mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-20 03:23:01 +02:00
461e54845b
Similar to what some other targets have done. This information could be reused by other frontends so doesn't make sense to live in clang. -Rename CK_Generic to CK_None to better reflect its illegalness. -Move function for translating from string to enum into llvm. -Call checkCPUKind directly from the string to enum translation and update CPU kind to CK_None accordinly. Caller will use CK_None as sentinel for bad CPU. I'm planning to move all the CPU to feature mapping out next. As part of that I want to devise a better way to express CPUs inheriting features from an earlier CPU. Allowing this to be expressed in a less rigid way than just falling through a switch. Or using gotos as we've had to do lately. Differential Revision: https://reviews.llvm.org/D81439
59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
//===-- X86TargetParser - Parser for X86 features ---------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements a target parser to recognise X86 hardware features.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/X86TargetParser.h"
|
|
#include "llvm/ADT/StringSwitch.h"
|
|
#include "llvm/ADT/Triple.h"
|
|
|
|
using namespace llvm;
|
|
|
|
bool checkCPUKind(llvm::X86::CPUKind Kind, bool Only64Bit) {
|
|
using namespace X86;
|
|
// Perform any per-CPU checks necessary to determine if this CPU is
|
|
// acceptable.
|
|
switch (Kind) {
|
|
case CK_None:
|
|
// No processor selected!
|
|
return false;
|
|
#define PROC(ENUM, STRING, IS64BIT) \
|
|
case CK_##ENUM: \
|
|
return IS64BIT || !Only64Bit;
|
|
#include "llvm/Support/X86TargetParser.def"
|
|
}
|
|
llvm_unreachable("Unhandled CPU kind");
|
|
}
|
|
|
|
X86::CPUKind llvm::X86::parseArchX86(StringRef CPU, bool Only64Bit) {
|
|
X86::CPUKind Kind = llvm::StringSwitch<CPUKind>(CPU)
|
|
#define PROC(ENUM, STRING, IS64BIT) .Case(STRING, CK_##ENUM)
|
|
#define PROC_ALIAS(ENUM, ALIAS) .Case(ALIAS, CK_##ENUM)
|
|
#include "llvm/Support/X86TargetParser.def"
|
|
.Default(CK_None);
|
|
|
|
if (!checkCPUKind(Kind, Only64Bit))
|
|
Kind = CK_None;
|
|
|
|
return Kind;
|
|
}
|
|
|
|
void llvm::X86::fillValidCPUArchList(SmallVectorImpl<StringRef> &Values,
|
|
bool Only64Bit) {
|
|
#define PROC(ENUM, STRING, IS64BIT) \
|
|
if (IS64BIT || !Only64Bit) \
|
|
Values.emplace_back(STRING);
|
|
// For aliases we need to lookup the CPUKind to get the 64-bit ness.
|
|
#define PROC_ALIAS(ENUM, ALIAS) \
|
|
if (checkCPUKind(CK_##ENUM, Only64Bit)) \
|
|
Values.emplace_back(ALIAS);
|
|
#include "llvm/Support/X86TargetParser.def"
|
|
}
|