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[LV] Teach the loop vectorizer llvm.sincos is trivially vectorizable #128035

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Merged
merged 4 commits into from
Feb 27, 2025
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[LV] Teach the loop vectorizer llvm.sincos is trivially vectorizable #128035

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d1e2507
[LV] Teach the loop vectorizer llvm.sincos is trivially vectorizable
MacDue Feb 20, 2025
25717a1
Add simple predicated test case
MacDue Feb 26, 2025
afeb08f
Add target-independent tests + fixups
MacDue Feb 26, 2025
bb52c13
mv tests
MacDue Feb 27, 2025
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2 changes: 2 additions & 0 deletions llvm/lib/Analysis/VectorUtils.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,7 @@ bool llvm::isTriviallyVectorizable(Intrinsic::ID ID) {
case Intrinsic::atan2:
case Intrinsic::sin:
case Intrinsic::cos:
case Intrinsic::sincos:
case Intrinsic::tan:
case Intrinsic::sinh:
case Intrinsic::cosh:
Expand Down Expand Up @@ -185,6 +186,7 @@ bool llvm::isVectorIntrinsicWithOverloadTypeAtArg(
case Intrinsic::ucmp:
case Intrinsic::scmp:
return OpdIdx == -1 || OpdIdx == 0;
case Intrinsic::sincos:
case Intrinsic::is_fpclass:
case Intrinsic::vp_is_fpclass:
return OpdIdx == 0;
Expand Down
3 changes: 2 additions & 1 deletion llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2926,7 +2926,8 @@ LoopVectorizationCostModel::getVectorIntrinsicCost(CallInst *CI,
[&](Type *Ty) { return maybeVectorizeType(Ty, VF); });

IntrinsicCostAttributes CostAttrs(ID, RetTy, Arguments, ParamTys, FMF,
dyn_cast<IntrinsicInst>(CI));
dyn_cast<IntrinsicInst>(CI),
InstructionCost::getInvalid(), TLI);
return TTI.getIntrinsicInstrCost(CostAttrs, CostKind);
}

Expand Down
3 changes: 2 additions & 1 deletion llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1176,7 +1176,8 @@ InstructionCost VPWidenIntrinsicRecipe::computeCost(ElementCount VF,
FastMathFlags FMF = hasFastMathFlags() ? getFastMathFlags() : FastMathFlags();
IntrinsicCostAttributes CostAttrs(
VectorIntrinsicID, RetTy, Arguments, ParamTys, FMF,
dyn_cast_or_null<IntrinsicInst>(getUnderlyingValue()));
dyn_cast_or_null<IntrinsicInst>(getUnderlyingValue()),
InstructionCost::getInvalid(), &Ctx.TLI);
return Ctx.TTI.getIntrinsicInstrCost(CostAttrs, Ctx.CostKind);
}

Expand Down
251 changes: 251 additions & 0 deletions llvm/test/Transforms/LoopVectorize/AArch64/sincos.ll
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@@ -0,0 +1,251 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --filter "(:|sincos|extractvalue|store)" --version 5
; RUN: opt -passes=loop-vectorize -mtriple=aarch64-gnu-linux -mcpu=neoverse-v1 -mattr=+sve < %s -S -o - -debug-only=loop-vectorize 2>%t.1 | FileCheck %s --check-prefix=CHECK
; RUN: opt -passes=loop-vectorize -mtriple=aarch64-gnu-linux -mcpu=neoverse-v1 -mattr=+sve -vector-library=ArmPL < %s -S -o - -debug-only=loop-vectorize 2>%t.2 | FileCheck %s --check-prefix=CHECK-ARMPL
; RUN: FileCheck --input-file=%t.1 --check-prefix=CHECK-COST %s
; RUN: FileCheck --input-file=%t.2 --check-prefix=CHECK-COST-ARMPL %s
; REQUIRES: asserts

; CHECK-COST-LABEL: sincos_f32
; CHECK-COST: LV: Found an estimated cost of 10 for VF 1 For instruction: %call = tail call { float, float } @llvm.sincos.f32(float %in_val)
; CHECK-COST: Cost of 26 for VF 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of 58 for VF 4: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of Invalid for VF vscale x 1: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of Invalid for VF vscale x 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of Invalid for VF vscale x 4: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)

; CHECK-COST-ARMPL-LABEL: sincos_f32
; CHECK-COST-ARMPL: LV: Found an estimated cost of 10 for VF 1 For instruction: %call = tail call { float, float } @llvm.sincos.f32(float %in_val)
; CHECK-COST-ARMPL: Cost of 26 for VF 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of 12 for VF 4: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of Invalid for VF vscale x 1: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of Invalid for VF vscale x 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of 13 for VF vscale x 4: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)

define void @sincos_f32(ptr noalias %in, ptr noalias writeonly %out_a, ptr noalias writeonly %out_b) {
; CHECK-LABEL: define void @sincos_f32(
; CHECK-SAME: ptr noalias [[IN:%.*]], ptr noalias writeonly [[OUT_A:%.*]], ptr noalias writeonly [[OUT_B:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK: [[ENTRY:.*:]]
; CHECK: [[VECTOR_PH:.*:]]
; CHECK: [[VECTOR_BODY:.*:]]
; CHECK: [[TMP3:%.*]] = call { <2 x float>, <2 x float> } @llvm.sincos.v2f32(<2 x float> [[WIDE_LOAD:%.*]])
; CHECK: [[TMP4:%.*]] = extractvalue { <2 x float>, <2 x float> } [[TMP3]], 0
; CHECK: [[TMP5:%.*]] = extractvalue { <2 x float>, <2 x float> } [[TMP3]], 1
; CHECK: store <2 x float> [[TMP4]], ptr [[TMP7:%.*]], align 4
; CHECK: store <2 x float> [[TMP5]], ptr [[TMP9:%.*]], align 4
; CHECK: [[MIDDLE_BLOCK:.*:]]
; CHECK: [[SCALAR_PH:.*:]]
; CHECK: [[FOR_BODY:.*:]]
; CHECK: [[CALL:%.*]] = tail call { float, float } @llvm.sincos.f32(float [[IN_VAL:%.*]])
; CHECK: [[EXTRACT_A:%.*]] = extractvalue { float, float } [[CALL]], 0
; CHECK: [[EXTRACT_B:%.*]] = extractvalue { float, float } [[CALL]], 1
; CHECK: store float [[EXTRACT_A]], ptr [[ARRAYIDX2:%.*]], align 4
; CHECK: store float [[EXTRACT_B]], ptr [[ARRAYIDX4:%.*]], align 4
; CHECK: [[EXIT:.*:]]
;
; CHECK-ARMPL-LABEL: define void @sincos_f32(
; CHECK-ARMPL-SAME: ptr noalias [[IN:%.*]], ptr noalias writeonly [[OUT_A:%.*]], ptr noalias writeonly [[OUT_B:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-ARMPL: [[ENTRY:.*:]]
; CHECK-ARMPL: [[VECTOR_PH:.*:]]
; CHECK-ARMPL: [[VECTOR_BODY:.*:]]
; CHECK-ARMPL: [[TMP12:%.*]] = call { <vscale x 4 x float>, <vscale x 4 x float> } @llvm.sincos.nxv4f32(<vscale x 4 x float> [[WIDE_LOAD:%.*]])
; CHECK-ARMPL: [[TMP13:%.*]] = call { <vscale x 4 x float>, <vscale x 4 x float> } @llvm.sincos.nxv4f32(<vscale x 4 x float> [[WIDE_LOAD1:%.*]])
; CHECK-ARMPL: [[TMP14:%.*]] = extractvalue { <vscale x 4 x float>, <vscale x 4 x float> } [[TMP12]], 0
; CHECK-ARMPL: [[TMP15:%.*]] = extractvalue { <vscale x 4 x float>, <vscale x 4 x float> } [[TMP13]], 0
; CHECK-ARMPL: [[TMP16:%.*]] = extractvalue { <vscale x 4 x float>, <vscale x 4 x float> } [[TMP12]], 1
; CHECK-ARMPL: [[TMP17:%.*]] = extractvalue { <vscale x 4 x float>, <vscale x 4 x float> } [[TMP13]], 1
; CHECK-ARMPL: store <vscale x 4 x float> [[TMP14]], ptr [[TMP19:%.*]], align 4
; CHECK-ARMPL: store <vscale x 4 x float> [[TMP15]], ptr [[TMP22:%.*]], align 4
; CHECK-ARMPL: store <vscale x 4 x float> [[TMP16]], ptr [[TMP24:%.*]], align 4
; CHECK-ARMPL: store <vscale x 4 x float> [[TMP17]], ptr [[TMP27:%.*]], align 4
; CHECK-ARMPL: [[MIDDLE_BLOCK:.*:]]
; CHECK-ARMPL: [[SCALAR_PH:.*:]]
; CHECK-ARMPL: [[FOR_BODY:.*:]]
; CHECK-ARMPL: [[CALL:%.*]] = tail call { float, float } @llvm.sincos.f32(float [[IN_VAL:%.*]])
; CHECK-ARMPL: [[EXTRACT_A:%.*]] = extractvalue { float, float } [[CALL]], 0
; CHECK-ARMPL: [[EXTRACT_B:%.*]] = extractvalue { float, float } [[CALL]], 1
; CHECK-ARMPL: store float [[EXTRACT_A]], ptr [[ARRAYIDX2:%.*]], align 4
; CHECK-ARMPL: store float [[EXTRACT_B]], ptr [[ARRAYIDX4:%.*]], align 4
; CHECK-ARMPL: [[EXIT:.*:]]
;
entry:
br label %for.body

for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%arrayidx = getelementptr inbounds float, ptr %in, i64 %iv
%in_val = load float, ptr %arrayidx, align 4
%call = tail call { float, float } @llvm.sincos.f32(float %in_val)
%extract_a = extractvalue { float, float } %call, 0
%extract_b = extractvalue { float, float } %call, 1
%arrayidx2 = getelementptr inbounds float, ptr %out_a, i64 %iv
store float %extract_a, ptr %arrayidx2, align 4
%arrayidx4 = getelementptr inbounds float, ptr %out_b, i64 %iv
store float %extract_b, ptr %arrayidx4, align 4
%iv.next = add nuw nsw i64 %iv, 1
%exitcond.not = icmp eq i64 %iv.next, 1024
br i1 %exitcond.not, label %exit, label %for.body

exit:
ret void
}

; CHECK-COST-LABEL: sincos_f64
; CHECK-COST: LV: Found an estimated cost of 10 for VF 1 For instruction: %call = tail call { double, double } @llvm.sincos.f64(double %in_val)
; CHECK-COST: Cost of 26 for VF 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of Invalid for VF vscale x 1: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of Invalid for VF vscale x 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)

; CHECK-COST-ARMPL-LABEL: sincos_f64
; CHECK-COST-ARMPL: LV: Found an estimated cost of 10 for VF 1 For instruction: %call = tail call { double, double } @llvm.sincos.f64(double %in_val)
; CHECK-COST-ARMPL: Cost of 12 for VF 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of Invalid for VF vscale x 1: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of 13 for VF vscale x 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)

define void @sincos_f64(ptr noalias %in, ptr noalias writeonly %out_a, ptr noalias writeonly %out_b) {
; CHECK-LABEL: define void @sincos_f64(
; CHECK-SAME: ptr noalias [[IN:%.*]], ptr noalias writeonly [[OUT_A:%.*]], ptr noalias writeonly [[OUT_B:%.*]]) #[[ATTR0]] {
; CHECK: [[ENTRY:.*:]]
; CHECK: [[VECTOR_PH:.*:]]
; CHECK: [[VECTOR_BODY:.*:]]
; CHECK: [[TMP3:%.*]] = call { <2 x double>, <2 x double> } @llvm.sincos.v2f64(<2 x double> [[WIDE_LOAD:%.*]])
; CHECK: [[TMP4:%.*]] = extractvalue { <2 x double>, <2 x double> } [[TMP3]], 0
; CHECK: [[TMP5:%.*]] = extractvalue { <2 x double>, <2 x double> } [[TMP3]], 1
; CHECK: store <2 x double> [[TMP4]], ptr [[TMP7:%.*]], align 8
; CHECK: store <2 x double> [[TMP5]], ptr [[TMP9:%.*]], align 8
; CHECK: [[MIDDLE_BLOCK:.*:]]
; CHECK: [[SCALAR_PH:.*:]]
; CHECK: [[FOR_BODY:.*:]]
; CHECK: [[CALL:%.*]] = tail call { double, double } @llvm.sincos.f64(double [[IN_VAL:%.*]])
; CHECK: [[EXTRACT_A:%.*]] = extractvalue { double, double } [[CALL]], 0
; CHECK: [[EXTRACT_B:%.*]] = extractvalue { double, double } [[CALL]], 1
; CHECK: store double [[EXTRACT_A]], ptr [[ARRAYIDX2:%.*]], align 8
; CHECK: store double [[EXTRACT_B]], ptr [[ARRAYIDX4:%.*]], align 8
; CHECK: [[EXIT:.*:]]
;
; CHECK-ARMPL-LABEL: define void @sincos_f64(
; CHECK-ARMPL-SAME: ptr noalias [[IN:%.*]], ptr noalias writeonly [[OUT_A:%.*]], ptr noalias writeonly [[OUT_B:%.*]]) #[[ATTR0]] {
; CHECK-ARMPL: [[ENTRY:.*:]]
; CHECK-ARMPL: [[VECTOR_PH:.*:]]
; CHECK-ARMPL: [[VECTOR_BODY:.*:]]
; CHECK-ARMPL: [[TMP12:%.*]] = call { <vscale x 2 x double>, <vscale x 2 x double> } @llvm.sincos.nxv2f64(<vscale x 2 x double> [[WIDE_LOAD:%.*]])
; CHECK-ARMPL: [[TMP13:%.*]] = call { <vscale x 2 x double>, <vscale x 2 x double> } @llvm.sincos.nxv2f64(<vscale x 2 x double> [[WIDE_LOAD1:%.*]])
; CHECK-ARMPL: [[TMP14:%.*]] = extractvalue { <vscale x 2 x double>, <vscale x 2 x double> } [[TMP12]], 0
; CHECK-ARMPL: [[TMP15:%.*]] = extractvalue { <vscale x 2 x double>, <vscale x 2 x double> } [[TMP13]], 0
; CHECK-ARMPL: [[TMP16:%.*]] = extractvalue { <vscale x 2 x double>, <vscale x 2 x double> } [[TMP12]], 1
; CHECK-ARMPL: [[TMP17:%.*]] = extractvalue { <vscale x 2 x double>, <vscale x 2 x double> } [[TMP13]], 1
; CHECK-ARMPL: store <vscale x 2 x double> [[TMP14]], ptr [[TMP19:%.*]], align 8
; CHECK-ARMPL: store <vscale x 2 x double> [[TMP15]], ptr [[TMP22:%.*]], align 8
; CHECK-ARMPL: store <vscale x 2 x double> [[TMP16]], ptr [[TMP24:%.*]], align 8
; CHECK-ARMPL: store <vscale x 2 x double> [[TMP17]], ptr [[TMP27:%.*]], align 8
; CHECK-ARMPL: [[MIDDLE_BLOCK:.*:]]
; CHECK-ARMPL: [[SCALAR_PH:.*:]]
; CHECK-ARMPL: [[FOR_BODY:.*:]]
; CHECK-ARMPL: [[CALL:%.*]] = tail call { double, double } @llvm.sincos.f64(double [[IN_VAL:%.*]])
; CHECK-ARMPL: [[EXTRACT_A:%.*]] = extractvalue { double, double } [[CALL]], 0
; CHECK-ARMPL: [[EXTRACT_B:%.*]] = extractvalue { double, double } [[CALL]], 1
; CHECK-ARMPL: store double [[EXTRACT_A]], ptr [[ARRAYIDX2:%.*]], align 8
; CHECK-ARMPL: store double [[EXTRACT_B]], ptr [[ARRAYIDX4:%.*]], align 8
; CHECK-ARMPL: [[EXIT:.*:]]
;
entry:
br label %for.body

for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%arrayidx = getelementptr inbounds double, ptr %in, i64 %iv
%in_val = load double, ptr %arrayidx, align 8
%call = tail call { double, double } @llvm.sincos.f64(double %in_val)
%extract_a = extractvalue { double, double } %call, 0
%extract_b = extractvalue { double, double } %call, 1
%arrayidx2 = getelementptr inbounds double, ptr %out_a, i64 %iv
store double %extract_a, ptr %arrayidx2, align 8
%arrayidx4 = getelementptr inbounds double, ptr %out_b, i64 %iv
store double %extract_b, ptr %arrayidx4, align 8
%iv.next = add nuw nsw i64 %iv, 1
%exitcond.not = icmp eq i64 %iv.next, 1024
br i1 %exitcond.not, label %exit, label %for.body

exit:
ret void
}

; CHECK-COST-LABEL: predicated_sincos
; CHECK-COST: LV: Found an estimated cost of 10 for VF 1 For instruction: %call = tail call { float, float } @llvm.sincos.f32(float %in_val)
; CHECK-COST: Cost of 26 for VF 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of 58 for VF 4: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of Invalid for VF vscale x 1: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of Invalid for VF vscale x 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST: Cost of Invalid for VF vscale x 4: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)

; CHECK-COST-ARMPL-LABEL: predicated_sincos
; CHECK-COST-ARMPL: LV: Found an estimated cost of 10 for VF 1 For instruction: %call = tail call { float, float } @llvm.sincos.f32(float %in_val)
; CHECK-COST-ARMPL: Cost of 26 for VF 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of 12 for VF 4: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of Invalid for VF vscale x 1: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of Invalid for VF vscale x 2: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)
; CHECK-COST-ARMPL: Cost of 13 for VF vscale x 4: WIDEN-INTRINSIC ir<%call> = call llvm.sincos(ir<%in_val>)

define void @predicated_sincos(float %x, ptr noalias %in, ptr noalias writeonly %out_a, ptr noalias writeonly %out_b) {
; CHECK-LABEL: define void @predicated_sincos(
; CHECK-SAME: float [[X:%.*]], ptr noalias [[IN:%.*]], ptr noalias writeonly [[OUT_A:%.*]], ptr noalias writeonly [[OUT_B:%.*]]) #[[ATTR0]] {
; CHECK: [[ENTRY:.*:]]
; CHECK: [[FOR_BODY:.*:]]
; CHECK: [[IF_THEN:.*:]]
; CHECK: [[CALL:%.*]] = tail call { float, float } @llvm.sincos.f32(float [[IN_VAL:%.*]])
; CHECK: [[EXTRACT_A:%.*]] = extractvalue { float, float } [[CALL]], 0
; CHECK: [[EXTRACT_B:%.*]] = extractvalue { float, float } [[CALL]], 1
; CHECK: store float [[EXTRACT_A]], ptr [[ARRAYIDX2:%.*]], align 4
; CHECK: store float [[EXTRACT_B]], ptr [[ARRAYIDX4:%.*]], align 4
; CHECK: [[IF_MERGE:.*:]]
; CHECK: [[FOR_END:.*:]]
;
; CHECK-ARMPL-LABEL: define void @predicated_sincos(
; CHECK-ARMPL-SAME: float [[X:%.*]], ptr noalias [[IN:%.*]], ptr noalias writeonly [[OUT_A:%.*]], ptr noalias writeonly [[OUT_B:%.*]]) #[[ATTR0]] {
; CHECK-ARMPL: [[ENTRY:.*:]]
; CHECK-ARMPL: [[VECTOR_PH:.*:]]
; CHECK-ARMPL: [[VECTOR_BODY:.*:]]
; CHECK-ARMPL: [[TMP15:%.*]] = call { <vscale x 4 x float>, <vscale x 4 x float> } @llvm.sincos.nxv4f32(<vscale x 4 x float> [[WIDE_MASKED_LOAD:%.*]])
; CHECK-ARMPL: [[TMP16:%.*]] = extractvalue { <vscale x 4 x float>, <vscale x 4 x float> } [[TMP15]], 0
; CHECK-ARMPL: [[TMP17:%.*]] = extractvalue { <vscale x 4 x float>, <vscale x 4 x float> } [[TMP15]], 1
; CHECK-ARMPL: call void @llvm.masked.store.nxv4f32.p0(<vscale x 4 x float> [[TMP16]], ptr [[TMP19:%.*]], i32 4, <vscale x 4 x i1> [[TMP14:%.*]])
; CHECK-ARMPL: call void @llvm.masked.store.nxv4f32.p0(<vscale x 4 x float> [[TMP17]], ptr [[TMP21:%.*]], i32 4, <vscale x 4 x i1> [[TMP14]])
; CHECK-ARMPL: [[MIDDLE_BLOCK:.*:]]
; CHECK-ARMPL: [[SCALAR_PH:.*:]]
; CHECK-ARMPL: [[FOR_BODY:.*:]]
; CHECK-ARMPL: [[IF_THEN:.*:]]
; CHECK-ARMPL: [[CALL:%.*]] = tail call { float, float } @llvm.sincos.f32(float [[IN_VAL:%.*]])
; CHECK-ARMPL: [[EXTRACT_A:%.*]] = extractvalue { float, float } [[CALL]], 0
; CHECK-ARMPL: [[EXTRACT_B:%.*]] = extractvalue { float, float } [[CALL]], 1
; CHECK-ARMPL: store float [[EXTRACT_A]], ptr [[ARRAYIDX2:%.*]], align 4
; CHECK-ARMPL: store float [[EXTRACT_B]], ptr [[ARRAYIDX4:%.*]], align 4
; CHECK-ARMPL: [[IF_MERGE:.*:]]
; CHECK-ARMPL: [[FOR_END:.*:]]
;
entry:
br label %for.body

for.body:
%iv = phi i64 [ %iv.next, %if.merge ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float, ptr %in, i64 %iv
%in_val = load float, ptr %arrayidx, align 4
%if_cond = fcmp olt float %in_val, %x
br i1 %if_cond, label %if.then, label %if.merge

if.then:
%call = tail call { float, float } @llvm.sincos.f32(float %in_val)
%extract_a = extractvalue { float, float } %call, 0
%extract_b = extractvalue { float, float } %call, 1
%arrayidx2 = getelementptr inbounds float, ptr %out_a, i64 %iv
store float %extract_a, ptr %arrayidx2, align 4
%arrayidx4 = getelementptr inbounds float, ptr %out_b, i64 %iv
store float %extract_b, ptr %arrayidx4, align 4
br label %if.merge

if.merge:
%iv.next = add nuw nsw i64 %iv, 1
%cond = icmp slt i64 %iv.next, 1024
br i1 %cond, label %for.body, label %for.end

for.end:
ret void
}
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