[llvm] [LLVM] Add environment triple for 'llvm' (PR #117218)

[Nick Desaulniers via llvm-commits]

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@@ -1341,6 +1341,12 @@ TEST(TripleTest, ParsedIDs) {
   EXPECT_TRUE(T.isTime64ABI());
   EXPECT_TRUE(T.isHardFloatABI());
 
+  T = Triple("x86_64-pc-linux-llvm");
+  EXPECT_EQ(Triple::x86_64, T.getArch());
+  EXPECT_EQ(Triple::PC, T.getVendor());
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nickdesaulniers wrote:

It's a waste of an assert. The only part we even care about is the environment check.

https://github.com/llvm/llvm-project/pull/117218