llvm-project/llvm/test/Transforms/LoopVectorize/minimumnum-maximumnum-reductions.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=loop-vectorize -force-vector-width=2 -force-vector-interleave=2 -S %s | FileCheck %s
; RUN: opt -passes=loop-vectorize -force-vector-width=2 -force-vector-interleave=2 -prefer-inloop-reductions -S %s | FileCheck %s

define float @maximumnum_intrinsic(ptr readonly %x) {
; CHECK-LABEL: define float @maximumnum_intrinsic(
; CHECK-SAME: ptr readonly [[X:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[RED:%.*]] = phi float [ 0.000000e+00, %[[ENTRY]] ], [ [[RED_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds float, ptr [[X]], i32 [[IV]]
; CHECK-NEXT:    [[L:%.*]] = load float, ptr [[GEP]], align 4
; CHECK-NEXT:    [[RED_NEXT]] = tail call float @llvm.maximumnum.f32(float [[RED]], float [[L]])
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i32 [[INC]], 1024
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    [[RED_NEXT_LCSSA:%.*]] = phi float [ [[RED_NEXT]], %[[LOOP]] ]
; CHECK-NEXT:    ret float [[RED_NEXT_LCSSA]]
;
entry:
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %inc, %loop ]
  %red = phi float [ 0.000000e+00, %entry ], [ %red.next, %loop ]
  %gep = getelementptr inbounds float, ptr %x, i32 %iv
  %l = load float, ptr %gep, align 4
  %red.next = tail call float @llvm.maximumnum.f32(float %red, float %l)
  %inc = add nuw nsw i32 %iv, 1
  %ec = icmp eq i32 %inc, 1024
  br i1 %ec, label %exit, label %loop

exit:
  ret float %red.next
}

define float @maximumnum_intrinsic_fast(ptr readonly %x) {
; CHECK-LABEL: define float @maximumnum_intrinsic_fast(
; CHECK-SAME: ptr readonly [[X:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[RED:%.*]] = phi float [ 0.000000e+00, %[[ENTRY]] ], [ [[RED_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds float, ptr [[X]], i32 [[IV]]
; CHECK-NEXT:    [[L:%.*]] = load float, ptr [[GEP]], align 4
; CHECK-NEXT:    [[RED_NEXT]] = tail call fast float @llvm.maximumnum.f32(float [[RED]], float [[L]])
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i32 [[INC]], 1024
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    [[RED_NEXT_LCSSA:%.*]] = phi float [ [[RED_NEXT]], %[[LOOP]] ]
; CHECK-NEXT:    ret float [[RED_NEXT_LCSSA]]
;
entry:
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %inc, %loop ]
  %red = phi float [ 0.000000e+00, %entry ], [ %red.next, %loop ]
  %gep = getelementptr inbounds float, ptr %x, i32 %iv
  %l = load float, ptr %gep, align 4
  %red.next = tail call fast float @llvm.maximumnum.f32(float %red, float %l)
  %inc = add nuw nsw i32 %iv, 1
  %ec = icmp eq i32 %inc, 1024
  br i1 %ec, label %exit, label %loop

exit:
  ret float %red.next
}

define float @minimumnum_intrinsic(ptr readonly %x) {
; CHECK-LABEL: define float @minimumnum_intrinsic(
; CHECK-SAME: ptr readonly [[X:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[RED:%.*]] = phi float [ 0.000000e+00, %[[ENTRY]] ], [ [[RED_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds float, ptr [[X]], i32 [[IV]]
; CHECK-NEXT:    [[L:%.*]] = load float, ptr [[GEP]], align 4
; CHECK-NEXT:    [[RED_NEXT]] = tail call float @llvm.minimumnum.f32(float [[RED]], float [[L]])
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i32 [[INC]], 1024
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    [[RED_NEXT_LCSSA:%.*]] = phi float [ [[RED_NEXT]], %[[LOOP]] ]
; CHECK-NEXT:    ret float [[RED_NEXT_LCSSA]]
;
entry:
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %inc, %loop ]
  %red = phi float [ 0.000000e+00, %entry ], [ %red.next, %loop ]
  %gep = getelementptr inbounds float, ptr %x, i32 %iv
  %l = load float, ptr %gep, align 4
  %red.next = tail call float @llvm.minimumnum.f32(float %red, float %l)
  %inc = add nuw nsw i32 %iv, 1
  %ec = icmp eq i32 %inc, 1024
  br i1 %ec, label %exit, label %loop

exit:
  ret float %red.next
}

define float @minimumnum_intrinsic_fast(ptr readonly %x) {
; CHECK-LABEL: define float @minimumnum_intrinsic_fast(
; CHECK-SAME: ptr readonly [[X:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[RED:%.*]] = phi float [ 0.000000e+00, %[[ENTRY]] ], [ [[RED_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds float, ptr [[X]], i32 [[IV]]
; CHECK-NEXT:    [[L:%.*]] = load float, ptr [[GEP]], align 4
; CHECK-NEXT:    [[RED_NEXT]] = tail call fast float @llvm.minimumnum.f32(float [[RED]], float [[L]])
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i32 [[INC]], 1024
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    [[RED_NEXT_LCSSA:%.*]] = phi float [ [[RED_NEXT]], %[[LOOP]] ]
; CHECK-NEXT:    ret float [[RED_NEXT_LCSSA]]
;
entry:
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %inc, %loop ]
  %red = phi float [ 0.000000e+00, %entry ], [ %red.next, %loop ]
  %gep = getelementptr inbounds float, ptr %x, i32 %iv
  %l = load float, ptr %gep, align 4
  %red.next = tail call fast float @llvm.minimumnum.f32(float %red, float %l)
  %inc = add nuw nsw i32 %iv, 1
  %ec = icmp eq i32 %inc, 1024
  br i1 %ec, label %exit, label %loop

exit:
  ret float %red.next
}

declare float @llvm.minimumnum.f32(float, float)
declare float @llvm.maximumnum.f32(float, float)