[llvm-commits] [llvm] r140426 - in /llvm/trunk: lib/Target/ARM/AsmParser/ARMAsmParser.cpp test/MC/ARM/basic-thumb2-instructions.s

[Owen Anderson]

Author: resistor
Date: Fri Sep 23 17:25:02 2011
New Revision: 140426

URL: http://llvm.org/viewvc/llvm-project?rev=140426&view=rev
Log:
Teach the Thumb2 AsmParser to accept pre-indexed loads/stores with an offset of #-0.

Modified:
    llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
    llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s

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=140426&r1=140425&r2=140426&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp (original)
+++ llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp Fri Sep 23 17:25:02 2011
@@ -780,7 +780,7 @@
     // Immediate offset in range [-255, 255].
     if (!Mem.OffsetImm) return true;
     int64_t Val = Mem.OffsetImm->getValue();
-    return Val > -256 && Val < 256;
+    return (Val == INT32_MIN) || (Val > -256 && Val < 256);
   }
   bool isMemPosImm8Offset() const {
     if (Kind != Memory || Mem.OffsetRegNum != 0)

Modified: llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s?rev=140426&r1=140425&r2=140426&view=diff
==============================================================================
--- llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s (original)
+++ llvm/trunk/test/MC/ARM/basic-thumb2-instructions.s Fri Sep 23 17:25:02 2011
@@ -2236,6 +2236,7 @@
         strb lr, [r3], #255
         strb r9, [r2], #4
         strb r3, [sp], #-4
+        strb r4, [r8, #-0]!
 
 @ CHECK: strb	r5, [r5, #-4]           @ encoding: [0x05,0xf8,0x04,0x5c]
 @ CHECK: strb.w	r5, [r6, #32]           @ encoding: [0x86,0xf8,0x20,0x50]
@@ -2248,6 +2249,7 @@
 @ CHECK: strb	lr, [r3], #255          @ encoding: [0x03,0xf8,0xff,0xeb]
 @ CHECK: strb	r9, [r2], #4            @ encoding: [0x02,0xf8,0x04,0x9b]
 @ CHECK: strb	r3, [sp], #-4           @ encoding: [0x0d,0xf8,0x04,0x39]
+@ CHECK: strb	r4, [r8, #-0]!          @ encoding: [0x08,0xf8,0x00,0x4d]
 
 
 @------------------------------------------------------------------------------