2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
104 lines
3.7 KiB
C++
104 lines
3.7 KiB
C++
//===--- RISCV.cpp - Implement RISCV target feature support ---------------===//
|
|
//
|
|
// 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 RISCV TargetInfo objects.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "RISCV.h"
|
|
#include "clang/Basic/MacroBuilder.h"
|
|
#include "llvm/ADT/StringSwitch.h"
|
|
|
|
using namespace clang;
|
|
using namespace clang::targets;
|
|
|
|
ArrayRef<const char *> RISCVTargetInfo::getGCCRegNames() const {
|
|
static const char *const GCCRegNames[] = {
|
|
"x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
|
|
"x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",
|
|
"x16", "x17", "x18", "x19", "x20", "x21", "x22", "x23",
|
|
"x24", "x25", "x26", "x27", "x28", "x29", "x30", "x31"};
|
|
return llvm::makeArrayRef(GCCRegNames);
|
|
}
|
|
|
|
ArrayRef<TargetInfo::GCCRegAlias> RISCVTargetInfo::getGCCRegAliases() const {
|
|
static const TargetInfo::GCCRegAlias GCCRegAliases[] = {
|
|
{{"zero"}, "x0"}, {{"ra"}, "x1"}, {{"sp"}, "x2"}, {{"gp"}, "x3"},
|
|
{{"tp"}, "x4"}, {{"t0"}, "x5"}, {{"t1"}, "x6"}, {{"t2"}, "x7"},
|
|
{{"s0"}, "x8"}, {{"s1"}, "x9"}, {{"a0"}, "x10"}, {{"a1"}, "x11"},
|
|
{{"a2"}, "x12"}, {{"a3"}, "x13"}, {{"a4"}, "x15"}, {{"a5"}, "x15"},
|
|
{{"a6"}, "x16"}, {{"a7"}, "x17"}, {{"s2"}, "x18"}, {{"s3"}, "x19"},
|
|
{{"s4"}, "x20"}, {{"s5"}, "x21"}, {{"s6"}, "x22"}, {{"s7"}, "x23"},
|
|
{{"s8"}, "x24"}, {{"s9"}, "x25"}, {{"s10"}, "x26"}, {{"s11"}, "x27"},
|
|
{{"t3"}, "x28"}, {{"t4"}, "x29"}, {{"t5"}, "x30"}, {{"t6"}, "x31"}};
|
|
return llvm::makeArrayRef(GCCRegAliases);
|
|
}
|
|
|
|
void RISCVTargetInfo::getTargetDefines(const LangOptions &Opts,
|
|
MacroBuilder &Builder) const {
|
|
Builder.defineMacro("__ELF__");
|
|
Builder.defineMacro("__riscv");
|
|
bool Is64Bit = getTriple().getArch() == llvm::Triple::riscv64;
|
|
Builder.defineMacro("__riscv_xlen", Is64Bit ? "64" : "32");
|
|
// TODO: modify when more code models and ABIs are supported.
|
|
Builder.defineMacro("__riscv_cmodel_medlow");
|
|
Builder.defineMacro("__riscv_float_abi_soft");
|
|
|
|
if (HasM) {
|
|
Builder.defineMacro("__riscv_mul");
|
|
Builder.defineMacro("__riscv_div");
|
|
Builder.defineMacro("__riscv_muldiv");
|
|
}
|
|
|
|
if (HasA)
|
|
Builder.defineMacro("__riscv_atomic");
|
|
|
|
if (HasF || HasD) {
|
|
Builder.defineMacro("__riscv_flen", HasD ? "64" : "32");
|
|
Builder.defineMacro("__riscv_fdiv");
|
|
Builder.defineMacro("__riscv_fsqrt");
|
|
}
|
|
|
|
if (HasC)
|
|
Builder.defineMacro("__riscv_compressed");
|
|
}
|
|
|
|
/// Return true if has this feature, need to sync with handleTargetFeatures.
|
|
bool RISCVTargetInfo::hasFeature(StringRef Feature) const {
|
|
bool Is64Bit = getTriple().getArch() == llvm::Triple::riscv64;
|
|
return llvm::StringSwitch<bool>(Feature)
|
|
.Case("riscv", true)
|
|
.Case("riscv32", !Is64Bit)
|
|
.Case("riscv64", Is64Bit)
|
|
.Case("m", HasM)
|
|
.Case("a", HasA)
|
|
.Case("f", HasF)
|
|
.Case("d", HasD)
|
|
.Case("c", HasC)
|
|
.Default(false);
|
|
}
|
|
|
|
/// Perform initialization based on the user configured set of features.
|
|
bool RISCVTargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
|
|
DiagnosticsEngine &Diags) {
|
|
for (const auto &Feature : Features) {
|
|
if (Feature == "+m")
|
|
HasM = true;
|
|
else if (Feature == "+a")
|
|
HasA = true;
|
|
else if (Feature == "+f")
|
|
HasF = true;
|
|
else if (Feature == "+d")
|
|
HasD = true;
|
|
else if (Feature == "+c")
|
|
HasC = true;
|
|
}
|
|
|
|
return true;
|
|
}
|