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Add EnableIPRA to TargetOptions, and move the cl::opt -enable-ipra to TargetMachine.cpp
Avoid exposing a cl::opt in a public header and instead promote this option in the API. Alternatively, we could land the cl::opt in CommandFlags.h so that it is available to every tool, but we would still have to find an option for clang. llvm-svn: 275348
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@ -16,11 +16,8 @@
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#include "llvm/Pass.h"
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#include "llvm/Support/CodeGen.h"
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#include "llvm/Support/CommandLine.h"
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#include <string>
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extern llvm::cl::opt<bool> UseIPRA;
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namespace llvm {
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class PassConfigImpl;
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@ -100,7 +100,8 @@ namespace llvm {
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DisableIntegratedAS(false), CompressDebugSections(false),
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RelaxELFRelocations(false), FunctionSections(false),
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DataSections(false), UniqueSectionNames(true), TrapUnreachable(false),
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EmulatedTLS(false), FloatABIType(FloatABI::Default),
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EmulatedTLS(false), EnableIPRA(false),
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FloatABIType(FloatABI::Default),
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AllowFPOpFusion(FPOpFusion::Standard), Reciprocals(TargetRecip()),
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JTType(JumpTable::Single), ThreadModel(ThreadModel::POSIX),
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EABIVersion(EABI::Default), DebuggerTuning(DebuggerKind::Default),
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@ -207,6 +208,9 @@ namespace llvm {
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/// function in the runtime library..
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unsigned EmulatedTLS : 1;
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/// This flag enables InterProcedural Register Allocation (IPRA).
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unsigned EnableIPRA : 1;
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/// FloatABIType - This setting is set by -float-abi=xxx option is specfied
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/// on the command line. This setting may either be Default, Soft, or Hard.
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/// Default selects the target's default behavior. Soft selects the ABI for
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@ -69,7 +69,7 @@ void TargetFrameLowering::determineCalleeSaves(MachineFunction &MF,
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// When interprocedural register allocation is enabled caller saved registers
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// are preferred over callee saved registers.
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if (UseIPRA && isSafeForNoCSROpt(MF.getFunction()))
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if (MF.getTarget().Options.EnableIPRA && isSafeForNoCSROpt(MF.getFunction()))
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return;
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// Get the callee saved register list...
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@ -124,10 +124,6 @@ static cl::opt<CFLAAType> UseCFLAA(
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"Enable both variants of CFL-AA"),
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clEnumValEnd));
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cl::opt<bool> UseIPRA("enable-ipra", cl::init(false), cl::Hidden,
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cl::desc("Enable interprocedural register allocation "
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"to reduce load/store at procedure calls."));
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/// Allow standard passes to be disabled by command line options. This supports
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/// simple binary flags that either suppress the pass or do nothing.
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/// i.e. -disable-mypass=false has no effect.
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@ -522,7 +518,7 @@ void TargetPassConfig::addISelPrepare() {
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addPreISel();
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// Force codegen to run according to the callgraph.
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if (UseIPRA)
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if (TM->Options.EnableIPRA)
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addPass(new DummyCGSCCPass);
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// Add both the safe stack and the stack protection passes: each of them will
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@ -561,7 +557,7 @@ void TargetPassConfig::addISelPrepare() {
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void TargetPassConfig::addMachinePasses() {
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AddingMachinePasses = true;
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if (UseIPRA)
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if (TM->Options.EnableIPRA)
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addPass(createRegUsageInfoPropPass());
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// Insert a machine instr printer pass after the specified pass.
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@ -649,7 +645,7 @@ void TargetPassConfig::addMachinePasses() {
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addPreEmitPass();
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if (UseIPRA)
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if (TM->Options.EnableIPRA)
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// Collect register usage information and produce a register mask of
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// clobbered registers, to be used to optimize call sites.
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addPass(createRegUsageInfoCollector());
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@ -31,6 +31,10 @@
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#include "llvm/Target/TargetSubtargetInfo.h"
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using namespace llvm;
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cl::opt<bool> EnableIPRA("enable-ipra", cl::init(false), cl::Hidden,
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cl::desc("Enable interprocedural register allocation "
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"to reduce load/store at procedure calls."));
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//---------------------------------------------------------------------------
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// TargetMachine Class
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//
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@ -40,7 +44,10 @@ TargetMachine::TargetMachine(const Target &T, StringRef DataLayoutString,
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const TargetOptions &Options)
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: TheTarget(T), DL(DataLayoutString), TargetTriple(TT), TargetCPU(CPU),
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TargetFS(FS), AsmInfo(nullptr), MRI(nullptr), MII(nullptr), STI(nullptr),
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RequireStructuredCFG(false), Options(Options) {}
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RequireStructuredCFG(false), Options(Options) {
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if (EnableIPRA.getNumOccurrences())
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this->Options.EnableIPRA = EnableIPRA;
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}
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TargetMachine::~TargetMachine() {
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delete AsmInfo;
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