Make Triple::parseARMArch use ARMTargetParser

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.

llvm-svn: 237902

1 files changed, 65 insertions, 0 deletions

diff --git a/llvm/unittests/ADT/TripleTest.cpp b/llvm/unittests/ADT/TripleTest.cpp
index a1b2212dea7..4af3bfe9489 100644
--- a/llvm/unittests/ADT/TripleTest.cpp
+++ b/llvm/unittests/ADT/TripleTest.cpp
@@ -878,4 +878,69 @@ TEST(TripleTest, NormalizeARM) {
   EXPECT_EQ(Triple::armeb, T.getArch());
 }
 
+TEST(TripleTest, ParseARMArch) {
+  // ARM
+  {
+    Triple T = Triple("arm");
+    EXPECT_EQ(Triple::arm, T.getArch());
+  }
+  {
+    Triple T = Triple("armv6t2");
+    EXPECT_EQ(Triple::arm, T.getArch());
+  }
+  {
+    Triple T = Triple("armv8");
+    EXPECT_EQ(Triple::arm, T.getArch());
+  }
+  {
+    Triple T = Triple("armeb");
+    EXPECT_EQ(Triple::armeb, T.getArch());
+  }
+  {
+    Triple T = Triple("armv5eb");
+    EXPECT_EQ(Triple::armeb, T.getArch());
+  }
+  // THUMB
+  {
+    Triple T = Triple("thumb");
+    EXPECT_EQ(Triple::thumb, T.getArch());
+  }
+  {
+    Triple T = Triple("thumbv7a");
+    EXPECT_EQ(Triple::thumb, T.getArch());
+  }
+  {
+    Triple T = Triple("thumbeb");
+    EXPECT_EQ(Triple::thumbeb, T.getArch());
+  }
+  {
+    Triple T = Triple("thumbv4teb");
+    EXPECT_EQ(Triple::thumbeb, T.getArch());
+  }
+  {
+    Triple T = Triple("thumbv2");
+    EXPECT_EQ(Triple::UnknownArch, T.getArch());
+  }
+  // AARCH64
+  {
+    Triple T = Triple("arm64");
+    EXPECT_EQ(Triple::aarch64, T.getArch());
+  }
+  {
+    Triple T = Triple("aarch64");
+    EXPECT_EQ(Triple::aarch64, T.getArch());
+  }
+  {
+    Triple T = Triple("aarch64_be");
+    EXPECT_EQ(Triple::aarch64_be, T.getArch());
+  }
+  {
+    Triple T = Triple("aarch64be");
+    EXPECT_EQ(Triple::UnknownArch, T.getArch());
+  }
+  {
+    Triple T = Triple("arm64be");
+    EXPECT_EQ(Triple::UnknownArch, T.getArch());
+  }
+}
 } // end anonymous namespace