let Inst{11-0} = addr{11-0};
let AsmMatchConverter = "cvtLdWriteBackRegAddrMode2";
}
-def LDRBT : AI2ldstidx<1, 1, 0, (outs GPR:$Rt, GPR:$base_wb),
- (ins addrmode2:$addr), IndexModePost, LdFrm, IIC_iLoad_bh_ru,
- "ldrbt", "\t$Rt, $addr", "$addr.base = $base_wb", []> {
- // {17-14} Rn
- // {13} 1 == Rm, 0 == imm12
+
+def LDRBT_POST_REG : AI2ldstidx<1, 1, 0, (outs GPR:$Rt, GPR:$Rn_wb),
+ (ins addr_offset_none:$addr, am2offset_reg:$offset),
+ IndexModePost, LdFrm, IIC_iLoad_bh_ru,
+ "ldrbt", "\t$Rt, $addr, $offset",
+ "$addr.base = $Rn_wb", []> {
// {12} isAdd
// {11-0} imm12/Rm
- bits<18> addr;
- let Inst{25} = addr{13};
- let Inst{23} = addr{12};
+ bits<14> offset;
+ bits<4> addr;
+ let Inst{25} = 1;
+ let Inst{23} = offset{12};
let Inst{21} = 1; // overwrite
- let Inst{19-16} = addr{17-14};
- let Inst{11-0} = addr{11-0};
- let AsmMatchConverter = "cvtLdWriteBackRegAddrMode2";
+ let Inst{19-16} = addr;
+ let Inst{11-0} = offset{11-0};
+}
+
+def LDRBT_POST_IMM : AI2ldstidx<1, 1, 0, (outs GPR:$Rt, GPR:$Rn_wb),
+ (ins addr_offset_none:$addr, am2offset_imm:$offset),
+ IndexModePost, LdFrm, IIC_iLoad_bh_ru,
+ "ldrbt", "\t$Rt, $addr, $offset",
+ "$addr.base = $Rn_wb", []> {
+ // {12} isAdd
+ // {11-0} imm12/Rm
+ bits<14> offset;
+ bits<4> addr;
+ let Inst{25} = 0;
+ let Inst{23} = offset{12};
+ let Inst{21} = 1; // overwrite
+ let Inst{19-16} = addr;
+ let Inst{11-0} = offset{11-0};
}
multiclass AI3ldrT<bits<4> op, string opc> {
@ CHECK: ldr r8, [r4], -r5 @ encoding: [0x05,0x80,0x14,0xe6]
@ CHECK: ldr r7, [r12, -r1, lsl #15] @ encoding: [0x81,0x77,0x1c,0xe7]
@ CHECK: ldr r5, [r2], r9, asr #15 @ encoding: [0xc9,0x57,0x92,0xe6]
+
+
+@------------------------------------------------------------------------------
+@ LDRBT
+@------------------------------------------------------------------------------
+@ FIXME: Optional offset operand.
+ ldrbt r3, [r1], #4
+ ldrbt r2, [r8], #-8
+ ldrbt r8, [r7], r6
+ ldrbt r1, [r2], -r6, lsl #12
+
+
+@ CHECK: ldrbt r3, [r1], #4 @ encoding: [0x04,0x30,0xf1,0xe4]
+@ CHECK: ldrbt r2, [r8], #-8 @ encoding: [0x08,0x20,0x78,0xe4]
+@ CHECK: ldrbt r8, [r7], r6 @ encoding: [0x06,0x80,0xf7,0xe6]
+@ CHECK: ldrbt r1, [r2], -r6, lsl #12 @ encoding: [0x06,0x16,0x72,0xe6]