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[Triple] Reimplement isLittleEndian(). Now it works for arm too.

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Differential Revision:   http://reviews.llvm.org/D21846

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@274154 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Davide Italiano 2016-06-29 20:01:39 +00:00
parent a4d56588c9
commit 23b149871d
2 changed files with 33 additions and 30 deletions
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55
lib/Support/Triple.cpp
View File

@ -1288,6 +1288,9 @@ Triple Triple::get64BitArchVariant() const {
Triple Triple::getBigEndianArchVariant() const {
Triple T(*this);
// Already big endian.
if (!isLittleEndian())
return T;
switch (getArch()) {
case Triple::UnknownArch:
case Triple::amdgcn:
@ -1320,34 +1323,23 @@ Triple Triple::getBigEndianArchVariant() const {
T.setArch(UnknownArch);
break;
case Triple::aarch64_be:
case Triple::armeb:
case Triple::bpfeb:
case Triple::lanai:
case Triple::mips64:
case Triple::mips:
case Triple::ppc64:
case Triple::ppc:
case Triple::sparc:
case Triple::sparcv9:
case Triple::systemz:
case Triple::tce:
case Triple::thumbeb:
// Already big endian.
break;
case Triple::aarch64: T.setArch(Triple::aarch64_be); break;
case Triple::bpfel: T.setArch(Triple::bpfeb); break;
case Triple::mips64el:T.setArch(Triple::mips64); break;
case Triple::mipsel: T.setArch(Triple::mips); break;
case Triple::ppc64le: T.setArch(Triple::ppc64); break;
case Triple::sparcel: T.setArch(Triple::sparc); break;
default:
llvm_unreachable("getBigEndianArchVariant: unknown triple.");
}
return T;
}
Triple Triple::getLittleEndianArchVariant() const {
Triple T(*this);
if (isLittleEndian())
return T;
switch (getArch()) {
case Triple::UnknownArch:
case Triple::lanai:
@ -1363,6 +1355,20 @@ Triple Triple::getLittleEndianArchVariant() const {
T.setArch(UnknownArch);
break;
case Triple::aarch64_be: T.setArch(Triple::aarch64); break;
case Triple::bpfeb: T.setArch(Triple::bpfel); break;
case Triple::mips64: T.setArch(Triple::mips64el); break;
case Triple::mips: T.setArch(Triple::mipsel); break;
case Triple::ppc64: T.setArch(Triple::ppc64le); break;
case Triple::sparc: T.setArch(Triple::sparcel); break;
default:
llvm_unreachable("getLittleEndianArchVariant: unknown triple.");
}
return T;
}
bool Triple::isLittleEndian() const {
switch (getArch()) {
case Triple::aarch64:
case Triple::amdgcn:
case Triple::amdil64:
@ -1393,21 +1399,10 @@ Triple Triple::getLittleEndianArchVariant() const {
case Triple::x86:
case Triple::x86_64:
case Triple::xcore:
// Already little endian.
break;
case Triple::aarch64_be: T.setArch(Triple::aarch64); break;
case Triple::bpfeb: T.setArch(Triple::bpfel); break;
case Triple::mips64: T.setArch(Triple::mips64el); break;
case Triple::mips: T.setArch(Triple::mipsel); break;
case Triple::ppc64: T.setArch(Triple::ppc64le); break;
case Triple::sparc: T.setArch(Triple::sparcel); break;
return true;
default:
return false;
}
return T;
}
bool Triple::isLittleEndian() const {
return *this == getLittleEndianArchVariant();
}
StringRef Triple::getARMCPUForArch(StringRef MArch) const {

8
unittests/ADT/TripleTest.cpp
View File

@ -643,6 +643,14 @@ TEST(TripleTest, EndianArchVariants) {
T.setArch(Triple::arm);
EXPECT_EQ(Triple::UnknownArch, T.getBigEndianArchVariant().getArch());
EXPECT_EQ(Triple::arm, T.getLittleEndianArchVariant().getArch());
T = Triple("arm");
EXPECT_TRUE(T.isLittleEndian());
T = Triple("thumb");
EXPECT_TRUE(T.isLittleEndian());
T = Triple("armeb");
EXPECT_FALSE(T.isLittleEndian());
T = Triple("thumbeb");
EXPECT_FALSE(T.isLittleEndian());
T.setArch(Triple::bpfeb);
EXPECT_EQ(Triple::bpfeb, T.getBigEndianArchVariant().getArch());