[MC] [llvm-ml] Add support for the extrn keyword

It is the same as the already supported `extern` keyword.
https://learn.microsoft.com/en-us/cpp/assembler/masm/extrn?view=msvc-170

Fixes: https://github.com/llvm/llvm-project/issues/59712

Reviewed By: epastor

Differential Revision: https://reviews.llvm.org/D140679

diff --git a/llvm/lib/MC/MCParser/MasmParser.cpp b/llvm/lib/MC/MCParser/MasmParser.cpp
index 37dc1a3..e7e1d59 100644 (file)
--- a/llvm/lib/MC/MCParser/MasmParser.cpp
+++ b/llvm/lib/MC/MCParser/MasmParser.cpp
@@ -6720,6 +6720,7 @@ void MasmParser::initializeDirectiveKindMap() {
   DirectiveKindMap["even"] = DK_EVEN;
   DirectiveKindMap["org"] = DK_ORG;
   DirectiveKindMap["extern"] = DK_EXTERN;
+  DirectiveKindMap["extrn"] = DK_EXTERN;
   DirectiveKindMap["public"] = DK_PUBLIC;
   // DirectiveKindMap[".comm"] = DK_COMM;
   DirectiveKindMap["comment"] = DK_COMMENT;