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Improve Triple to recognize the OS in i386-mingw32.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79359 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2009-08-18 19:26:55 +00:00
parent fe37ab335b
commit 651aa689cc
3 changed files with 47 additions and 4 deletions
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18
include/llvm/ADT/Triple.h
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@ -29,8 +29,22 @@ class Twine;
/// behavior for particular targets. This class isolates the mapping
/// from the components of the target triple to well known IDs.
///
/// See autoconf/config.guess for a glimpse into what they look like
/// in practice.
/// At its core the Triple class is designed to be a wrapper for a triple
/// string; it does not normally change or normalize the triple string, instead
/// it provides additional APIs to parse normalized parts out of the triple.
///
/// One curiosity this implies is that for some odd triples the results of,
/// e.g., getOSName() can be very different from the result of getOS(). For
/// example, for 'i386-mingw32', getOS() will return MinGW32, but since
/// getOSName() is purely based on the string structure that will return the
/// empty string.
///
/// Clients should generally avoid using getOSName() and related APIs unless
/// they are familiar with the triple format (this is particularly true when
/// rewriting a triple).
///
/// See autoconf/config.guess for a glimpse into what they look like in
/// practice.
class Triple {
public:
enum ArchType {

19
lib/Support/Triple.cpp
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@ -117,6 +117,9 @@ void Triple::Parse() const {
assert(!isInitialized() && "Invalid parse call.");
StringRef ArchName = getArchName();
StringRef VendorName = getVendorName();
StringRef OSName = getOSName();
if (ArchName.size() == 4 && ArchName[0] == 'i' &&
ArchName[2] == '8' && ArchName[3] == '6' &&
ArchName[1] - '3' < 6) // i[3-9]86
@ -156,7 +159,22 @@ void Triple::Parse() const {
else
Arch = UnknownArch;
// Handle some exceptional cases where the OS / environment components are
// stuck into the vendor field.
if (StringRef(getTriple()).count('-') == 1) {
StringRef VendorName = getVendorName();
if (VendorName.startswith("mingw32")) { // 'i386-mingw32', etc.
Vendor = PC;
OS = MinGW32;
return;
}
// arm-elf is another example, but we don't currently parse anything about
// the environment.
}
if (VendorName == "apple")
Vendor = Apple;
else if (VendorName == "pc")
@ -164,7 +182,6 @@ void Triple::Parse() const {
else
Vendor = UnknownVendor;
StringRef OSName = getOSName();
if (OSName.startswith("auroraux"))
OS = AuroraUX;
else if (OSName.startswith("cygwin"))

12
unittests/ADT/TripleTest.cpp
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@ -92,6 +92,18 @@ TEST(TripleTest, ParsedIDs) {
T = Triple("huh");
EXPECT_EQ(Triple::UnknownArch, T.getArch());
// Two exceptional cases.
T = Triple("i386-mingw32");
EXPECT_EQ(Triple::x86, T.getArch());
EXPECT_EQ(Triple::PC, T.getVendor());
EXPECT_EQ(Triple::MinGW32, T.getOS());
T = Triple("arm-elf");
EXPECT_EQ(Triple::arm, T.getArch());
EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
EXPECT_EQ(Triple::UnknownOS, T.getOS());
}
TEST(TripleTest, MutateName) {