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Thumb2 encoding choice correction for PLD. 

Using encoding T1 for offset of #0 and encoding T2 for #-0.

rdar://10532413

llvm-svn: 145919
This commit is contained in:
Jim Grosbach 2011-12-06 04:49:29 +00:00
parent 5f623229ec
commit 175c7d0da5
2 changed files with 6 additions and 2 deletions
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4
llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
View File

@ -916,9 +916,9 @@ public:
if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)
return false;
// Immediate offset in range [-255, -1].
if (!Memory.OffsetImm) return true;
if (!Memory.OffsetImm) return false;
int64_t Val = Memory.OffsetImm->getValue();
return Val > -256 && Val < 0;
return (Val == INT32_MIN) || (Val > -256 && Val < 0);
}
bool isMemUImm12Offset() const {
if (!isMemory() || Memory.OffsetRegNum != 0 || Memory.Alignment != 0)

4
llvm/test/MC/ARM/basic-thumb2-instructions.s
View File

@ -1371,12 +1371,16 @@ _func:
pld [r6, #33]
pld [r6, #257]
pld [r7, #257]
pld [r1, #0]
pld [r1, #-0]
@ CHECK: pld [r5, #-4] @ encoding: [0x15,0xf8,0x04,0xfc]
@ CHECK: pld [r6, #32] @ encoding: [0x96,0xf8,0x20,0xf0]
@ CHECK: pld [r6, #33] @ encoding: [0x96,0xf8,0x21,0xf0]
@ CHECK: pld [r6, #257] @ encoding: [0x96,0xf8,0x01,0xf1]
@ CHECK: pld [r7, #257] @ encoding: [0x97,0xf8,0x01,0xf1]
@ CHECK: pld [r1] @ encoding: [0x91,0xf8,0x00,0xf0]
@ CHECK: pld [r1, #-0] @ encoding: [0x11,0xf8,0x00,0xfc]
@------------------------------------------------------------------------------