodeGen/X86/sibcall.ll).
- PM.add(createDeadMachineInstructionElimPass());
+ if (!DisableMachineDCE)
+ PM.add(createDeadMachineInstructionElimPass());
printAndVerify(PM, "After codegen DCE pass");
if (!DisableMachineLICM)
PM.add(createMachineLICMPass());
- PM.add(createMachineCSEPass());
+ if (!DisableMachineCSE)
+ PM.add(createMachineCSEPass());
if (!DisableMachineSink)
PM.add(createMachineSinkingPass());
printAndVerify(PM, "After Machine LICM, CSE and Sinking passes");
@@ -452,8 +450,8 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM,
if (addPostRegAlloc(PM, OptLevel))
printAndVerify(PM, "After PostRegAlloc passes");
- PM.add(createLowerSubregsPass());
- printAndVerify(PM, "After LowerSubregs");
+ PM.add(createExpandPostRAPseudosPass());
+ printAndVerify(PM, "After ExpandPostRAPseudos");
// Insert prolog/epilog code. Eliminate abstract frame index references...
PM.add(createPrologEpilogCodeInserter());
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 05:18:07 +0000