[llvm] [aarch64][win] Add support for import call optimization (equivalent to MSVC /d2ImportCallOptimization) (PR #121516)

[Matt Arsenault via llvm-commits]

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@@ -577,6 +580,24 @@ bool COFFAsmParser::parseDirectiveSymIdx(StringRef, SMLoc) {
   return false;
 }
 
+bool COFFAsmParser::parseDirectiveImpCall(StringRef, SMLoc) {
+  if (!getContext().getObjectFileInfo()->getImportCallSection())
+    return TokError("target doesn't have an import call section");
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arsenm wrote:

Avoid ' in error messages 

https://github.com/llvm/llvm-project/pull/121516