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Teach the Thumb2 AsmParser to accept pre-indexed loads/stores with an offset of #-0.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140426 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2011-09-23 22:25:02 +00:00
parent 11ebe3d7c1
commit 4d2a00147d
2 changed files with 3 additions and 1 deletions
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2
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
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@ -780,7 +780,7 @@ public:
// 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)

2
test/MC/ARM/basic-thumb2-instructions.s
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@ -2236,6 +2236,7 @@ _func:
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 @@ _func:
@ 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]
@------------------------------------------------------------------------------