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c559ba7251
of the abi we should be using. For targets that don't use the option there's no change, otherwise this allows external users to set the ABI via string and avoid some of the -backend-option pain in clang. Use this option to move the ABI for the ARM port from the Subtarget to the TargetMachine and update the testcases accordingly since it's no longer valid to set via -mattr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224492 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
2.6 KiB
C++
68 lines
2.6 KiB
C++
//===-- TargetOptionsImpl.cpp - Options that apply to all targets ----------==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the methods in the TargetOptions.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Function.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/Target/TargetOptions.h"
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using namespace llvm;
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/// DisableFramePointerElim - This returns true if frame pointer elimination
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/// optimization should be disabled for the given machine function.
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bool TargetOptions::DisableFramePointerElim(const MachineFunction &MF) const {
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// Check to see if we should eliminate non-leaf frame pointers and then
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// check to see if we should eliminate all frame pointers.
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if (MF.getFunction()->hasFnAttribute("no-frame-pointer-elim-non-leaf") &&
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!NoFramePointerElim) {
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const MachineFrameInfo *MFI = MF.getFrameInfo();
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return MFI->hasCalls();
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}
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return NoFramePointerElim;
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}
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/// LessPreciseFPMAD - This flag return true when -enable-fp-mad option
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/// is specified on the command line. When this flag is off(default), the
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/// code generator is not allowed to generate mad (multiply add) if the
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/// result is "less precise" than doing those operations individually.
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bool TargetOptions::LessPreciseFPMAD() const {
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return UnsafeFPMath || LessPreciseFPMADOption;
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}
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/// HonorSignDependentRoundingFPMath - Return true if the codegen must assume
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/// that the rounding mode of the FPU can change from its default.
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bool TargetOptions::HonorSignDependentRoundingFPMath() const {
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return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption;
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}
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/// getTrapFunctionName - If this returns a non-empty string, this means isel
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/// should lower Intrinsic::trap to a call to the specified function name
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/// instead of an ISD::TRAP node.
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StringRef TargetOptions::getTrapFunctionName() const {
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return TrapFuncName;
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}
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/// getCFIFuncName - If this returns a non-empty string, then it is the name of
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/// the function that gets called on CFI violations in CFI non-enforcing mode
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/// (!TargetOptions::CFIEnforcing).
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StringRef TargetOptions::getCFIFuncName() const {
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return CFIFuncName;
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}
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/// getABIName - If this returns a non-empty string this represents the
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/// textual name of the ABI that we want the backend to use, e.g. o32, or
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/// aapcs-linux.
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StringRef TargetOptions::getABIName() const {
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return ABIName;
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}
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