[llvm] r306687 - [llvm-objdump] Handle invalid instruction gracefully on ARM

[Eugene Leviant via llvm-commits]

Author: evgeny777
Date: Thu Jun 29 08:38:47 2017
New Revision: 306687

URL: http://llvm.org/viewvc/llvm-project?rev=306687&view=rev
Log:
[llvm-objdump] Handle invalid instruction gracefully on ARM

Differential revision: https://reviews.llvm.org/D34813

Added:
    llvm/trunk/test/tools/llvm-objdump/ARM/invalid-instruction.s
Modified:
    llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp

Modified: llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp?rev=306687&r1=306686&r2=306687&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp (original)
+++ llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp Thu Jun 29 08:38:47 2017
@@ -486,7 +486,7 @@ DecodeStatus ARMDisassembler::getInstruc
     }
   }
 
-  Size = 0;
+  Size = 4;
   return MCDisassembler::Fail;
 }
 

Added: llvm/trunk/test/tools/llvm-objdump/ARM/invalid-instruction.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-objdump/ARM/invalid-instruction.s?rev=306687&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-objdump/ARM/invalid-instruction.s (added)
+++ llvm/trunk/test/tools/llvm-objdump/ARM/invalid-instruction.s Thu Jun 29 08:38:47 2017
@@ -0,0 +1,9 @@
+ at RUN: llvm-mc -triple arm-unknown-linux -filetype=obj %s | llvm-objdump -d - | FileCheck %s
+
+.text
+  b l0
+  .inst 0xffffffff
+l0:
+
+ at CHECK:            0: 00 00 00 ea   b #0 <l0>
+ at CHECK-NEXT:       4: ff ff ff ff  <unknown>