[llvm-commits] [llvm] r146185 - /llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp

[Jim Grosbach]

Author: grosbach
Date: Thu Dec  8 15:34:20 2011
New Revision: 146185

URL: http://llvm.org/viewvc/llvm-project?rev=146185&view=rev
Log:
ARM asm parser, just issue a warning for a duplicate reg in a list.

For better 'gas' compatibility.

Modified:
    llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp

Modified: llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp?rev=146185&r1=146184&r2=146185&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp (original)
+++ llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp Thu Dec  8 15:34:20 2011
@@ -2596,6 +2596,7 @@
     Parser.Lex(); // Eat the comma.
     RegLoc = Parser.getTok().getLoc();
     int OldReg = Reg;
+    const AsmToken RegTok = Parser.getTok();
     Reg = tryParseRegister();
     if (Reg == -1)
       return Error(RegLoc, "register expected");
@@ -2609,8 +2610,13 @@
     if (!RC->contains(Reg))
       return Error(RegLoc, "invalid register in register list");
     // List must be monotonically increasing.
-    if (getARMRegisterNumbering(Reg) <= getARMRegisterNumbering(OldReg))
+    if (getARMRegisterNumbering(Reg) < getARMRegisterNumbering(OldReg))
       return Error(RegLoc, "register list not in ascending order");
+    if (getARMRegisterNumbering(Reg) == getARMRegisterNumbering(OldReg)) {
+      Warning(RegLoc, "duplicated register (" + RegTok.getString() +
+              ") in register list");
+      continue;
+    }
     // VFP register lists must also be contiguous.
     // It's OK to use the enumeration values directly here rather, as the
     // VFP register classes have the enum sorted properly.