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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
Download Patch File Download Diff File Expand all files Collapse all files
lib/Support/Triple.cpp
+43 -49
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@@ -236,60 +236,54 @@ Triple::ArchType Triple::getArchTypeForLLVMName(StringRef Name) {
.Default(UnknownArch);
}
// FIXME: Use ARMTargetParser. This would require Triple::arm/thumb
// to be recogniseable universally.
static Triple::ArchType parseARMArch(StringRef ArchName) {
size_t offset = StringRef::npos;
unsigned ISA = ARMTargetParser::parseArchISA(ArchName);
unsigned ENDIAN = ARMTargetParser::parseArchEndian(ArchName);
Triple::ArchType arch = Triple::UnknownArch;
bool isThumb = ArchName.startswith("thumb");
if (ArchName.equals("arm"))
return Triple::arm;
if (ArchName.equals("armeb"))
return Triple::armeb;
if (ArchName.equals("thumb"))
return Triple::thumb;
if (ArchName.equals("thumbeb"))
return Triple::thumbeb;
if (ArchName.equals("arm64") || ArchName.equals("aarch64"))
return Triple::aarch64;
if (ArchName.equals("aarch64_be"))
return Triple::aarch64_be;
if (ArchName.startswith("armv")) {
offset = 3;
if (ArchName.endswith("eb")) {
arch = Triple::armeb;
ArchName = ArchName.substr(0, ArchName.size() - 2);
} else
switch (ENDIAN) {
case ARM::EK_LITTLE: {
switch (ISA) {
case ARM::IK_ARM:
arch = Triple::arm;
} else if (ArchName.startswith("armebv")) {
offset = 5;
arch = Triple::armeb;
} else if (ArchName.startswith("thumbv")) {
offset = 5;
if (ArchName.endswith("eb")) {
arch = Triple::thumbeb;
ArchName = ArchName.substr(0, ArchName.size() - 2);
} else
break;
case ARM::IK_THUMB:
arch = Triple::thumb;
} else if (ArchName.startswith("thumbebv")) {
offset = 7;
arch = Triple::thumbeb;
break;
case ARM::IK_AARCH64:
arch = Triple::aarch64;
break;
}
break;
}
return StringSwitch<Triple::ArchType>(ArchName.substr(offset))
.Cases("v2", "v2a", isThumb ? Triple::UnknownArch : arch)
.Cases("v3", "v3m", isThumb ? Triple::UnknownArch : arch)
.Cases("v4", "v4t", arch)
.Cases("v5", "v5e", "v5t", "v5te", "v5tej", arch)
.Cases("v6", "v6hl", "v6j", "v6k", arch)
.Cases("v6m", "v6sm", arch)
.Cases("v6t2", "v6z", "v6zk", arch)
.Cases("v7", "v7a", "v7em", "v7hl", "v7l", arch)
.Cases("v7m", "v7r", "v7s", arch)
.Cases("v8", "v8a", arch)
.Cases("v8.1", "v8.1a", arch)
.Default(Triple::UnknownArch);
case ARM::EK_BIG: {
switch (ISA) {
case ARM::IK_ARM:
arch = Triple::armeb;
break;
case ARM::IK_THUMB:
arch = Triple::thumbeb;
break;
case ARM::IK_AARCH64:
arch = Triple::aarch64_be;
break;
}
break;
}
}
ArchName = ARMTargetParser::getCanonicalArchName(ArchName);
if (ArchName.empty())
return Triple::UnknownArch;
// Thumb only exists in v4+
if (ISA == ARM::IK_THUMB &&
(ArchName.startswith("v2") || ArchName.startswith("v3")))
return Triple::UnknownArch;
// FIXME: Add isMProfile to ARMTargetParser and
// either change armv6m to thumb or UnknownArch.
return arch;
}
static Triple::ArchType parseArch(StringRef ArchName) {