[clang] [X86][CFE] Support EGPR in inline assembly. (PR #91323)

[Freddy Ye via cfe-commits]

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@@ -83,8 +85,23 @@ const TargetInfo::AddlRegName AddlRegNames[] = {
     {{"r13d", "r13w", "r13b"}, 43},
     {{"r14d", "r14w", "r14b"}, 44},
     {{"r15d", "r15w", "r15b"}, 45},
+    {{"r16d", "r16w", "r16b"}, 165},
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FreddyLeaf wrote:

it's the index of "r16" in GCCRegNames

https://github.com/llvm/llvm-project/pull/91323