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Differential D143506 Diff 496932 llvm/test/CodeGen/AArch64/Atomics/aarch64-atomic-store-lse2_lse128.ll

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llvm/test/CodeGen/AArch64/Atomics/aarch64-atomic-store-lse2_lse128.ll

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; CHECK-LABEL: store_atomic_i128_aligned_unordered: ; CHECK-LABEL: store_atomic_i128_aligned_unordered:
; CHECK: stp x0, x1, [x2] ; CHECK: stp x0, x1, [x2]
store atomic i128 %value, ptr %ptr unordered, align 16 store atomic i128 %value, ptr %ptr unordered, align 16
ret void ret void
} }
define dso_local void @store_atomic_i128_aligned_monotonic(i128 %value, ptr %ptr) { define dso_local void @store_atomic_i128_aligned_monotonic(i128 %value, ptr %ptr) {
; CHECK-LABEL: store_atomic_i128_aligned_monotonic: ; CHECK-LABEL: store_atomic_i128_aligned_monotonic:
; CHECK: stp x0, x1, [x2] ; CHECK: stp x0, x1, [x2]
lenaryUnsubmitted
Done
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I think in this case the stp is better, given it won't overwrite x0 and x1 - this doesn't matter if the values in both are dead at this point, but if they're used by anything after the store, then with swpp they will need to be copied into a different register.

lenary: I think in this case the `stp` is better, given it won't overwrite x0 and x1 - this doesn't…
store atomic i128 %value, ptr %ptr monotonic, align 16 store atomic i128 %value, ptr %ptr monotonic, align 16
ret void ret void
} }
define dso_local void @store_atomic_i128_aligned_release(i128 %value, ptr %ptr) { define dso_local void @store_atomic_i128_aligned_release(i128 %value, ptr %ptr) {
; CHECK-LABEL: store_atomic_i128_aligned_release: ; CHECK-LABEL: store_atomic_i128_aligned_release:
; CHECK: dmb ish ; CHECK: swppl x0, x1, [x2]
; CHECK: stp x0, x1, [x2]
store atomic i128 %value, ptr %ptr release, align 16 store atomic i128 %value, ptr %ptr release, align 16
ret void ret void
} }
define dso_local void @store_atomic_i128_aligned_seq_cst(i128 %value, ptr %ptr) { define dso_local void @store_atomic_i128_aligned_seq_cst(i128 %value, ptr %ptr) {
; CHECK-LABEL: store_atomic_i128_aligned_seq_cst: ; CHECK-LABEL: store_atomic_i128_aligned_seq_cst:
; CHECK: dmb ish ; CHECK: swppal x0, x1, [x2]
; CHECK: stp x0, x1, [x2]
; CHECK: dmb ish
store atomic i128 %value, ptr %ptr seq_cst, align 16 store atomic i128 %value, ptr %ptr seq_cst, align 16
ret void ret void
} }
define dso_local void @store_atomic_i8_unaligned_unordered(i8 %value, ptr %ptr) { define dso_local void @store_atomic_i8_unaligned_unordered(i8 %value, ptr %ptr) {
; CHECK-LABEL: store_atomic_i8_unaligned_unordered: ; CHECK-LABEL: store_atomic_i8_unaligned_unordered:
; CHECK: strb w0, [x1] ; CHECK: strb w0, [x1]
store atomic i8 %value, ptr %ptr unordered, align 1 store atomic i8 %value, ptr %ptr unordered, align 1
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