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Make Triple::parseARMArch use ARMTargetParser

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Simplifying Triple::parseARMArch, leaving all the parsing to ARMTargetParser.

This commit also adds AArch64 detection to ARMTargetParser canonicalization,
and a two RedHat arch names (v{6,7}hl, meaning hard-float / little-endian).

Adding enough unit tests to cover the basics. Clang checks fine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237902 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Renato Golin
2015-05-21 13:52:20 +00:00
parent 897d9bccdc
commit b6ea67e027
4 changed files with 174 additions and 50 deletions
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47
lib/Support/TargetParser.cpp
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@@ -80,8 +80,10 @@ struct {
{ "armv5e", ARM::AK_ARMV5E, "5E", ARMBuildAttrs::CPUArch::v5TE },
{ "armv5tej", ARM::AK_ARMV5TEJ, "5TE", ARMBuildAttrs::CPUArch::v5TE },
{ "armv6sm", ARM::AK_ARMV6SM, "6-M", ARMBuildAttrs::CPUArch::v6_M },
{ "armv6hl", ARM::AK_ARMV6HL, "6-M", ARMBuildAttrs::CPUArch::v6_M },
{ "armv7e-m", ARM::AK_ARMV7EM, "7E-M", ARMBuildAttrs::CPUArch::v7E_M },
{ "armv7l", ARM::AK_ARMV7L, "7-L", ARMBuildAttrs::CPUArch::v7 },
{ "armv7hl", ARM::AK_ARMV7HL, "7H-L", ARMBuildAttrs::CPUArch::v7 },
{ "armv7s", ARM::AK_ARMV7S, "7-S", ARMBuildAttrs::CPUArch::v7 }
};
// List of canonical ARCH names (use getARCHSynonym)
@@ -179,7 +181,9 @@ struct {
{ "arm1022e", ARM::AK_ARMV5E, true },
{ "arm926ej-s", ARM::AK_ARMV5TEJ, true },
{ "cortex-m0", ARM::AK_ARMV6SM, true },
{ "arm1176jzf-s", ARM::AK_ARMV6HL, true },
{ "cortex-a8", ARM::AK_ARMV7L, true },
{ "cortex-a8", ARM::AK_ARMV7HL, true },
{ "cortex-m4", ARM::AK_ARMV7EM, true },
{ "swift", ARM::AK_ARMV7S, true },
// Invalid CPU
@@ -269,6 +273,7 @@ StringRef ARMTargetParser::getArchSynonym(StringRef Arch) {
.Cases("armv8", "v8", "armv8-a")
.Cases("armv8a", "v8a", "armv8-a")
.Cases("armv8.1a", "v8.1a", "armv8.1-a")
.Cases("aarch64", "arm64", "armv8-a")
.Default(Arch);
}
@@ -278,12 +283,22 @@ StringRef ARMTargetParser::getArchSynonym(StringRef Arch) {
StringRef ARMTargetParser::getCanonicalArchName(StringRef Arch) {
size_t offset = StringRef::npos;
StringRef A = Arch;
StringRef Error = "";
// Begins with "arm" / "thumb", move past it.
if (A.startswith("arm"))
offset = 3;
else if (A.startswith("thumb"))
offset = 5;
else if (A.startswith("aarch64")) {
offset = 7;
// AArch64 uses "_be", not "eb" suffix.
if (A.find("eb") != StringRef::npos)
return Error;
if (A.substr(offset,3) == "_be")
offset += 3;
}
// Ex. "armebv7", move past the "eb".
if (offset != StringRef::npos && A.substr(offset, 2) == "eb")
offset += 2;
@@ -301,7 +316,7 @@ StringRef ARMTargetParser::getCanonicalArchName(StringRef Arch) {
// If can't find the arch, return an empty StringRef.
if (parseArch(A) == ARM::AK_INVALID)
A = A.substr(A.size());
return Error;
// Arch will either be a 'v' name (v7a) or a marketing name (xscale)
// or empty, if invalid.
@@ -343,4 +358,34 @@ unsigned ARMTargetParser::parseCPUArch(StringRef CPU) {
return ARM::AK_INVALID;
}
// ARM, Thumb, AArch64
unsigned ARMTargetParser::parseArchISA(StringRef Arch) {
return StringSwitch<unsigned>(Arch)
.StartsWith("aarch64", ARM::IK_AARCH64)
.StartsWith("arm64", ARM::IK_AARCH64)
.StartsWith("thumb", ARM::IK_THUMB)
.StartsWith("arm", ARM::IK_ARM)
.Default(ARM::EK_INVALID);
}
// Little/Big endian
unsigned ARMTargetParser::parseArchEndian(StringRef Arch) {
if (Arch.startswith("armeb") ||
Arch.startswith("thumbeb") ||
Arch.startswith("aarch64_be"))
return ARM::EK_BIG;
if (Arch.startswith("arm") || Arch.startswith("thumb")) {
if (Arch.endswith("eb"))
return ARM::EK_BIG;
else
return ARM::EK_LITTLE;
}
if (Arch.startswith("aarch64"))
return ARM::EK_LITTLE;
return ARM::EK_INVALID;
}
} // namespace llvm