[GlobalISel] Don't form anyextending atomic loads.
Until we can reliably check the legality and improve our selection of these, don't form them at all.
This commit is contained in:
Amara Emerson
parent
4abb722ffa
commit
60fc4ac67a
@ -597,8 +597,8 @@ bool CombinerHelper::matchCombineExtendingLoads(MachineInstr &MI,
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UseMI.getOpcode() == TargetOpcode::G_ZEXT ||
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(UseMI.getOpcode() == TargetOpcode::G_ANYEXT)) {
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const auto &MMO = LoadMI->getMMO();
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// For atomics, only form anyextending loads.
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if (MMO.isAtomic() && UseMI.getOpcode() != TargetOpcode::G_ANYEXT)
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// Don't do anything for atomics.
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if (MMO.isAtomic())
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continue;
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// Check for legality.
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if (!isPreLegalize()) {
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@ -35,16 +35,24 @@ define i8 @load_atomic_i8_aligned_monotonic_const(ptr readonly %ptr) {
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}
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define i8 @load_atomic_i8_aligned_acquire(ptr %ptr) {
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; CHECK-LABEL: load_atomic_i8_aligned_acquire:
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; CHECK: ldapurb w0, [x0, #4]
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; GISEL-LABEL: load_atomic_i8_aligned_acquire:
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; GISEL: add x8, x0, #4
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; GISEL: ldaprb w0, [x8]
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;
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; SDAG-LABEL: load_atomic_i8_aligned_acquire:
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; SDAG: ldapurb w0, [x0, #4]
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%gep = getelementptr inbounds i8, ptr %ptr, i32 4
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%r = load atomic i8, ptr %gep acquire, align 1
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ret i8 %r
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}
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define i8 @load_atomic_i8_aligned_acquire_const(ptr readonly %ptr) {
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; CHECK-LABEL: load_atomic_i8_aligned_acquire_const:
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; CHECK: ldapurb w0, [x0, #4]
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; GISEL-LABEL: load_atomic_i8_aligned_acquire_const:
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; GISEL: add x8, x0, #4
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; GISEL: ldaprb w0, [x8]
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;
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; SDAG-LABEL: load_atomic_i8_aligned_acquire_const:
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; SDAG: ldapurb w0, [x0, #4]
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%gep = getelementptr inbounds i8, ptr %ptr, i32 4
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%r = load atomic i8, ptr %gep acquire, align 1
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ret i8 %r
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@ -101,16 +109,24 @@ define i16 @load_atomic_i16_aligned_monotonic_const(ptr readonly %ptr) {
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}
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define i16 @load_atomic_i16_aligned_acquire(ptr %ptr) {
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; CHECK-LABEL: load_atomic_i16_aligned_acquire:
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; CHECK: ldapurh w0, [x0, #8]
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; GISEL-LABEL: load_atomic_i16_aligned_acquire:
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; GISEL: add x8, x0, #8
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; GISEL: ldaprh w0, [x8]
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;
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; SDAG-LABEL: load_atomic_i16_aligned_acquire:
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; SDAG: ldapurh w0, [x0, #8]
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%gep = getelementptr inbounds i16, ptr %ptr, i32 4
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%r = load atomic i16, ptr %gep acquire, align 2
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ret i16 %r
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}
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define i16 @load_atomic_i16_aligned_acquire_const(ptr readonly %ptr) {
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; CHECK-LABEL: load_atomic_i16_aligned_acquire_const:
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; CHECK: ldapurh w0, [x0, #8]
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; GISEL-LABEL: load_atomic_i16_aligned_acquire_const:
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; GISEL: add x8, x0, #8
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; GISEL: ldaprh w0, [x8]
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;
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; SDAG-LABEL: load_atomic_i16_aligned_acquire_const:
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; SDAG: ldapurh w0, [x0, #8]
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%gep = getelementptr inbounds i16, ptr %ptr, i32 4
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%r = load atomic i16, ptr %gep acquire, align 2
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ret i16 %r
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@ -367,16 +383,24 @@ define i8 @load_atomic_i8_unaligned_monotonic_const(ptr readonly %ptr) {
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}
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define i8 @load_atomic_i8_unaligned_acquire(ptr %ptr) {
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; CHECK-LABEL: load_atomic_i8_unaligned_acquire:
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; CHECK: ldapurb w0, [x0, #4]
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; GISEL-LABEL: load_atomic_i8_unaligned_acquire:
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; GISEL: add x8, x0, #4
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; GISEL: ldaprb w0, [x8]
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;
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; SDAG-LABEL: load_atomic_i8_unaligned_acquire:
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; SDAG: ldapurb w0, [x0, #4]
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%gep = getelementptr inbounds i8, ptr %ptr, i32 4
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%r = load atomic i8, ptr %gep acquire, align 1
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ret i8 %r
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}
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define i8 @load_atomic_i8_unaligned_acquire_const(ptr readonly %ptr) {
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; CHECK-LABEL: load_atomic_i8_unaligned_acquire_const:
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; CHECK: ldapurb w0, [x0, #4]
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; GISEL-LABEL: load_atomic_i8_unaligned_acquire_const:
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; GISEL: add x8, x0, #4
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; GISEL: ldaprb w0, [x8]
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;
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; SDAG-LABEL: load_atomic_i8_unaligned_acquire_const:
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; SDAG: ldapurb w0, [x0, #4]
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%gep = getelementptr inbounds i8, ptr %ptr, i32 4
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%r = load atomic i8, ptr %gep acquire, align 1
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ret i8 %r
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@ -819,7 +843,8 @@ define i128 @load_atomic_i128_unaligned_seq_cst_const(ptr readonly %ptr) {
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define i8 @load_atomic_i8_from_gep() {
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; GISEL-LABEL: load_atomic_i8_from_gep:
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; GISEL: bl init
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; GISEL: ldapurb w0, [x8, #1]
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; GISEL: add x8, x8, #1
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; GISEL: ldaprb w0, [x8]
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;
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; SDAG-LABEL: load_atomic_i8_from_gep:
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; SDAG: bl init
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@ -834,7 +859,8 @@ define i8 @load_atomic_i8_from_gep() {
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define i16 @load_atomic_i16_from_gep() {
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; GISEL-LABEL: load_atomic_i16_from_gep:
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; GISEL: bl init
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; GISEL: ldapurh w0, [x8, #2]
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; GISEL: add x8, x8, #2
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; GISEL: ldaprh w0, [x8]
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;
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; SDAG-LABEL: load_atomic_i16_from_gep:
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; SDAG: bl init
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@ -884,7 +910,6 @@ define i128 @load_atomic_i128_from_gep() {
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;
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; SDAG-LABEL: load_atomic_i128_from_gep:
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; SDAG: bl init
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; SDAG: ldp x0, x1, [sp, #16]
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; SDAG: dmb ishld
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%a = alloca [3 x i128]
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call void @init(ptr %a)
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@ -993,24 +993,24 @@ define i8 @atomic_load_relaxed_8(ptr %p, i32 %off32) #0 {
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; CHECK-NOLSE-O1: ; %bb.0:
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; CHECK-NOLSE-O1-NEXT: ldrb w8, [x0, #4095]
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; CHECK-NOLSE-O1-NEXT: ldrb w9, [x0, w1, sxtw]
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; CHECK-NOLSE-O1-NEXT: add x11, x0, #291, lsl #12 ; =1191936
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; CHECK-NOLSE-O1-NEXT: ldurb w10, [x0, #-256]
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; CHECK-NOLSE-O1-NEXT: add w8, w8, w9
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; CHECK-NOLSE-O1-NEXT: ldrb w9, [x11]
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; CHECK-NOLSE-O1-NEXT: add w8, w8, w10
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; CHECK-NOLSE-O1-NEXT: add w0, w8, w9
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; CHECK-NOLSE-O1-NEXT: add w8, w9, w8, uxtb
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; CHECK-NOLSE-O1-NEXT: add x9, x0, #291, lsl #12 ; =1191936
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; CHECK-NOLSE-O1-NEXT: ldrb w9, [x9]
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; CHECK-NOLSE-O1-NEXT: add w8, w8, w10, uxtb
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; CHECK-NOLSE-O1-NEXT: add w0, w8, w9, uxtb
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; CHECK-NOLSE-O1-NEXT: ret
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;
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; CHECK-OUTLINE-O1-LABEL: atomic_load_relaxed_8:
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; CHECK-OUTLINE-O1: ; %bb.0:
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; CHECK-OUTLINE-O1-NEXT: ldrb w8, [x0, #4095]
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; CHECK-OUTLINE-O1-NEXT: ldrb w9, [x0, w1, sxtw]
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; CHECK-OUTLINE-O1-NEXT: add x11, x0, #291, lsl #12 ; =1191936
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; CHECK-OUTLINE-O1-NEXT: ldurb w10, [x0, #-256]
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; CHECK-OUTLINE-O1-NEXT: add w8, w8, w9
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; CHECK-OUTLINE-O1-NEXT: ldrb w9, [x11]
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; CHECK-OUTLINE-O1-NEXT: add w8, w8, w10
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; CHECK-OUTLINE-O1-NEXT: add w0, w8, w9
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; CHECK-OUTLINE-O1-NEXT: add w8, w9, w8, uxtb
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; CHECK-OUTLINE-O1-NEXT: add x9, x0, #291, lsl #12 ; =1191936
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; CHECK-OUTLINE-O1-NEXT: ldrb w9, [x9]
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; CHECK-OUTLINE-O1-NEXT: add w8, w8, w10, uxtb
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; CHECK-OUTLINE-O1-NEXT: add w0, w8, w9, uxtb
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; CHECK-OUTLINE-O1-NEXT: ret
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;
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; CHECK-NOLSE-O0-LABEL: atomic_load_relaxed_8:
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@ -1045,12 +1045,12 @@ define i8 @atomic_load_relaxed_8(ptr %p, i32 %off32) #0 {
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; CHECK-LSE-O1: ; %bb.0:
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; CHECK-LSE-O1-NEXT: ldrb w8, [x0, #4095]
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; CHECK-LSE-O1-NEXT: ldrb w9, [x0, w1, sxtw]
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; CHECK-LSE-O1-NEXT: ldurb w10, [x0, #-256]
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; CHECK-LSE-O1-NEXT: add w8, w8, w10
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; CHECK-LSE-O1-NEXT: add w8, w8, w9
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; CHECK-LSE-O1-NEXT: add w8, w9, w8, uxtb
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; CHECK-LSE-O1-NEXT: ldurb w9, [x0, #-256]
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; CHECK-LSE-O1-NEXT: add w8, w8, w9, uxtb
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; CHECK-LSE-O1-NEXT: add x9, x0, #291, lsl #12 ; =1191936
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; CHECK-LSE-O1-NEXT: ldrb w9, [x9]
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; CHECK-LSE-O1-NEXT: add w0, w8, w9
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; CHECK-LSE-O1-NEXT: add w0, w8, w9, uxtb
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; CHECK-LSE-O1-NEXT: ret
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;
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; CHECK-LSE-O0-LABEL: atomic_load_relaxed_8:
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@ -1089,24 +1089,24 @@ define i16 @atomic_load_relaxed_16(ptr %p, i32 %off32) #0 {
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; CHECK-NOLSE-O1: ; %bb.0:
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; CHECK-NOLSE-O1-NEXT: ldrh w8, [x0, #8190]
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; CHECK-NOLSE-O1-NEXT: ldrh w9, [x0, w1, sxtw #1]
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; CHECK-NOLSE-O1-NEXT: add x11, x0, #291, lsl #12 ; =1191936
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; CHECK-NOLSE-O1-NEXT: ldurh w10, [x0, #-256]
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; CHECK-NOLSE-O1-NEXT: add w8, w8, w9
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; CHECK-NOLSE-O1-NEXT: ldrh w9, [x11]
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; CHECK-NOLSE-O1-NEXT: add w8, w8, w10
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; CHECK-NOLSE-O1-NEXT: add w0, w8, w9
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; CHECK-NOLSE-O1-NEXT: add w8, w9, w8, uxth
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; CHECK-NOLSE-O1-NEXT: add x9, x0, #291, lsl #12 ; =1191936
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; CHECK-NOLSE-O1-NEXT: ldrh w9, [x9]
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; CHECK-NOLSE-O1-NEXT: add w8, w8, w10, uxth
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; CHECK-NOLSE-O1-NEXT: add w0, w8, w9, uxth
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; CHECK-NOLSE-O1-NEXT: ret
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;
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; CHECK-OUTLINE-O1-LABEL: atomic_load_relaxed_16:
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; CHECK-OUTLINE-O1: ; %bb.0:
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; CHECK-OUTLINE-O1-NEXT: ldrh w8, [x0, #8190]
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; CHECK-OUTLINE-O1-NEXT: ldrh w9, [x0, w1, sxtw #1]
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; CHECK-OUTLINE-O1-NEXT: add x11, x0, #291, lsl #12 ; =1191936
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; CHECK-OUTLINE-O1-NEXT: ldurh w10, [x0, #-256]
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; CHECK-OUTLINE-O1-NEXT: add w8, w8, w9
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; CHECK-OUTLINE-O1-NEXT: ldrh w9, [x11]
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; CHECK-OUTLINE-O1-NEXT: add w8, w8, w10
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; CHECK-OUTLINE-O1-NEXT: add w0, w8, w9
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; CHECK-OUTLINE-O1-NEXT: add w8, w9, w8, uxth
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; CHECK-OUTLINE-O1-NEXT: add x9, x0, #291, lsl #12 ; =1191936
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; CHECK-OUTLINE-O1-NEXT: ldrh w9, [x9]
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; CHECK-OUTLINE-O1-NEXT: add w8, w8, w10, uxth
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; CHECK-OUTLINE-O1-NEXT: add w0, w8, w9, uxth
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; CHECK-OUTLINE-O1-NEXT: ret
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;
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; CHECK-NOLSE-O0-LABEL: atomic_load_relaxed_16:
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@ -1141,12 +1141,12 @@ define i16 @atomic_load_relaxed_16(ptr %p, i32 %off32) #0 {
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; CHECK-LSE-O1: ; %bb.0:
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; CHECK-LSE-O1-NEXT: ldrh w8, [x0, #8190]
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; CHECK-LSE-O1-NEXT: ldrh w9, [x0, w1, sxtw #1]
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; CHECK-LSE-O1-NEXT: ldurh w10, [x0, #-256]
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; CHECK-LSE-O1-NEXT: add w8, w8, w10
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; CHECK-LSE-O1-NEXT: add w8, w8, w9
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; CHECK-LSE-O1-NEXT: add w8, w9, w8, uxth
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; CHECK-LSE-O1-NEXT: ldurh w9, [x0, #-256]
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; CHECK-LSE-O1-NEXT: add w8, w8, w9, uxth
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; CHECK-LSE-O1-NEXT: add x9, x0, #291, lsl #12 ; =1191936
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; CHECK-LSE-O1-NEXT: ldrh w9, [x9]
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; CHECK-LSE-O1-NEXT: add w0, w8, w9
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; CHECK-LSE-O1-NEXT: add w0, w8, w9, uxth
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; CHECK-LSE-O1-NEXT: ret
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;
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; CHECK-LSE-O0-LABEL: atomic_load_relaxed_16:
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@ -377,13 +377,13 @@ define i8 @atomic_load_relaxed_8(ptr %p, i32 %off32) {
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; CHECK-NEXT: liveins: $w1, $x0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: renamable $w8 = LDRBBui renamable $x0, 4095, pcsections !0 :: (load monotonic (s8) from %ir.ptr_unsigned)
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; CHECK-NEXT: renamable $w9 = LDRBBroW renamable $x0, killed renamable $w1, 1, 0, pcsections !0 :: (load unordered (s8) from %ir.ptr_regoff)
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; CHECK-NEXT: renamable $w10 = LDURBBi renamable $x0, -256, pcsections !0 :: (load monotonic (s8) from %ir.ptr_unscaled)
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; CHECK-NEXT: renamable $x11 = ADDXri killed renamable $x0, 291, 12
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; CHECK-NEXT: $w8 = ADDWrs killed renamable $w8, killed renamable $w9, 0, pcsections !0
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; CHECK-NEXT: renamable $w9 = LDRBBui killed renamable $x11, 0, pcsections !0 :: (load unordered (s8) from %ir.ptr_random)
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; CHECK-NEXT: $w8 = ADDWrs killed renamable $w8, killed renamable $w10, 0, pcsections !0
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; CHECK-NEXT: $w0 = ADDWrs killed renamable $w8, killed renamable $w9, 0, pcsections !0
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; CHECK-NEXT: renamable $w9 = LDRBBroW renamable $x0, killed renamable $w1, 1, 0 :: (load unordered (s8) from %ir.ptr_regoff)
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; CHECK-NEXT: renamable $w10 = LDURBBi renamable $x0, -256 :: (load monotonic (s8) from %ir.ptr_unscaled)
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; CHECK-NEXT: renamable $w8 = ADDWrx killed renamable $w9, killed renamable $w8, 0, pcsections !0
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; CHECK-NEXT: renamable $x9 = ADDXri killed renamable $x0, 291, 12
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; CHECK-NEXT: renamable $w8 = ADDWrx killed renamable $w8, killed renamable $w10, 0, pcsections !0
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; CHECK-NEXT: renamable $w9 = LDRBBui killed renamable $x9, 0, pcsections !0 :: (load unordered (s8) from %ir.ptr_random)
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; CHECK-NEXT: renamable $w0 = ADDWrx killed renamable $w8, killed renamable $w9, 0, pcsections !0
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; CHECK-NEXT: RET undef $lr, implicit $w0
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%ptr_unsigned = getelementptr i8, ptr %p, i32 4095
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%val_unsigned = load atomic i8, ptr %ptr_unsigned monotonic, align 1, !pcsections !0
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@ -409,13 +409,13 @@ define i16 @atomic_load_relaxed_16(ptr %p, i32 %off32) {
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; CHECK-NEXT: liveins: $w1, $x0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: renamable $w8 = LDRHHui renamable $x0, 4095, pcsections !0 :: (load monotonic (s16) from %ir.ptr_unsigned)
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; CHECK-NEXT: renamable $w9 = LDRHHroW renamable $x0, killed renamable $w1, 1, 1, pcsections !0 :: (load unordered (s16) from %ir.ptr_regoff)
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; CHECK-NEXT: renamable $w10 = LDURHHi renamable $x0, -256, pcsections !0 :: (load monotonic (s16) from %ir.ptr_unscaled)
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; CHECK-NEXT: renamable $x11 = ADDXri killed renamable $x0, 291, 12
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; CHECK-NEXT: $w8 = ADDWrs killed renamable $w8, killed renamable $w9, 0, pcsections !0
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; CHECK-NEXT: renamable $w9 = LDRHHui killed renamable $x11, 0, pcsections !0 :: (load unordered (s16) from %ir.ptr_random)
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; CHECK-NEXT: $w8 = ADDWrs killed renamable $w8, killed renamable $w10, 0, pcsections !0
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; CHECK-NEXT: $w0 = ADDWrs killed renamable $w8, killed renamable $w9, 0, pcsections !0
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; CHECK-NEXT: renamable $w9 = LDRHHroW renamable $x0, killed renamable $w1, 1, 1 :: (load unordered (s16) from %ir.ptr_regoff)
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; CHECK-NEXT: renamable $w10 = LDURHHi renamable $x0, -256 :: (load monotonic (s16) from %ir.ptr_unscaled)
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; CHECK-NEXT: renamable $w8 = ADDWrx killed renamable $w9, killed renamable $w8, 8, pcsections !0
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; CHECK-NEXT: renamable $x9 = ADDXri killed renamable $x0, 291, 12
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; CHECK-NEXT: renamable $w8 = ADDWrx killed renamable $w8, killed renamable $w10, 8, pcsections !0
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; CHECK-NEXT: renamable $w9 = LDRHHui killed renamable $x9, 0, pcsections !0 :: (load unordered (s16) from %ir.ptr_random)
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; CHECK-NEXT: renamable $w0 = ADDWrx killed renamable $w8, killed renamable $w9, 8, pcsections !0
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; CHECK-NEXT: RET undef $lr, implicit $w0
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%ptr_unsigned = getelementptr i16, ptr %p, i32 4095
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%val_unsigned = load atomic i16, ptr %ptr_unsigned monotonic, align 2, !pcsections !0
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@ -0,0 +1,47 @@
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
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; RUN: llc -global-isel -global-isel-abort=1 -O0 -o - %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
|
||||
target triple = "arm64e-apple-macosx14.0.0"
|
||||
|
||||
define void @test(ptr %0) {
|
||||
; CHECK-LABEL: test:
|
||||
; CHECK: ; %bb.0: ; %entry
|
||||
; CHECK-NEXT: sub sp, sp, #144
|
||||
; CHECK-NEXT: stp x29, x30, [sp, #128] ; 16-byte Folded Spill
|
||||
; CHECK-NEXT: .cfi_def_cfa_offset 144
|
||||
; CHECK-NEXT: .cfi_offset w30, -8
|
||||
; CHECK-NEXT: .cfi_offset w29, -16
|
||||
; CHECK-NEXT: ldar w8, [x0]
|
||||
; CHECK-NEXT: str w8, [sp, #116] ; 4-byte Folded Spill
|
||||
; CHECK-NEXT: mov x8, #0 ; =0x0
|
||||
; CHECK-NEXT: str x8, [sp, #120] ; 8-byte Folded Spill
|
||||
; CHECK-NEXT: blr x8
|
||||
; CHECK-NEXT: ldr w11, [sp, #116] ; 4-byte Folded Reload
|
||||
; CHECK-NEXT: ldr x8, [sp, #120] ; 8-byte Folded Reload
|
||||
; CHECK-NEXT: mov x9, sp
|
||||
; CHECK-NEXT: str xzr, [x9]
|
||||
; CHECK-NEXT: str xzr, [x9, #8]
|
||||
; CHECK-NEXT: str xzr, [x9, #16]
|
||||
; CHECK-NEXT: str xzr, [x9, #24]
|
||||
; CHECK-NEXT: str xzr, [x9, #32]
|
||||
; CHECK-NEXT: str xzr, [x9, #40]
|
||||
; CHECK-NEXT: ; implicit-def: $x10
|
||||
; CHECK-NEXT: mov x10, x11
|
||||
; CHECK-NEXT: str x10, [x9, #48]
|
||||
; CHECK-NEXT: str xzr, [x9, #56]
|
||||
; CHECK-NEXT: str xzr, [x9, #64]
|
||||
; CHECK-NEXT: str xzr, [x9, #72]
|
||||
; CHECK-NEXT: str xzr, [x9, #80]
|
||||
; CHECK-NEXT: str xzr, [x9, #88]
|
||||
; CHECK-NEXT: str xzr, [x9, #96]
|
||||
; CHECK-NEXT: mov x0, x8
|
||||
; CHECK-NEXT: blr x8
|
||||
; CHECK-NEXT: ldp x29, x30, [sp, #128] ; 16-byte Folded Reload
|
||||
; CHECK-NEXT: add sp, sp, #144
|
||||
; CHECK-NEXT: ret
|
||||
entry:
|
||||
%atomic-load = load atomic i32, ptr %0 seq_cst, align 4
|
||||
%call10 = call ptr null()
|
||||
call void (ptr, ...) null(ptr null, ptr null, i32 0, ptr null, ptr null, i32 0, i32 0, i32 %atomic-load, i32 0, i32 0, i32 0, i32 0, i64 0, ptr null)
|
||||
ret void
|
||||
}
|
||||
Loading…
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Reference in New Issue
Block a user