diff options
Diffstat (limited to 'lib/Target/ARM/ARMInstrInfo.td')
| -rw-r--r-- | lib/Target/ARM/ARMInstrInfo.td | 42 |
1 files changed, 30 insertions, 12 deletions
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td index 09ce552..c0724f5 100644 --- a/lib/Target/ARM/ARMInstrInfo.td +++ b/lib/Target/ARM/ARMInstrInfo.td @@ -2240,11 +2240,20 @@ def REVSH : AMiscA1I<0b01101111, (outs GPR:$dst), (ins GPR:$src), IIC_iUNAr, let Inst{19-16} = 0b1111; } +def lsl_shift_imm : SDNodeXForm<imm, [{ + unsigned Sh = ARM_AM::getSORegOpc(ARM_AM::lsl, N->getZExtValue()); + return CurDAG->getTargetConstant(Sh, MVT::i32); +}]>; + +def lsl_amt : PatLeaf<(i32 imm), [{ + return (N->getZExtValue() < 32); +}], lsl_shift_imm>; + def PKHBT : AMiscA1I<0b01101000, (outs GPR:$dst), - (ins GPR:$src1, GPR:$src2, i32imm:$shamt), - IIC_iALUsi, "pkhbt", "\t$dst, $src1, $src2, lsl $shamt", + (ins GPR:$src1, GPR:$src2, shift_imm:$sh), + IIC_iALUsi, "pkhbt", "\t$dst, $src1, $src2$sh", [(set GPR:$dst, (or (and GPR:$src1, 0xFFFF), - (and (shl GPR:$src2, (i32 imm:$shamt)), + (and (shl GPR:$src2, lsl_amt:$sh), 0xFFFF0000)))]>, Requires<[IsARM, HasV6]> { let Inst{6-4} = 0b001; @@ -2253,28 +2262,37 @@ def PKHBT : AMiscA1I<0b01101000, (outs GPR:$dst), // Alternate cases for PKHBT where identities eliminate some nodes. def : ARMV6Pat<(or (and GPR:$src1, 0xFFFF), (and GPR:$src2, 0xFFFF0000)), (PKHBT GPR:$src1, GPR:$src2, 0)>; -def : ARMV6Pat<(or (and GPR:$src1, 0xFFFF), (shl GPR:$src2, imm16_31:$shamt)), - (PKHBT GPR:$src1, GPR:$src2, imm16_31:$shamt)>; +def : ARMV6Pat<(or (and GPR:$src1, 0xFFFF), (shl GPR:$src2, imm16_31:$sh)), + (PKHBT GPR:$src1, GPR:$src2, (lsl_shift_imm imm16_31:$sh))>; +def asr_shift_imm : SDNodeXForm<imm, [{ + unsigned Sh = ARM_AM::getSORegOpc(ARM_AM::asr, N->getZExtValue()); + return CurDAG->getTargetConstant(Sh, MVT::i32); +}]>; + +def asr_amt : PatLeaf<(i32 imm), [{ + return (N->getZExtValue() <= 32); +}], asr_shift_imm>; // Note: Shifts of 1-15 bits will be transformed to srl instead of sra and // will match the pattern below. def PKHTB : AMiscA1I<0b01101000, (outs GPR:$dst), - (ins GPR:$src1, GPR:$src2, i32imm:$shamt), - IIC_iALUsi, "pkhtb", "\t$dst, $src1, $src2, asr $shamt", + (ins GPR:$src1, GPR:$src2, shift_imm:$sh), + IIC_iALUsi, "pkhtb", "\t$dst, $src1, $src2$sh", [(set GPR:$dst, (or (and GPR:$src1, 0xFFFF0000), - (and (sra GPR:$src2, imm16_31:$shamt), - 0xFFFF)))]>, Requires<[IsARM, HasV6]> { + (and (sra GPR:$src2, asr_amt:$sh), + 0xFFFF)))]>, + Requires<[IsARM, HasV6]> { let Inst{6-4} = 0b101; } // Alternate cases for PKHTB where identities eliminate some nodes. Note that // a shift amount of 0 is *not legal* here, it is PKHBT instead. def : ARMV6Pat<(or (and GPR:$src1, 0xFFFF0000), (srl GPR:$src2, imm16_31:$sh)), - (PKHTB GPR:$src1, GPR:$src2, imm16_31:$sh)>; + (PKHTB GPR:$src1, GPR:$src2, (asr_shift_imm imm16_31:$sh))>; def : ARMV6Pat<(or (and GPR:$src1, 0xFFFF0000), - (and (srl GPR:$src2, imm1_15:$shamt), 0xFFFF)), - (PKHTB GPR:$src1, GPR:$src2, imm1_15:$shamt)>; + (and (srl GPR:$src2, imm1_15:$sh), 0xFFFF)), + (PKHTB GPR:$src1, GPR:$src2, (asr_shift_imm imm1_15:$sh))>; //===----------------------------------------------------------------------===// // Comparison Instructions... |