Spell out all valid DXIL SubArch values.

Author: bharadwajy

llvm/lib/TargetParser/Triple.cpp

@@ -573,7 +573,9 @@ static Triple::ArchType parseArch(StringRef ArchName) {
           .Case("csky", Triple::csky)
           .Case("loongarch32", Triple::loongarch32)
           .Case("loongarch64", Triple::loongarch64)
-          .StartsWith("dxil", Triple::dxil)
+          .Cases("dxil", "dxilv1.0", "dxilv1.1", "dxilv1.2",
+                 "dxilv1.3", "dxilv1.4", "dxilv1.5", "dxilv1.6",
+                 "dxilv1.7", "dxilv1.8",Triple::dxil)
           .Case("xtensa", Triple::xtensa)
           .Default(Triple::UnknownArch);
 

llvm/unittests/TargetParser/TripleTest.cpp

@@ -1026,7 +1026,7 @@ TEST(TripleTest, ParsedIDs) {
   EXPECT_EQ(Triple::UnknownOS, T.getOS());
 
   T = Triple("dxilv1.9-unknown-unknown");
-  EXPECT_EQ(Triple::dxil, T.getArch());
+  EXPECT_EQ(Triple::UnknownArch, T.getArch());
   EXPECT_EQ(Triple::NoSubArch, T.getSubArch());
   EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
   EXPECT_EQ(Triple::UnknownOS, T.getOS());