diff options
Diffstat (limited to 'lib/Target/ARM/ARMInstrInfo.td')
| -rw-r--r-- | lib/Target/ARM/ARMInstrInfo.td | 105 |
1 files changed, 24 insertions, 81 deletions
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td index 818735561c..e2a6fd7bcf 100644 --- a/lib/Target/ARM/ARMInstrInfo.td +++ b/lib/Target/ARM/ARMInstrInfo.td @@ -1026,49 +1026,25 @@ multiclass AsI1_rbin_irs<bits<4> opcod, string opc, } /// AsI1_rbin_s_is - Same as AsI1_rbin_s_is except it sets 's' bit by default. -let hasPostISelHook = 1, isCodeGenOnly = 1, Defs = [CPSR] in { +/// +/// These opcodes will be converted to the real non-S opcodes by +/// AdjustInstrPostInstrSelection after giving then an optional CPSR operand. +let hasPostISelHook = 1, isCodeGenOnly = 1, isPseudo = 1, Defs = [CPSR] in { multiclass AsI1_rbin_s_is<bits<4> opcod, string opc, InstrItinClass iii, InstrItinClass iir, InstrItinClass iis, PatFrag opnode, bit Commutable = 0> { def ri : AsI1<opcod, (outs GPR:$Rd), (ins GPR:$Rn, so_imm:$imm), DPFrm, iii, opc, "\t$Rd, $Rn, $imm", - [(set GPR:$Rd, CPSR, (opnode so_imm:$imm, GPR:$Rn))]> { - bits<4> Rd; - bits<4> Rn; - bits<12> imm; - let Inst{25} = 1; - let Inst{19-16} = Rn; - let Inst{15-12} = Rd; - let Inst{11-0} = imm; - } + [(set GPR:$Rd, CPSR, (opnode so_imm:$imm, GPR:$Rn))]>; def rr : AsI1<opcod, (outs GPR:$Rd), (ins GPR:$Rn, GPR:$Rm), DPFrm, iir, opc, "\t$Rd, $Rn, $Rm", - [/* pattern left blank */]> { - bits<4> Rd; - bits<4> Rn; - bits<4> Rm; - let Inst{11-4} = 0b00000000; - let Inst{25} = 0; - let Inst{3-0} = Rm; - let Inst{15-12} = Rd; - let Inst{19-16} = Rn; - } + [/* pattern left blank */]>; def rsi : AsI1<opcod, (outs GPR:$Rd), (ins GPR:$Rn, so_reg_imm:$shift), DPSoRegImmFrm, iis, opc, "\t$Rd, $Rn, $shift", - [(set GPR:$Rd, CPSR, (opnode so_reg_imm:$shift, GPR:$Rn))]> { - bits<4> Rd; - bits<4> Rn; - bits<12> shift; - let Inst{25} = 0; - let Inst{19-16} = Rn; - let Inst{15-12} = Rd; - let Inst{11-5} = shift{11-5}; - let Inst{4} = 0; - let Inst{3-0} = shift{3-0}; - } + [(set GPR:$Rd, CPSR, (opnode so_reg_imm:$shift, GPR:$Rn))]>; def rsr : AsI1<opcod, (outs GPR:$Rd), (ins GPR:$Rn, so_reg_reg:$shift), DPSoRegRegFrm, @@ -1090,68 +1066,28 @@ multiclass AsI1_rbin_s_is<bits<4> opcod, string opc, } /// AsI1_bin_s_irs - Same as AsI1_bin_irs except it sets the 's' bit by default. -let hasPostISelHook = 1, isCodeGenOnly = 1, Defs = [CPSR] in { +/// +/// These opcodes will be converted to the real non-S opcodes by +/// AdjustInstrPostInstrSelection after giving then an optional CPSR operand. +let hasPostISelHook = 1, isCodeGenOnly = 1, isPseudo = 1, Defs = [CPSR] in { multiclass AsI1_bin_s_irs<bits<4> opcod, string opc, InstrItinClass iii, InstrItinClass iir, InstrItinClass iis, PatFrag opnode, bit Commutable = 0> { - let isReMaterializable = 1 in { def ri : AsI1<opcod, (outs GPR:$Rd), (ins GPR:$Rn, so_imm:$imm), DPFrm, iii, opc, "\t$Rd, $Rn, $imm", - [(set GPR:$Rd, CPSR, (opnode GPR:$Rn, so_imm:$imm))]> { - bits<4> Rd; - bits<4> Rn; - bits<12> imm; - let Inst{25} = 1; - let Inst{19-16} = Rn; - let Inst{15-12} = Rd; - let Inst{11-0} = imm; - } - } + [(set GPR:$Rd, CPSR, (opnode GPR:$Rn, so_imm:$imm))]>; def rr : AsI1<opcod, (outs GPR:$Rd), (ins GPR:$Rn, GPR:$Rm), DPFrm, iir, opc, "\t$Rd, $Rn, $Rm", - [(set GPR:$Rd, CPSR, (opnode GPR:$Rn, GPR:$Rm))]> { - bits<4> Rd; - bits<4> Rn; - bits<4> Rm; - let isCommutable = Commutable; - let Inst{25} = 0; - let Inst{19-16} = Rn; - let Inst{15-12} = Rd; - let Inst{11-4} = 0b00000000; - let Inst{3-0} = Rm; - } + [(set GPR:$Rd, CPSR, (opnode GPR:$Rn, GPR:$Rm))]>; def rsi : AsI1<opcod, (outs GPR:$Rd), (ins GPR:$Rn, so_reg_imm:$shift), DPSoRegImmFrm, iis, opc, "\t$Rd, $Rn, $shift", - [(set GPR:$Rd, CPSR, (opnode GPR:$Rn, so_reg_imm:$shift))]> { - bits<4> Rd; - bits<4> Rn; - bits<12> shift; - let Inst{25} = 0; - let Inst{19-16} = Rn; - let Inst{15-12} = Rd; - let Inst{11-5} = shift{11-5}; - let Inst{4} = 0; - let Inst{3-0} = shift{3-0}; - } + [(set GPR:$Rd, CPSR, (opnode GPR:$Rn, so_reg_imm:$shift))]>; def rsr : AsI1<opcod, (outs GPR:$Rd), (ins GPR:$Rn, so_reg_reg:$shift), DPSoRegRegFrm, iis, opc, "\t$Rd, $Rn, $shift", - [(set GPR:$Rd, CPSR, (opnode GPR:$Rn, so_reg_reg:$shift))]> { - bits<4> Rd; - bits<4> Rn; - bits<12> shift; - let Inst{25} = 0; - let Inst{20} = 1; - let Inst{19-16} = Rn; - let Inst{15-12} = Rd; - let Inst{11-8} = shift{11-8}; - let Inst{7} = 0; - let Inst{6-5} = shift{6-5}; - let Inst{4} = 1; - let Inst{3-0} = shift{3-0}; - } + [(set GPR:$Rd, CPSR, (opnode GPR:$Rn, so_reg_reg:$shift))]>; } } @@ -3122,8 +3058,15 @@ defm SUB : AsI1_bin_irs<0b0010, "sub", BinOpFrag<(sub node:$LHS, node:$RHS)>, "SUB">; // ADD and SUB with 's' bit set. -// FIXME: Eliminate them if we can write def : Pat patterns which defines -// CPSR and the implicit def of CPSR is not needed. +// +// Currently, t2ADDS/t2SUBS are pseudo opcodes that exist only in the +// selection DAG. They are "lowered" to real t2ADD/t2SUB opcodes by +// AdjustInstrPostInstrSelection where we determine whether or not to +// set the "s" bit based on CPSR liveness. +// +// FIXME: Eliminate t2ADDS/t2SUBS pseudo opcodes after adding tablegen +// support for an optional CPSR definition that corresponds to the DAG +// node's second value. We can then eliminate the implicit def of CPSR. defm ADDS : AsI1_bin_s_irs<0b0100, "add", IIC_iALUi, IIC_iALUr, IIC_iALUsr, BinOpFrag<(ARMaddc node:$LHS, node:$RHS)>, 1>; |