f785676f2a
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
54 lines
2.1 KiB
C++
54 lines
2.1 KiB
C++
//===-- TargetOptionsImpl.cpp - Options that apply to all targets ----------==//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the methods in the TargetOptions.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/CodeGen/MachineFunction.h"
|
|
#include "llvm/CodeGen/MachineFrameInfo.h"
|
|
#include "llvm/Target/TargetOptions.h"
|
|
using namespace llvm;
|
|
|
|
/// DisableFramePointerElim - This returns true if frame pointer elimination
|
|
/// optimization should be disabled for the given machine function.
|
|
bool TargetOptions::DisableFramePointerElim(const MachineFunction &MF) const {
|
|
// Check to see if we should eliminate non-leaf frame pointers and then
|
|
// check to see if we should eliminate all frame pointers.
|
|
if (MF.getFunction()->hasFnAttribute("no-frame-pointer-elim-non-leaf") &&
|
|
!NoFramePointerElim) {
|
|
const MachineFrameInfo *MFI = MF.getFrameInfo();
|
|
return MFI->hasCalls();
|
|
}
|
|
|
|
return NoFramePointerElim;
|
|
}
|
|
|
|
/// LessPreciseFPMAD - This flag return true when -enable-fp-mad option
|
|
/// is specified on the command line. When this flag is off(default), the
|
|
/// code generator is not allowed to generate mad (multiply add) if the
|
|
/// result is "less precise" than doing those operations individually.
|
|
bool TargetOptions::LessPreciseFPMAD() const {
|
|
return UnsafeFPMath || LessPreciseFPMADOption;
|
|
}
|
|
|
|
/// HonorSignDependentRoundingFPMath - Return true if the codegen must assume
|
|
/// that the rounding mode of the FPU can change from its default.
|
|
bool TargetOptions::HonorSignDependentRoundingFPMath() const {
|
|
return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption;
|
|
}
|
|
|
|
/// 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.
|
|
StringRef TargetOptions::getTrapFunctionName() const {
|
|
return TrapFuncName;
|
|
}
|