[llvm-commits] [llvm] r140035 - /llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp

[Jim Grosbach]

Author: grosbach
Date: Mon Sep 19 13:42:21 2011
New Revision: 140035

URL: http://llvm.org/viewvc/llvm-project?rev=140035&view=rev
Log:
ARM asm parsing should handle pre-indexed writeback w/o immediate.

For example, 'ldrb r9, [sp]!' is odd, but valid.

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=140035&r1=140034&r2=140035&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp (original)
+++ llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp Mon Sep 19 13:42:21 2011
@@ -2807,6 +2807,13 @@
     Operands.push_back(ARMOperand::CreateMem(BaseRegNum, 0, 0, ARM_AM::no_shift,
                                              0, false, S, E));
 
+    // If there's a pre-indexing writeback marker, '!', just add it as a token
+    // operand. It's rather odd, but syntactically valid.
+    if (Parser.getTok().is(AsmToken::Exclaim)) {
+      Operands.push_back(ARMOperand::CreateToken("!",Parser.getTok().getLoc()));
+      Parser.Lex(); // Eat the '!'.
+    }
+
     return false;
   }