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87f14b4eec
subsequent changes are easier to review. About to fix some layering issues, and wanted to separate out the necessary churn. Also comment and sink the include of "Windows.h" in three .inc files to match the usage in Memory.inc. llvm-svn: 198685
54 lines
2.1 KiB
C++
54 lines
2.1 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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