#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/CodeGen.h"
#include "llvm/Support/CommandLine.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::desc("Override default stack alignment"),
cl::init(0));
+cl::opt<bool>
+StackRealign("stackrealign",
+ cl::desc("Force align the stack to the minimum alignment"),
+ cl::init(false));
+
cl::opt<std::string>
TrapFuncName("trap-func", cl::Hidden,
cl::desc("Emit a call to trap function rather than a trap instruction"),
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));
cl::desc("Emit functions into separate sections"),
cl::init(false));
+cl::opt<bool> EmulatedTLS("emulated-tls",
+ cl::desc("Use emulated TLS model"),
+ cl::init(false));
+
+cl::opt<bool> UniqueSectionNames("unique-section-names",
+ cl::desc("Give unique names to every section"),
+ cl::init(true));
+
cl::opt<llvm::JumpTable::JumpTableType>
JTableType("jump-table-type",
cl::desc("Choose the type of Jump-Instruction Table for jumptable."),
"Create one table per unique function type."),
clEnumValEnd));
-cl::opt<bool>
-FCFI("fcfi",
- cl::desc("Apply forward-edge control-flow integrity"),
- cl::init(false));
-
-cl::opt<llvm::CFIntegrity>
-CFIType("cfi-type",
- cl::desc("Choose the type of Control-Flow Integrity check to add"),
- cl::init(CFIntegrity::Sub),
- cl::values(
- clEnumValN(CFIntegrity::Sub, "sub",
- "Subtract the pointer from the table base, then mask."),
- clEnumValN(CFIntegrity::Ror, "ror",
- "Use rotate to check the offset from a table base."),
- clEnumValN(CFIntegrity::Add, "add",
- "Mask out the high bits and add to an aligned base."),
- clEnumValEnd));
-
-cl::opt<bool>
-CFIEnforcing("cfi-enforcing",
- cl::desc("Enforce CFI or pass the violation to a function."),
- cl::init(false));
-
-// Note that this option is linked to the cfi-enforcing option above: if
-// cfi-enforcing is set, then the cfi-func-name option is entirely ignored. If
-// cfi-enforcing is false and no cfi-func-name is set, then a default function
-// will be generated that ignores all CFI violations. The expected signature for
-// functions called with CFI violations is
-//
-// void (i8*, i8*)
-//
-// The first pointer is a C string containing the name of the function in which
-// the violation occurs, and the second pointer is the pointer that violated
-// CFI.
-cl::opt<std::string>
-CFIFuncName("cfi-func-name", cl::desc("The name of the CFI function to call"),
- cl::init(""));
+cl::opt<llvm::EABI> EABIVersion(
+ "meabi", cl::desc("Set EABI type (default depends on triple):"),
+ cl::init(EABI::Default),
+ cl::values(clEnumValN(EABI::Default, "default",
+ "Triple default EABI version"),
+ clEnumValN(EABI::EABI4, "4", "EABI version 4"),
+ clEnumValN(EABI::EABI5, "5", "EABI version 5"),
+ clEnumValN(EABI::GNU, "gnu", "EABI GNU"), clEnumValEnd));
+
+cl::opt<DebuggerKind>
+DebuggerTuningOpt("debugger-tune",
+ cl::desc("Tune debug info for a particular debugger"),
+ cl::init(DebuggerKind::Default),
+ cl::values(
+ clEnumValN(DebuggerKind::GDB, "gdb", "gdb"),
+ clEnumValN(DebuggerKind::LLDB, "lldb", "lldb"),
+ clEnumValN(DebuggerKind::SCE, "sce",
+ "SCE targets (e.g. PS4)"),
+ clEnumValEnd));
// Common utility function tightly tied to the options listed here. Initializes
// a TargetOptions object with CodeGen flags and returns it.
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;
Options.FunctionSections = FunctionSections;
+ Options.UniqueSectionNames = UniqueSectionNames;
+ Options.EmulatedTLS = EmulatedTLS;
Options.MCOptions = InitMCTargetOptionsFromFlags();
Options.JTType = JTableType;
- Options.FCFI = FCFI;
- Options.CFIType = CFIType;
- Options.CFIEnforcing = CFIEnforcing;
- Options.CFIFuncName = CFIFuncName;
Options.ThreadModel = TMModel;
+ Options.EABIVersion = EABIVersion;
+ Options.DebuggerTuning = DebuggerTuningOpt;
return Options;
}
+static inline std::string getCPUStr() {
+ // If user asked for the 'native' CPU, autodetect here. If autodection fails,
+ // this will set the CPU to an empty string which tells the target to
+ // pick a basic default.
+ if (MCPU == "native")
+ return sys::getHostCPUName();
+
+ return MCPU;
+}
+
+static inline std::string getFeaturesStr() {
+ SubtargetFeatures Features;
+
+ // 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))
+ for (auto &F : HostFeatures)
+ Features.AddFeature(F.first(), F.second);
+ }
+
+ for (unsigned i = 0; i != MAttrs.size(); ++i)
+ Features.AddFeature(MAttrs[i]);
+
+ return Features.getString();
+}
+
+/// \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())
+ NewAttrs = NewAttrs.addAttribute(Ctx, AttributeSet::FunctionIndex,
+ "target-cpu", CPU);
+
+ if (!Features.empty())
+ 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 (StackRealign)
+ NewAttrs = NewAttrs.addAttribute(Ctx, AttributeSet::FunctionIndex,
+ "stackrealign");
+
+ 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);
+ }
+}
+
#endif
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