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Oct 21, 2024
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[LoongArch] Minor refinement to monotonic atomic semantics. #112681

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c463953
fix: Support LoongArch atomic memory operations with monotonic semantics
tangaac Oct 16, 2024
a9452c1
refactor the matching pattern of atomic operations
tangaac Oct 18, 2024
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75 changes: 33 additions & 42 deletions llvm/lib/Target/LoongArch/LoongArchInstrInfo.td
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Original file line number Diff line number Diff line change
Expand Up @@ -2075,58 +2075,49 @@ multiclass ternary_atomic_op_failure_ord {
defm atomic_cmp_swap_i32 : ternary_atomic_op_failure_ord;
defm atomic_cmp_swap_i64 : ternary_atomic_op_failure_ord;

// Atomic operation for word and double word
multiclass binary_atomic_op_wd<string inst, string op, string signed = ""> {
def : Pat<(!cast<PatFrag>(op#"_i32_monotonic") GPR:$rj, GPR:$rk),
(!cast<Instruction>(inst#"_W"#signed) GPR:$rk, GPR:$rj)>;
def : Pat<(!cast<PatFrag>(op#"_i64_monotonic") GPR:$rj, GPR:$rk),
(!cast<Instruction>(inst#"_D"#signed) GPR:$rk, GPR:$rj)>;

def : Pat<(!cast<PatFrag>(op#"_i32") GPR:$rj, GPR:$rk),
(!cast<Instruction>(inst#"__DB_W"#signed) GPR:$rk, GPR:$rj)>;
def : Pat<(!cast<PatFrag>(op#"_i64") GPR:$rj, GPR:$rk),
(!cast<Instruction>(inst#"__DB_D"#signed) GPR:$rk, GPR:$rj)>;
}

let Predicates = [IsLA64] in {
def : AtomicPat<int_loongarch_masked_atomicrmw_xchg_i64,
PseudoMaskedAtomicSwap32>;
def : Pat<(atomic_swap_i32 GPR:$addr, GPR:$incr),
(AMSWAP__DB_W GPR:$incr, GPR:$addr)>;
def : Pat<(atomic_swap_i64 GPR:$addr, GPR:$incr),
(AMSWAP__DB_D GPR:$incr, GPR:$addr)>;
def : Pat<(atomic_load_add_i64 GPR:$rj, GPR:$rk),
(AMADD__DB_D GPR:$rk, GPR:$rj)>;
def : AtomicPat<int_loongarch_masked_atomicrmw_add_i64,
PseudoMaskedAtomicLoadAdd32>;

defm : binary_atomic_op_wd<"AMSWAP", "atomic_swap">;
defm : binary_atomic_op_wd<"AMADD", "atomic_load_add">;
defm : binary_atomic_op_wd<"AMAND", "atomic_load_and">;
defm : binary_atomic_op_wd<"AMOR", "atomic_load_or">;
defm : binary_atomic_op_wd<"AMXOR", "atomic_load_xor">;
defm : binary_atomic_op_wd<"AMMIN", "atomic_load_umin", "U">;
defm : binary_atomic_op_wd<"AMMAX", "atomic_load_umax", "U">;
defm : binary_atomic_op_wd<"AMMIN", "atomic_load_min">;
defm : binary_atomic_op_wd<"AMMAX", "atomic_load_max">;
def : Pat<(atomic_load_sub_i32_monotonic GPR:$rj, GPR:$rk),
(AMADD_W (SUB_W R0, GPR:$rk), GPR:$rj)>;
def : Pat<(atomic_load_sub_i64_monotonic GPR:$rj, GPR:$rk),
(AMADD_D (SUB_D R0, GPR:$rk), GPR:$rj)>;

def : Pat<(atomic_load_sub_i32 GPR:$rj, GPR:$rk),
(AMADD__DB_W (SUB_W R0, GPR:$rk), GPR:$rj)>;
def : Pat<(atomic_load_sub_i64 GPR:$rj, GPR:$rk),
(AMADD__DB_D (SUB_D R0, GPR:$rk), GPR:$rj)>;

def : AtomicPat<int_loongarch_masked_atomicrmw_xchg_i64,
PseudoMaskedAtomicSwap32>;
def : AtomicPat<int_loongarch_masked_atomicrmw_add_i64,
PseudoMaskedAtomicLoadAdd32>;
def : AtomicPat<int_loongarch_masked_atomicrmw_sub_i64,
PseudoMaskedAtomicLoadSub32>;
defm : PseudoBinPat<"atomic_load_nand_i64", PseudoAtomicLoadNand64>;
def : AtomicPat<int_loongarch_masked_atomicrmw_nand_i64,
PseudoMaskedAtomicLoadNand32>;
def : Pat<(atomic_load_add_i32 GPR:$rj, GPR:$rk),
(AMADD__DB_W GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_and_i32 GPR:$rj, GPR:$rk),
(AMAND__DB_W GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_and_i64 GPR:$rj, GPR:$rk),
(AMAND__DB_D GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_or_i32 GPR:$rj, GPR:$rk),
(AMOR__DB_W GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_or_i64 GPR:$rj, GPR:$rk),
(AMOR__DB_D GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_xor_i32 GPR:$rj, GPR:$rk),
(AMXOR__DB_W GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_xor_i64 GPR:$rj, GPR:$rk),
(AMXOR__DB_D GPR:$rk, GPR:$rj)>;

def : Pat<(atomic_load_umin_i32 GPR:$rj, GPR:$rk),
(AMMIN__DB_WU GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_umin_i64 GPR:$rj, GPR:$rk),
(AMMIN__DB_DU GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_umax_i32 GPR:$rj, GPR:$rk),
(AMMAX__DB_WU GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_umax_i64 GPR:$rj, GPR:$rk),
(AMMAX__DB_DU GPR:$rk, GPR:$rj)>;

def : Pat<(atomic_load_min_i32 GPR:$rj, GPR:$rk),
(AMMIN__DB_W GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_min_i64 GPR:$rj, GPR:$rk),
(AMMIN__DB_D GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_max_i32 GPR:$rj, GPR:$rk),
(AMMAX__DB_W GPR:$rk, GPR:$rj)>;
def : Pat<(atomic_load_max_i64 GPR:$rj, GPR:$rk),
(AMMAX__DB_D GPR:$rk, GPR:$rj)>;

def : AtomicPat<int_loongarch_masked_atomicrmw_umax_i64,
PseudoMaskedAtomicLoadUMax32>;
Expand Down
16 changes: 8 additions & 8 deletions llvm/test/CodeGen/LoongArch/ir-instruction/atomicrmw-minmax.ll
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Expand Up @@ -1368,7 +1368,7 @@ define i16 @atomicrmw_umax_i16_monotonic(ptr %a, i16 %b) nounwind {
define i32 @atomicrmw_umax_i32_monotonic(ptr %a, i32 %b) nounwind {
; LA64-LABEL: atomicrmw_umax_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: ammax_db.wu $a2, $a1, $a0
; LA64-NEXT: ammax.wu $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw umax ptr %a, i32 %b monotonic
Expand All @@ -1378,7 +1378,7 @@ define i32 @atomicrmw_umax_i32_monotonic(ptr %a, i32 %b) nounwind {
define i64 @atomicrmw_umax_i64_monotonic(ptr %a, i64 %b) nounwind {
; LA64-LABEL: atomicrmw_umax_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: ammax_db.du $a2, $a1, $a0
; LA64-NEXT: ammax.du $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw umax ptr %a, i64 %b monotonic
Expand Down Expand Up @@ -1445,7 +1445,7 @@ define i16 @atomicrmw_umin_i16_monotonic(ptr %a, i16 %b) nounwind {
define i32 @atomicrmw_umin_i32_monotonic(ptr %a, i32 %b) nounwind {
; LA64-LABEL: atomicrmw_umin_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: ammin_db.wu $a2, $a1, $a0
; LA64-NEXT: ammin.wu $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw umin ptr %a, i32 %b monotonic
Expand All @@ -1455,7 +1455,7 @@ define i32 @atomicrmw_umin_i32_monotonic(ptr %a, i32 %b) nounwind {
define i64 @atomicrmw_umin_i64_monotonic(ptr %a, i64 %b) nounwind {
; LA64-LABEL: atomicrmw_umin_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: ammin_db.du $a2, $a1, $a0
; LA64-NEXT: ammin.du $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw umin ptr %a, i64 %b monotonic
Expand Down Expand Up @@ -1531,7 +1531,7 @@ define i16 @atomicrmw_max_i16_monotonic(ptr %a, i16 %b) nounwind {
define i32 @atomicrmw_max_i32_monotonic(ptr %a, i32 %b) nounwind {
; LA64-LABEL: atomicrmw_max_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: ammax_db.w $a2, $a1, $a0
; LA64-NEXT: ammax.w $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw max ptr %a, i32 %b monotonic
Expand All @@ -1541,7 +1541,7 @@ define i32 @atomicrmw_max_i32_monotonic(ptr %a, i32 %b) nounwind {
define i64 @atomicrmw_max_i64_monotonic(ptr %a, i64 %b) nounwind {
; LA64-LABEL: atomicrmw_max_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: ammax_db.d $a2, $a1, $a0
; LA64-NEXT: ammax.d $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw max ptr %a, i64 %b monotonic
Expand Down Expand Up @@ -1617,7 +1617,7 @@ define i16 @atomicrmw_min_i16_monotonic(ptr %a, i16 %b) nounwind {
define i32 @atomicrmw_min_i32_monotonic(ptr %a, i32 %b) nounwind {
; LA64-LABEL: atomicrmw_min_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: ammin_db.w $a2, $a1, $a0
; LA64-NEXT: ammin.w $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw min ptr %a, i32 %b monotonic
Expand All @@ -1627,7 +1627,7 @@ define i32 @atomicrmw_min_i32_monotonic(ptr %a, i32 %b) nounwind {
define i64 @atomicrmw_min_i64_monotonic(ptr %a, i64 %b) nounwind {
; LA64-LABEL: atomicrmw_min_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: ammin_db.d $a2, $a1, $a0
; LA64-NEXT: ammin.d $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw min ptr %a, i64 %b monotonic
Expand Down
44 changes: 22 additions & 22 deletions llvm/test/CodeGen/LoongArch/ir-instruction/atomicrmw.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -3982,7 +3982,7 @@ define i8 @atomicrmw_xchg_0_i8_monotonic(ptr %a) nounwind {
; LA64-NEXT: ori $a2, $zero, 255
; LA64-NEXT: sll.w $a2, $a2, $a1
; LA64-NEXT: nor $a2, $a2, $zero
; LA64-NEXT: amand_db.w $a3, $a2, $a0
; LA64-NEXT: amand.w $a3, $a2, $a0
; LA64-NEXT: srl.w $a0, $a3, $a1
; LA64-NEXT: ret
%1 = atomicrmw xchg ptr %a, i8 0 monotonic
Expand Down Expand Up @@ -4011,7 +4011,7 @@ define i8 @atomicrmw_xchg_minus_1_i8_monotonic(ptr %a) nounwind {
; LA64-NEXT: bstrins.d $a0, $zero, 1, 0
; LA64-NEXT: ori $a2, $zero, 255
; LA64-NEXT: sll.w $a2, $a2, $a1
; LA64-NEXT: amor_db.w $a3, $a2, $a0
; LA64-NEXT: amor.w $a3, $a2, $a0
; LA64-NEXT: srl.w $a0, $a3, $a1
; LA64-NEXT: ret
%1 = atomicrmw xchg ptr %a, i8 -1 monotonic
Expand Down Expand Up @@ -4090,7 +4090,7 @@ define i16 @atomicrmw_xchg_0_i16_monotonic(ptr %a) nounwind {
; LA64-NEXT: ori $a2, $a2, 4095
; LA64-NEXT: sll.w $a2, $a2, $a1
; LA64-NEXT: nor $a2, $a2, $zero
; LA64-NEXT: amand_db.w $a3, $a2, $a0
; LA64-NEXT: amand.w $a3, $a2, $a0
; LA64-NEXT: srl.w $a0, $a3, $a1
; LA64-NEXT: ret
%1 = atomicrmw xchg ptr %a, i16 0 monotonic
Expand Down Expand Up @@ -4121,7 +4121,7 @@ define i16 @atomicrmw_xchg_minus_1_i16_monotonic(ptr %a) nounwind {
; LA64-NEXT: lu12i.w $a2, 15
; LA64-NEXT: ori $a2, $a2, 4095
; LA64-NEXT: sll.w $a2, $a2, $a1
; LA64-NEXT: amor_db.w $a3, $a2, $a0
; LA64-NEXT: amor.w $a3, $a2, $a0
; LA64-NEXT: srl.w $a0, $a3, $a1
; LA64-NEXT: ret
%1 = atomicrmw xchg ptr %a, i16 -1 monotonic
Expand All @@ -4142,7 +4142,7 @@ define i32 @atomicrmw_xchg_i32_monotonic(ptr %a, i32 %b) nounwind {
;
; LA64-LABEL: atomicrmw_xchg_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amswap_db.w $a2, $a1, $a0
; LA64-NEXT: amswap.w $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw xchg ptr %a, i32 %b monotonic
Expand All @@ -4162,7 +4162,7 @@ define i64 @atomicrmw_xchg_i64_monotonic(ptr %a, i64 %b) nounwind {
;
; LA64-LABEL: atomicrmw_xchg_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amswap_db.d $a2, $a1, $a0
; LA64-NEXT: amswap.d $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw xchg ptr %a, i64 %b monotonic
Expand Down Expand Up @@ -4273,7 +4273,7 @@ define i32 @atomicrmw_add_i32_monotonic(ptr %a, i32 %b) nounwind {
;
; LA64-LABEL: atomicrmw_add_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amadd_db.w $a2, $a1, $a0
; LA64-NEXT: amadd.w $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw add ptr %a, i32 %b monotonic
Expand All @@ -4293,7 +4293,7 @@ define i64 @atomicrmw_add_i64_monotonic(ptr %a, i64 %b) nounwind {
;
; LA64-LABEL: atomicrmw_add_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amadd_db.d $a2, $a1, $a0
; LA64-NEXT: amadd.d $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw add ptr %a, i64 %b monotonic
Expand Down Expand Up @@ -4405,7 +4405,7 @@ define i32 @atomicrmw_sub_i32_monotonic(ptr %a, i32 %b) nounwind {
; LA64-LABEL: atomicrmw_sub_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: sub.w $a2, $zero, $a1
; LA64-NEXT: amadd_db.w $a1, $a2, $a0
; LA64-NEXT: amadd.w $a1, $a2, $a0
; LA64-NEXT: move $a0, $a1
; LA64-NEXT: ret
%1 = atomicrmw sub ptr %a, i32 %b monotonic
Expand All @@ -4426,7 +4426,7 @@ define i64 @atomicrmw_sub_i64_monotonic(ptr %a, i64 %b) nounwind {
; LA64-LABEL: atomicrmw_sub_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: sub.d $a2, $zero, $a1
; LA64-NEXT: amadd_db.d $a1, $a2, $a0
; LA64-NEXT: amadd.d $a1, $a2, $a0
; LA64-NEXT: move $a0, $a1
; LA64-NEXT: ret
%1 = atomicrmw sub ptr %a, i64 %b monotonic
Expand Down Expand Up @@ -4609,7 +4609,7 @@ define i8 @atomicrmw_and_i8_monotonic(ptr %a, i8 %b) nounwind {
; LA64-NEXT: andi $a1, $a1, 255
; LA64-NEXT: sll.w $a1, $a1, $a2
; LA64-NEXT: orn $a1, $a1, $a3
; LA64-NEXT: amand_db.w $a3, $a1, $a0
; LA64-NEXT: amand.w $a3, $a1, $a0
; LA64-NEXT: srl.w $a0, $a3, $a2
; LA64-NEXT: ret
%1 = atomicrmw and ptr %a, i8 %b monotonic
Expand Down Expand Up @@ -4646,7 +4646,7 @@ define i16 @atomicrmw_and_i16_monotonic(ptr %a, i16 %b) nounwind {
; LA64-NEXT: bstrpick.d $a1, $a1, 15, 0
; LA64-NEXT: sll.w $a1, $a1, $a2
; LA64-NEXT: orn $a1, $a1, $a3
; LA64-NEXT: amand_db.w $a3, $a1, $a0
; LA64-NEXT: amand.w $a3, $a1, $a0
; LA64-NEXT: srl.w $a0, $a3, $a2
; LA64-NEXT: ret
%1 = atomicrmw and ptr %a, i16 %b monotonic
Expand All @@ -4667,7 +4667,7 @@ define i32 @atomicrmw_and_i32_monotonic(ptr %a, i32 %b) nounwind {
;
; LA64-LABEL: atomicrmw_and_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amand_db.w $a2, $a1, $a0
; LA64-NEXT: amand.w $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw and ptr %a, i32 %b monotonic
Expand All @@ -4687,7 +4687,7 @@ define i64 @atomicrmw_and_i64_monotonic(ptr %a, i64 %b) nounwind {
;
; LA64-LABEL: atomicrmw_and_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amand_db.d $a2, $a1, $a0
; LA64-NEXT: amand.d $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw and ptr %a, i64 %b monotonic
Expand Down Expand Up @@ -4716,7 +4716,7 @@ define i8 @atomicrmw_or_i8_monotonic(ptr %a, i8 %b) nounwind {
; LA64-NEXT: bstrins.d $a0, $zero, 1, 0
; LA64-NEXT: andi $a1, $a1, 255
; LA64-NEXT: sll.w $a1, $a1, $a2
; LA64-NEXT: amor_db.w $a3, $a1, $a0
; LA64-NEXT: amor.w $a3, $a1, $a0
; LA64-NEXT: srl.w $a0, $a3, $a2
; LA64-NEXT: ret
%1 = atomicrmw or ptr %a, i8 %b monotonic
Expand Down Expand Up @@ -4745,7 +4745,7 @@ define i16 @atomicrmw_or_i16_monotonic(ptr %a, i16 %b) nounwind {
; LA64-NEXT: bstrins.d $a0, $zero, 1, 0
; LA64-NEXT: bstrpick.d $a1, $a1, 15, 0
; LA64-NEXT: sll.w $a1, $a1, $a2
; LA64-NEXT: amor_db.w $a3, $a1, $a0
; LA64-NEXT: amor.w $a3, $a1, $a0
; LA64-NEXT: srl.w $a0, $a3, $a2
; LA64-NEXT: ret
%1 = atomicrmw or ptr %a, i16 %b monotonic
Expand All @@ -4766,7 +4766,7 @@ define i32 @atomicrmw_or_i32_monotonic(ptr %a, i32 %b) nounwind {
;
; LA64-LABEL: atomicrmw_or_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amor_db.w $a2, $a1, $a0
; LA64-NEXT: amor.w $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw or ptr %a, i32 %b monotonic
Expand All @@ -4786,7 +4786,7 @@ define i64 @atomicrmw_or_i64_monotonic(ptr %a, i64 %b) nounwind {
;
; LA64-LABEL: atomicrmw_or_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amor_db.d $a2, $a1, $a0
; LA64-NEXT: amor.d $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw or ptr %a, i64 %b monotonic
Expand Down Expand Up @@ -4815,7 +4815,7 @@ define i8 @atomicrmw_xor_i8_monotonic(ptr %a, i8 %b) nounwind {
; LA64-NEXT: bstrins.d $a0, $zero, 1, 0
; LA64-NEXT: andi $a1, $a1, 255
; LA64-NEXT: sll.w $a1, $a1, $a2
; LA64-NEXT: amxor_db.w $a3, $a1, $a0
; LA64-NEXT: amxor.w $a3, $a1, $a0
; LA64-NEXT: srl.w $a0, $a3, $a2
; LA64-NEXT: ret
%1 = atomicrmw xor ptr %a, i8 %b monotonic
Expand Down Expand Up @@ -4844,7 +4844,7 @@ define i16 @atomicrmw_xor_i16_monotonic(ptr %a, i16 %b) nounwind {
; LA64-NEXT: bstrins.d $a0, $zero, 1, 0
; LA64-NEXT: bstrpick.d $a1, $a1, 15, 0
; LA64-NEXT: sll.w $a1, $a1, $a2
; LA64-NEXT: amxor_db.w $a3, $a1, $a0
; LA64-NEXT: amxor.w $a3, $a1, $a0
; LA64-NEXT: srl.w $a0, $a3, $a2
; LA64-NEXT: ret
%1 = atomicrmw xor ptr %a, i16 %b monotonic
Expand All @@ -4865,7 +4865,7 @@ define i32 @atomicrmw_xor_i32_monotonic(ptr %a, i32 %b) nounwind {
;
; LA64-LABEL: atomicrmw_xor_i32_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amxor_db.w $a2, $a1, $a0
; LA64-NEXT: amxor.w $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw xor ptr %a, i32 %b monotonic
Expand All @@ -4885,7 +4885,7 @@ define i64 @atomicrmw_xor_i64_monotonic(ptr %a, i64 %b) nounwind {
;
; LA64-LABEL: atomicrmw_xor_i64_monotonic:
; LA64: # %bb.0:
; LA64-NEXT: amxor_db.d $a2, $a1, $a0
; LA64-NEXT: amxor.d $a2, $a1, $a0
; LA64-NEXT: move $a0, $a2
; LA64-NEXT: ret
%1 = atomicrmw xor ptr %a, i64 %b monotonic
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