[PATCH] D24957: [x86][ms-inline-asm] use of "jmp short" in asm is not supported

[Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL284211: [x86][ms-inline-asm] use of "jmp short" in asm is not supported (authored by mzuckerm).

Changed prior to commit:
  https://reviews.llvm.org/D24957?vs=73762&id=74625#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D24957

Files:
  llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp


Index: llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp
===================================================================
--- llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -2157,6 +2157,20 @@
   InstInfo = &Info;
   StringRef PatchedName = Name;
 
+  if (Name == "jmp" && isParsingIntelSyntax() && isParsingInlineAsm()) {
+    StringRef NextTok = Parser.getTok().getString();
+    if (NextTok == "short") {
+      SMLoc NameEndLoc =
+          NameLoc.getFromPointer(NameLoc.getPointer() + Name.size());
+      // Eat the short keyword
+      Parser.Lex();
+      // MS ignores the short keyword, it determines the jmp type based
+      // on the distance of the label
+      InstInfo->AsmRewrites->emplace_back(AOK_Skip, NameEndLoc,
+                                          NextTok.size() + 1);
+    }
+  }
+
   // FIXME: Hack to recognize setneb as setne.
   if (PatchedName.startswith("set") && PatchedName.endswith("b") &&
       PatchedName != "setb" && PatchedName != "setnb")


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