diff options
Diffstat (limited to 'llvm/lib/Target/ARM')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMInstrThumb2.td | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/llvm/lib/Target/ARM/ARMInstrThumb2.td b/llvm/lib/Target/ARM/ARMInstrThumb2.td index 002d64a2d03..d40a0746f85 100644 --- a/llvm/lib/Target/ARM/ARMInstrThumb2.td +++ b/llvm/lib/Target/ARM/ARMInstrThumb2.td @@ -130,8 +130,9 @@ def imm0_4095_neg : Operand<i32>, PatLeaf<(i32 imm), [{ let ParserMatchClass = imm0_4095_neg_asmoperand; } -def imm0_255_neg : PatLeaf<(i32 imm), [{ - return (uint32_t)(-N->getZExtValue()) < 255; +def imm1_255_neg : PatLeaf<(i32 imm), [{ + uint32_t Val = -N->getZExtValue(); + return (Val > 0 && Val < 255); }], imm_neg_XFORM>; def imm0_255_not : PatLeaf<(i32 imm), [{ @@ -1928,8 +1929,8 @@ defm t2RSBS : T2I_rbin_s_is <BinOpFrag<(ARMsubc node:$LHS, node:$RHS)>>; // The AddedComplexity preferences the first variant over the others since // it can be shrunk to a 16-bit wide encoding, while the others cannot. let AddedComplexity = 1 in -def : T2Pat<(add GPR:$src, imm0_255_neg:$imm), - (t2SUBri GPR:$src, imm0_255_neg:$imm)>; +def : T2Pat<(add GPR:$src, imm1_255_neg:$imm), + (t2SUBri GPR:$src, imm1_255_neg:$imm)>; def : T2Pat<(add GPR:$src, t2_so_imm_neg:$imm), (t2SUBri GPR:$src, t2_so_imm_neg:$imm)>; def : T2Pat<(add GPR:$src, imm0_4095_neg:$imm), @@ -1938,8 +1939,8 @@ def : T2Pat<(add GPR:$src, imm0_65535_neg:$imm), (t2SUBrr GPR:$src, (t2MOVi16 (imm_neg_XFORM imm:$imm)))>; let AddedComplexity = 1 in -def : T2Pat<(ARMaddc rGPR:$src, imm0_255_neg:$imm), - (t2SUBSri rGPR:$src, imm0_255_neg:$imm)>; +def : T2Pat<(ARMaddc rGPR:$src, imm1_255_neg:$imm), + (t2SUBSri rGPR:$src, imm1_255_neg:$imm)>; def : T2Pat<(ARMaddc rGPR:$src, t2_so_imm_neg:$imm), (t2SUBSri rGPR:$src, t2_so_imm_neg:$imm)>; def : T2Pat<(ARMaddc rGPR:$src, imm0_65535_neg:$imm), |
