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Destination register operand is optional for ADC and SBC ARM.

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llvm-svn: 135052
This commit is contained in:
Jim Grosbach 2011-07-13 17:57:17 +00:00
parent 5db1296fcd
commit 7dbb39dffa
2 changed files with 60 additions and 5 deletions
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29
lib/Target/ARM/ARMInstrInfo.td
View File

@ -950,9 +950,9 @@ multiclass AI_exta_rrot_np<bits<8> opcod, string opc> {
}
/// AI1_adde_sube_irs - Define instructions and patterns for adde and sube.
let Uses = [CPSR] in {
multiclass AI1_adde_sube_irs<bits<4> opcod, string opc, PatFrag opnode,
bit Commutable = 0> {
string baseOpc, bit Commutable = 0> {
let Uses = [CPSR] in {
def ri : AsI1<opcod, (outs GPR:$Rd), (ins GPR:$Rn, so_imm:$imm),
DPFrm, IIC_iALUi, opc, "\t$Rd, $Rn, $imm",
[(set GPR:$Rd, (opnode GPR:$Rn, so_imm:$imm))]>,
@ -991,7 +991,24 @@ multiclass AI1_adde_sube_irs<bits<4> opcod, string opc, PatFrag opnode,
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
}
}
}
// Assembly aliases for optional destination operand when it's the same
// as the source operand.
def : InstAlias<!strconcat(opc, "${s}${p} $Rdn, $imm"),
(!cast<Instruction>(!strconcat(baseOpc, "ri")) GPR:$Rdn, GPR:$Rdn,
so_imm:$imm, pred:$p,
cc_out:$s)>,
Requires<[IsARM]>;
def : InstAlias<!strconcat(opc, "${s}${p} $Rdn, $Rm"),
(!cast<Instruction>(!strconcat(baseOpc, "rr")) GPR:$Rdn, GPR:$Rdn,
GPR:$Rm, pred:$p,
cc_out:$s)>,
Requires<[IsARM]>;
def : InstAlias<!strconcat(opc, "${s}${p} $Rdn, $shift"),
(!cast<Instruction>(!strconcat(baseOpc, "rs")) GPR:$Rdn, GPR:$Rdn,
so_reg:$shift, pred:$p,
cc_out:$s)>,
Requires<[IsARM]>;
}
// Carry setting variants
@ -2252,9 +2269,11 @@ defm SUBS : AI1_bin_s_irs<0b0010, "subs",
BinOpFrag<(subc node:$LHS, node:$RHS)>>;
defm ADC : AI1_adde_sube_irs<0b0101, "adc",
BinOpFrag<(adde_dead_carry node:$LHS, node:$RHS)>, 1>;
BinOpFrag<(adde_dead_carry node:$LHS, node:$RHS)>,
"ADC", 1>;
defm SBC : AI1_adde_sube_irs<0b0110, "sbc",
BinOpFrag<(sube_dead_carry node:$LHS, node:$RHS)>>;
BinOpFrag<(sube_dead_carry node:$LHS, node:$RHS)>,
"SBC">;
// ADC and SUBC with 's' bit set.
let usesCustomInserter = 1 in {

36
test/MC/ARM/basic-arm-instructions.s
View File

@ -60,6 +60,25 @@ _func:
adc r6, r7, r8, ror r9
adc r4, r5, r6, rrx
@ Destination register is optional
adc r5, r6
adc r4, r5, lsl #1
adc r4, r5, lsl #31
adc r4, r5, lsr #1
adc r4, r5, lsr #31
adc r4, r5, lsr #32
adc r4, r5, asr #1
adc r4, r5, asr #31
adc r4, r5, asr #32
adc r4, r5, ror #1
adc r4, r5, ror #31
adc r4, r5, rrx
adc r6, r7, lsl r9
adc r6, r7, lsr r9
adc r6, r7, asr r9
adc r6, r7, ror r9
adc r4, r5, rrx
@ CHECK: adc r4, r5, r6 @ encoding: [0x06,0x40,0xa5,0xe0]
@ CHECK: adc r4, r5, r6, lsl #1 @ encoding: [0x86,0x40,0xa5,0xe0]
@ -79,3 +98,20 @@ _func:
@ CHECK: adc r6, r7, r8, ror r9 @ encoding: [0x78,0x69,0xa7,0xe0]
@ CHECK: adc r4, r5, r6, rrx @ encoding: [0x66,0x40,0xa5,0xe0]
@ CHECK: adc r5, r5, r6 @ encoding: [0x06,0x50,0xa5,0xe0]
@ CHECK: adc r4, r4, r5, lsl #1 @ encoding: [0x85,0x40,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, lsl #31 @ encoding: [0x85,0x4f,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, lsr #1 @ encoding: [0xa5,0x40,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, lsr #31 @ encoding: [0xa5,0x4f,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, lsr #32 @ encoding: [0x25,0x40,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, asr #1 @ encoding: [0xc5,0x40,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, asr #31 @ encoding: [0xc5,0x4f,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, asr #32 @ encoding: [0x45,0x40,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, ror #1 @ encoding: [0xe5,0x40,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, ror #31 @ encoding: [0xe5,0x4f,0xa4,0xe0]
@ CHECK: adc r4, r4, r5, rrx @ encoding: [0x65,0x40,0xa4,0xe0]
@ CHECK: adc r6, r6, r7, lsl r9 @ encoding: [0x17,0x69,0xa6,0xe0]
@ CHECK: adc r6, r6, r7, lsr r9 @ encoding: [0x37,0x69,0xa6,0xe0]
@ CHECK: adc r6, r6, r7, asr r9 @ encoding: [0x57,0x69,0xa6,0xe0]
@ CHECK: adc r6, r6, r7, ror r9 @ encoding: [0x77,0x69,0xa6,0xe0]
@ CHECK: adc r4, r4, r5, rrx @ encoding: [0x65,0x40,0xa4,0xe0]