#ifndef LLVM_CODEGEN_COMMANDFLAGS_H
#define LLVM_CODEGEN_COMMANDFLAGS_H
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/MCTargetOptionsCommandFlags.h"
#include "llvm//MC/SubtargetFeature.h"
#include "llvm/Support/Host.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
+#include "llvm/Target/TargetRecip.h"
#include <string>
using namespace llvm;
cl::desc("Force codegen to assume rounding mode can change dynamically"),
cl::init(false));
-cl::opt<bool>
-GenerateSoftFloatCalls("soft-float",
- cl::desc("Generate software floating point library calls"),
- cl::init(false));
-
cl::opt<llvm::FloatABI::ABIType>
FloatABIForCalls("float-abi",
cl::desc("Choose float ABI type"),
clEnumValN(FPOpFusion::Standard, "on",
"Only fuse 'blessed' FP ops."),
clEnumValN(FPOpFusion::Strict, "off",
- "Only fuse FP ops when the result won't be effected."),
+ "Only fuse FP ops when the result won't be affected."),
clEnumValEnd));
+cl::list<std::string>
+ReciprocalOps("recip",
+ cl::CommaSeparated,
+ cl::desc("Choose reciprocal operation types and parameters."),
+ cl::value_desc("all,none,default,divf,!vec-sqrtd,vec-divd:0,sqrt:9..."));
+
cl::opt<bool>
DontPlaceZerosInBSS("nozero-initialized-in-bss",
cl::desc("Don't place zero-initialized symbols into bss section"),
cl::value_desc("pass-name"),
cl::init(""));
+cl::opt<std::string>
+ RunPass("run-pass", cl::desc("Run compiler only for one specific pass"),
+ cl::value_desc("pass-name"), cl::init(""));
+
cl::opt<bool> DataSections("data-sections",
cl::desc("Emit data into separate sections"),
cl::init(false));
static inline TargetOptions InitTargetOptionsFromCodeGenFlags() {
TargetOptions Options;
Options.LessPreciseFPMADOption = EnableFPMAD;
- Options.NoFramePointerElim = DisableFPElim;
Options.AllowFPOpFusion = FuseFPOps;
+ Options.Reciprocals = TargetRecip(ReciprocalOps);
Options.UnsafeFPMath = EnableUnsafeFPMath;
Options.NoInfsFPMath = EnableNoInfsFPMath;
Options.NoNaNsFPMath = EnableNoNaNsFPMath;
Options.HonorSignDependentRoundingFPMathOption =
EnableHonorSignDependentRoundingFPMath;
- Options.UseSoftFloat = GenerateSoftFloatCalls;
if (FloatABIForCalls != FloatABI::Default)
Options.FloatABIType = FloatABIForCalls;
Options.NoZerosInBSS = DontPlaceZerosInBSS;
Options.GuaranteedTailCallOpt = EnableGuaranteedTailCallOpt;
- Options.DisableTailCalls = DisableTailCalls;
Options.StackAlignmentOverride = OverrideStackAlignment;
- Options.TrapFuncName = TrapFuncName;
Options.PositionIndependentExecutable = EnablePIE;
Options.UseInitArray = !UseCtors;
Options.DataSections = DataSections;
// If user asked for the 'native' CPU, we need to autodetect features.
// This is necessary for x86 where the CPU might not support all the
// features the autodetected CPU name lists in the target. For example,
+ // not all Sandybridge processors support AVX.
if (MCPU == "native") {
StringMap<bool> HostFeatures;
if (sys::getHostCPUFeatures(HostFeatures))
return Features.getString();
}
-static inline void overrideFunctionAttributes(StringRef CPU, StringRef Features,
- Module &M) {
+/// \brief Set function attributes of functions in Module M based on CPU,
+/// Features, and command line flags.
+static inline void setFunctionAttributes(StringRef CPU, StringRef Features,
+ Module &M) {
for (auto &F : M) {
+ auto &Ctx = F.getContext();
+ AttributeSet Attrs = F.getAttributes(), NewAttrs;
+
if (!CPU.empty())
- llvm::overrideFunctionAttribute("target-cpu", CPU, F);
+ NewAttrs = NewAttrs.addAttribute(Ctx, AttributeSet::FunctionIndex,
+ "target-cpu", CPU);
if (!Features.empty())
- llvm::overrideFunctionAttribute("target-features", Features, F);
+ NewAttrs = NewAttrs.addAttribute(Ctx, AttributeSet::FunctionIndex,
+ "target-features", Features);
+
+ if (DisableFPElim.getNumOccurrences() > 0)
+ NewAttrs = NewAttrs.addAttribute(Ctx, AttributeSet::FunctionIndex,
+ "no-frame-pointer-elim",
+ DisableFPElim ? "true" : "false");
+
+ if (DisableTailCalls.getNumOccurrences() > 0)
+ NewAttrs = NewAttrs.addAttribute(Ctx, AttributeSet::FunctionIndex,
+ "disable-tail-calls",
+ toStringRef(DisableTailCalls));
+
+ if (TrapFuncName.getNumOccurrences() > 0)
+ for (auto &B : F)
+ for (auto &I : B)
+ if (auto *Call = dyn_cast<CallInst>(&I))
+ if (const auto *F = Call->getCalledFunction())
+ if (F->getIntrinsicID() == Intrinsic::debugtrap ||
+ F->getIntrinsicID() == Intrinsic::trap)
+ Call->addAttribute(llvm::AttributeSet::FunctionIndex,
+ "trap-func-name", TrapFuncName);
+
+ // Let NewAttrs override Attrs.
+ NewAttrs = Attrs.addAttributes(Ctx, AttributeSet::FunctionIndex, NewAttrs);
+ F.setAttributes(NewAttrs);
}
}