#ifndef LLVM_TARGET_TARGETOPTIONS_H
#define LLVM_TARGET_TARGETOPTIONS_H
+#include "llvm/MC/MCTargetOptions.h"
#include <string>
namespace llvm {
// Possible float ABI settings. Used with FloatABIType in TargetOptions.h.
namespace FloatABI {
enum ABIType {
- Default, // Target-specific (either soft or hard depending on triple, etc).
+ Default, // Target-specific (either soft or hard depending on triple,etc).
Soft, // Soft float.
Hard // Hard float.
};
};
}
+ namespace JumpTable {
+ enum JumpTableType {
+ Single, // Use a single table for all indirect jumptable calls.
+ Arity, // Use one table per number of function parameters.
+ Simplified, // Use one table per function type, with types projected
+ // into 4 types: pointer to non-function, struct,
+ // primitive, and function pointer.
+ Full // Use one table per unique function type
+ };
+ }
+
+ namespace ThreadModel {
+ enum Model {
+ POSIX, // POSIX Threads
+ Single // Single Threaded Environment
+ };
+ }
+
+ enum class CFIntegrity {
+ Sub, // Use subtraction-based checks.
+ Ror, // Use rotation-based checks.
+ Add // Use addition-based checks. This depends on having
+ // sufficient alignment in the code and is usually not
+ // feasible.
+ };
+
class TargetOptions {
public:
TargetOptions()
: PrintMachineCode(false), NoFramePointerElim(false),
- NoFramePointerElimNonLeaf(false), LessPreciseFPMADOption(false),
- UnsafeFPMath(false), NoInfsFPMath(false),
- NoNaNsFPMath(false), HonorSignDependentRoundingFPMathOption(false),
- UseSoftFloat(false), NoZerosInBSS(false), JITExceptionHandling(false),
- JITEmitDebugInfo(false), JITEmitDebugInfoToDisk(false),
- GuaranteedTailCallOpt(false), DisableTailCalls(false),
- StackAlignmentOverride(0), RealignStack(true), EnableFastISel(false),
- PositionIndependentExecutable(false), EnableSegmentedStacks(false),
- UseInitArray(false), TrapFuncName(""), FloatABIType(FloatABI::Default),
- AllowFPOpFusion(FPOpFusion::Standard)
- {}
+ LessPreciseFPMADOption(false), UnsafeFPMath(false),
+ NoInfsFPMath(false), NoNaNsFPMath(false),
+ HonorSignDependentRoundingFPMathOption(false), UseSoftFloat(false),
+ NoZerosInBSS(false), JITEmitDebugInfo(false),
+ JITEmitDebugInfoToDisk(false), GuaranteedTailCallOpt(false),
+ DisableTailCalls(false), StackAlignmentOverride(0),
+ EnableFastISel(false), PositionIndependentExecutable(false),
+ UseInitArray(false), DisableIntegratedAS(false),
+ CompressDebugSections(false), FunctionSections(false),
+ DataSections(false), UniqueSectionNames(true), TrapUnreachable(false),
+ TrapFuncName(), FloatABIType(FloatABI::Default),
+ AllowFPOpFusion(FPOpFusion::Standard), JTType(JumpTable::Single),
+ FCFI(false), ThreadModel(ThreadModel::POSIX),
+ CFIType(CFIntegrity::Sub), CFIEnforcing(false), CFIFuncName() {}
/// PrintMachineCode - This flag is enabled when the -print-machineinstrs
/// option is specified on the command line, and should enable debugging
/// elimination optimization, this option should disable it.
unsigned NoFramePointerElim : 1;
- /// NoFramePointerElimNonLeaf - This flag is enabled when the
- /// -disable-non-leaf-fp-elim is specified on the command line. If the
- /// target supports the frame pointer elimination optimization, this option
- /// should disable it for non-leaf functions.
- unsigned NoFramePointerElimNonLeaf : 1;
-
/// DisableFramePointerElim - This returns true if frame pointer elimination
/// optimization should be disabled for the given machine function.
bool DisableFramePointerElim(const MachineFunction &MF) const;
/// crt*.o compiling).
unsigned NoZerosInBSS : 1;
- /// JITExceptionHandling - This flag indicates that the JIT should emit
- /// exception handling information.
- unsigned JITExceptionHandling : 1;
-
/// JITEmitDebugInfo - This flag indicates that the JIT should try to emit
/// debug information and notify a debugger about it.
unsigned JITEmitDebugInfo : 1;
/// StackAlignmentOverride - Override default stack alignment for target.
unsigned StackAlignmentOverride;
- /// RealignStack - This flag indicates whether the stack should be
- /// automatically realigned, if needed.
- unsigned RealignStack : 1;
-
- /// SSPBufferSize - The minimum size of buffers that will receive stack
- /// smashing protection when -fstack-protection is used.
- unsigned SSPBufferSize;
-
/// EnableFastISel - This flag enables fast-path instruction selection
/// which trades away generated code quality in favor of reducing
/// compile time.
/// if the relocation model is anything other than PIC.
unsigned PositionIndependentExecutable : 1;
- unsigned EnableSegmentedStacks : 1;
-
/// UseInitArray - Use .init_array instead of .ctors for static
/// constructors.
unsigned UseInitArray : 1;
+ /// Disable the integrated assembler.
+ unsigned DisableIntegratedAS : 1;
+
+ /// Compress DWARF debug sections.
+ unsigned CompressDebugSections : 1;
+
+ /// Emit functions into separate sections.
+ unsigned FunctionSections : 1;
+
+ /// Emit data into separate sections.
+ unsigned DataSections : 1;
+
+ unsigned UniqueSectionNames : 1;
+
+ /// Emit target-specific trap instruction for 'unreachable' IR instructions.
+ unsigned TrapUnreachable : 1;
+
/// getTrapFunctionName - If this returns a non-empty string, this means
/// isel should lower Intrinsic::trap to a call to the specified function
/// name instead of an ISD::TRAP node.
/// FloatABIType - This setting is set by -float-abi=xxx option is specfied
/// on the command line. This setting may either be Default, Soft, or Hard.
/// Default selects the target's default behavior. Soft selects the ABI for
- /// UseSoftFloat, but does not indicate that FP hardware may not be used.
- /// Such a combination is unfortunately popular (e.g. arm-apple-darwin).
- /// Hard presumes that the normal FP ABI is used.
+ /// software floating point, but does not indicate that FP hardware may not
+ /// be used. Such a combination is unfortunately popular (e.g.
+ /// arm-apple-darwin). Hard presumes that the normal FP ABI is used.
FloatABI::ABIType FloatABIType;
/// AllowFPOpFusion - This flag is set by the -fuse-fp-ops=xxx option.
/// Strict mode - allow fusion only if/when it can be proven that the excess
/// precision won't effect the result.
///
- /// Note: This option only controls formation of fused ops by the optimizers.
- /// Fused operations that are explicitly specified (e.g. FMA via the
- /// llvm.fma.* intrinsic) will always be honored, regardless of the value of
- /// this option.
+ /// Note: This option only controls formation of fused ops by the
+ /// optimizers. Fused operations that are explicitly specified (e.g. FMA
+ /// via the llvm.fma.* intrinsic) will always be honored, regardless of
+ /// the value of this option.
FPOpFusion::FPOpFusionMode AllowFPOpFusion;
+ /// JTType - This flag specifies the type of jump-instruction table to
+ /// create for functions that have the jumptable attribute.
+ JumpTable::JumpTableType JTType;
+
+ /// FCFI - This flags controls whether or not forward-edge control-flow
+ /// integrity is applied.
+ bool FCFI;
+
+ /// ThreadModel - This flag specifies the type of threading model to assume
+ /// for things like atomics
+ ThreadModel::Model ThreadModel;
+
+ /// CFIType - This flag specifies the type of control-flow integrity check
+ /// to add as a preamble to indirect calls.
+ CFIntegrity CFIType;
+
+ /// CFIEnforcing - This flags controls whether or not CFI violations cause
+ /// the program to halt.
+ bool CFIEnforcing;
+
+ /// getCFIFuncName - If this returns a non-empty string, then this is the
+ /// name of the function that will be called for each CFI violation in
+ /// non-enforcing mode.
+ std::string CFIFuncName;
+ StringRef getCFIFuncName() const;
+
+ /// Machine level options.
+ MCTargetOptions MCOptions;
};
+
+// Comparison operators:
+
+
+inline bool operator==(const TargetOptions &LHS,
+ const TargetOptions &RHS) {
+#define ARE_EQUAL(X) LHS.X == RHS.X
+ return
+ ARE_EQUAL(UnsafeFPMath) &&
+ ARE_EQUAL(NoInfsFPMath) &&
+ ARE_EQUAL(NoNaNsFPMath) &&
+ ARE_EQUAL(HonorSignDependentRoundingFPMathOption) &&
+ ARE_EQUAL(UseSoftFloat) &&
+ ARE_EQUAL(NoZerosInBSS) &&
+ ARE_EQUAL(JITEmitDebugInfo) &&
+ ARE_EQUAL(JITEmitDebugInfoToDisk) &&
+ ARE_EQUAL(GuaranteedTailCallOpt) &&
+ ARE_EQUAL(DisableTailCalls) &&
+ ARE_EQUAL(StackAlignmentOverride) &&
+ ARE_EQUAL(EnableFastISel) &&
+ ARE_EQUAL(PositionIndependentExecutable) &&
+ ARE_EQUAL(UseInitArray) &&
+ ARE_EQUAL(TrapUnreachable) &&
+ ARE_EQUAL(TrapFuncName) &&
+ ARE_EQUAL(FloatABIType) &&
+ ARE_EQUAL(AllowFPOpFusion) &&
+ ARE_EQUAL(JTType) &&
+ ARE_EQUAL(FCFI) &&
+ ARE_EQUAL(ThreadModel) &&
+ ARE_EQUAL(CFIType) &&
+ ARE_EQUAL(CFIEnforcing) &&
+ ARE_EQUAL(CFIFuncName) &&
+ ARE_EQUAL(MCOptions);
+#undef ARE_EQUAL
+}
+
+inline bool operator!=(const TargetOptions &LHS,
+ const TargetOptions &RHS) {
+ return !(LHS == RHS);
+}
+
} // End llvm namespace
#endif
projects / oota-llvm.git / blobdiff