1ebfe9b264
AArch64TargetParser reuses data structures and some data from ARMTargetParser, which causes more problems than it solves. This change separates them. Code which is common to ARM and AArch64 is moved to ARMTargetParserCommon which both ARMTargetParser and AArch64TargetParser use. Some of the information in AArch64TargetParser.def was unused or nonsensical (CPU_ATTR, ARCH_ATTR, ARCH_FPU) because it reused data strutures from ARMTargetParser where some of these make sense. These are removed. Differential Revision: https://reviews.llvm.org/D137924
104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
//===---------------- ARMTargetParserCommon ---------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Code that is common to ARMTargetParser and AArch64TargetParser.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/ARMTargetParserCommon.h"
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#include "llvm/ADT/StringSwitch.h"
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using namespace llvm;
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StringRef ARM::getArchSynonym(StringRef Arch) {
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return StringSwitch<StringRef>(Arch)
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.Case("v5", "v5t")
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.Case("v5e", "v5te")
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.Case("v6j", "v6")
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.Case("v6hl", "v6k")
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.Cases("v6m", "v6sm", "v6s-m", "v6-m")
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.Cases("v6z", "v6zk", "v6kz")
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.Cases("v7", "v7a", "v7hl", "v7l", "v7-a")
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.Case("v7r", "v7-r")
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.Case("v7m", "v7-m")
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.Case("v7em", "v7e-m")
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.Cases("v8", "v8a", "v8l", "aarch64", "arm64", "v8-a")
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.Case("v8.1a", "v8.1-a")
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.Case("v8.2a", "v8.2-a")
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.Case("v8.3a", "v8.3-a")
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.Case("v8.4a", "v8.4-a")
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.Case("v8.5a", "v8.5-a")
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.Case("v8.6a", "v8.6-a")
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.Case("v8.7a", "v8.7-a")
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.Case("v8.8a", "v8.8-a")
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.Case("v8r", "v8-r")
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.Cases("v9", "v9a", "v9-a")
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.Case("v9.1a", "v9.1-a")
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.Case("v9.2a", "v9.2-a")
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.Case("v9.3a", "v9.3-a")
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.Case("v8m.base", "v8-m.base")
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.Case("v8m.main", "v8-m.main")
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.Case("v8.1m.main", "v8.1-m.main")
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.Default(Arch);
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}
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StringRef ARM::getCanonicalArchName(StringRef Arch) {
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size_t offset = StringRef::npos;
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StringRef A = Arch;
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StringRef Error = "";
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// Begins with "arm" / "thumb", move past it.
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if (A.startswith("arm64_32"))
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offset = 8;
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else if (A.startswith("arm64e"))
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offset = 6;
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else if (A.startswith("arm64"))
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offset = 5;
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else if (A.startswith("aarch64_32"))
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offset = 10;
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else if (A.startswith("arm"))
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offset = 3;
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else if (A.startswith("thumb"))
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offset = 5;
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else if (A.startswith("aarch64")) {
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offset = 7;
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// AArch64 uses "_be", not "eb" suffix.
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if (A.contains("eb"))
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return Error;
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if (A.substr(offset, 3) == "_be")
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offset += 3;
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}
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// Ex. "armebv7", move past the "eb".
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if (offset != StringRef::npos && A.substr(offset, 2) == "eb")
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offset += 2;
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// Or, if it ends with eb ("armv7eb"), chop it off.
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else if (A.endswith("eb"))
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A = A.substr(0, A.size() - 2);
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// Trim the head
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if (offset != StringRef::npos)
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A = A.substr(offset);
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// Empty string means offset reached the end, which means it's valid.
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if (A.empty())
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return Arch;
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// Only match non-marketing names
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if (offset != StringRef::npos) {
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// Must start with 'vN'.
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if (A.size() >= 2 && (A[0] != 'v' || !std::isdigit(A[1])))
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return Error;
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// Can't have an extra 'eb'.
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if (A.contains("eb"))
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return Error;
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}
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// Arch will either be a 'v' name (v7a) or a marketing name (xscale).
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return A;
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}
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