From: Chad Rosier <mcrosier@apple.com>
Date: Thu, 11 Apr 2013 21:49:30 +0000 (+0000)
Subject: [ms-inline asm] Remove brackets from around a symbol reference in the target
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f06cc981495991d2095ed4066f0eb9c0241c0a61;p=oota-llvm.git

[ms-inline asm] Remove brackets from around a symbol reference in the target
specific logic.  This makes the code much less fragile.  Test case coming on the
clang side in a moment.
rdar://13634327


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179323 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index c50177cb0a4..f34bbe90ed9 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -4196,12 +4196,8 @@ AsmParser::parseMSInlineAsm(void *AsmLoc, std::string &AsmString,
 
     // Emit everything up to the immediate/expression.
     unsigned Len = Loc - AsmStart;
-    if (Len) {
-      // For Input/Output operands we need to remove the brackets, if present.
-      if ((Kind == AOK_Input || Kind == AOK_Output) && Loc[-1] == '[')
-        --Len;
+    if (Len)
       OS << StringRef(AsmStart, Len);
-    }
 
     // Skip the original expression.
     if (Kind == AOK_Skip) {
@@ -4255,11 +4251,6 @@ AsmParser::parseMSInlineAsm(void *AsmLoc, std::string &AsmString,
 
     // Skip the original expression.
     AsmStart = Loc + (*I).Len + AdditionalSkip;
-
-    // For Input/Output operands we need to remove the brackets, if present.
-    if ((Kind == AOK_Input || Kind == AOK_Output) && AsmStart != AsmEnd &&
-        *AsmStart == ']')
-      ++AsmStart;
   }
 
   // Emit the remainder of the asm string.
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index f587d36232c..aaf571ae9d3 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -1140,6 +1140,11 @@ X86Operand *X86AsmParser::ParseIntelBracExpression(unsigned SegReg,
       if (getLexer().isNot(AsmToken::RBrac))
         return ErrorOperand(Tok.getLoc(), "Expected ']' token!");
 
+      if (isParsingInlineAsm()) {
+        // Remove the '[' and ']' from the IR string.
+        InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, Start, 1));
+        InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, Tok.getLoc(), 1));
+      }
       unsigned Len = Tok.getLoc().getPointer() - IdentStart.getPointer();
       StringRef SymName(IdentStart.getPointer(), Len);
       Parser.Lex(); // Eat ']'
@@ -1211,6 +1216,11 @@ X86Operand *X86AsmParser::ParseIntelBracExpression(unsigned SegReg,
       Parser.Lex(); // Consume the token.
     }
   }
+  if (isParsingInlineAsm() && Disp && isa<MCSymbolRefExpr>(Disp)) {
+    // Remove the '[' and ']' from the IR string.
+    InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, Start, 1));
+    InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, End, 1));
+  }
 
   if (!Disp)
     Disp = MCConstantExpr::Create(SM.getDisp(), getContext());