llvm/test/Transforms/LoopVectorize/RISCV/f16.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -mattr=+v -S | FileCheck %s -check-prefix=NO-ZVFHMIN
; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -mattr=+v -S -prefer-predicate-over-epilogue=scalar-epilogue | FileCheck %s -check-prefix=NO-ZVFHMIN
; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -mattr=+v -S -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue | FileCheck %s -check-prefix=NO-ZVFHMIN
; RUN: opt < %s -passes=loop-vectorize -mtriple riscv64 -mattr=+v,+zvfhmin -S | FileCheck %s -check-prefix=ZVFHMIN

define void @fadd(ptr noalias %a, ptr noalias %b, i64 %n) {
; NO-ZVFHMIN-LABEL: define void @fadd(
; NO-ZVFHMIN-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
; NO-ZVFHMIN-NEXT:  [[ENTRY:.*]]:
; NO-ZVFHMIN-NEXT:    br label %[[LOOP:.*]]
; NO-ZVFHMIN:       [[LOOP]]:
; NO-ZVFHMIN-NEXT:    [[I:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[I_NEXT:%.*]], %[[LOOP]] ]
; NO-ZVFHMIN-NEXT:    [[A_GEP:%.*]] = getelementptr half, ptr [[A]], i64 [[I]]
; NO-ZVFHMIN-NEXT:    [[B_GEP:%.*]] = getelementptr half, ptr [[B]], i64 [[I]]
; NO-ZVFHMIN-NEXT:    [[X:%.*]] = load half, ptr [[A_GEP]], align 2
; NO-ZVFHMIN-NEXT:    [[Y:%.*]] = load half, ptr [[B_GEP]], align 2
; NO-ZVFHMIN-NEXT:    [[Z:%.*]] = fadd half [[X]], [[Y]]
; NO-ZVFHMIN-NEXT:    store half [[Z]], ptr [[A_GEP]], align 2
; NO-ZVFHMIN-NEXT:    [[I_NEXT]] = add i64 [[I]], 1
; NO-ZVFHMIN-NEXT:    [[DONE:%.*]] = icmp eq i64 [[I_NEXT]], [[N]]
; NO-ZVFHMIN-NEXT:    br i1 [[DONE]], label %[[EXIT:.*]], label %[[LOOP]]
; NO-ZVFHMIN:       [[EXIT]]:
; NO-ZVFHMIN-NEXT:    ret void
;
; ZVFHMIN-LABEL: define void @fadd(
; ZVFHMIN-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
; ZVFHMIN-NEXT:  [[ENTRY:.*:]]
; ZVFHMIN-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; ZVFHMIN:       [[VECTOR_PH]]:
; ZVFHMIN-NEXT:    br label %[[VECTOR_BODY:.*]]
; ZVFHMIN:       [[VECTOR_BODY]]:
; ZVFHMIN-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_EVL_NEXT:%.*]], %[[VECTOR_BODY]] ]
; ZVFHMIN-NEXT:    [[AVL:%.*]] = phi i64 [ [[N]], %[[VECTOR_PH]] ], [ [[AVL_NEXT:%.*]], %[[VECTOR_BODY]] ]
; ZVFHMIN-NEXT:    [[TMP6:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[AVL]], i32 8, i1 true)
; ZVFHMIN-NEXT:    [[TMP1:%.*]] = getelementptr half, ptr [[A]], i64 [[INDEX]]
; ZVFHMIN-NEXT:    [[TMP2:%.*]] = getelementptr half, ptr [[B]], i64 [[INDEX]]
; ZVFHMIN-NEXT:    [[WIDE_LOAD:%.*]] = call <vscale x 8 x half> @llvm.vp.load.nxv8f16.p0(ptr align 2 [[TMP1]], <vscale x 8 x i1> splat (i1 true), i32 [[TMP6]])
; ZVFHMIN-NEXT:    [[WIDE_LOAD1:%.*]] = call <vscale x 8 x half> @llvm.vp.load.nxv8f16.p0(ptr align 2 [[TMP2]], <vscale x 8 x i1> splat (i1 true), i32 [[TMP6]])
; ZVFHMIN-NEXT:    [[TMP11:%.*]] = fadd <vscale x 8 x half> [[WIDE_LOAD]], [[WIDE_LOAD1]]
; ZVFHMIN-NEXT:    call void @llvm.vp.store.nxv8f16.p0(<vscale x 8 x half> [[TMP11]], ptr align 2 [[TMP1]], <vscale x 8 x i1> splat (i1 true), i32 [[TMP6]])
; ZVFHMIN-NEXT:    [[TMP13:%.*]] = zext i32 [[TMP6]] to i64
; ZVFHMIN-NEXT:    [[INDEX_EVL_NEXT]] = add i64 [[TMP13]], [[INDEX]]
; ZVFHMIN-NEXT:    [[AVL_NEXT]] = sub nuw i64 [[AVL]], [[TMP13]]
; ZVFHMIN-NEXT:    [[TMP7:%.*]] = icmp eq i64 [[AVL_NEXT]], 0
; ZVFHMIN-NEXT:    br i1 [[TMP7]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; ZVFHMIN:       [[MIDDLE_BLOCK]]:
; ZVFHMIN-NEXT:    br label %[[EXIT:.*]]
; ZVFHMIN:       [[SCALAR_PH]]:
; ZVFHMIN-NEXT:    br label %[[LOOP:.*]]
; ZVFHMIN:       [[LOOP]]:
; ZVFHMIN-NEXT:    [[I:%.*]] = phi i64 [ 0, %[[SCALAR_PH]] ], [ [[I_NEXT:%.*]], %[[LOOP]] ]
; ZVFHMIN-NEXT:    [[A_GEP:%.*]] = getelementptr half, ptr [[A]], i64 [[I]]
; ZVFHMIN-NEXT:    [[B_GEP:%.*]] = getelementptr half, ptr [[B]], i64 [[I]]
; ZVFHMIN-NEXT:    [[X:%.*]] = load half, ptr [[A_GEP]], align 2
; ZVFHMIN-NEXT:    [[Y:%.*]] = load half, ptr [[B_GEP]], align 2
; ZVFHMIN-NEXT:    [[Z:%.*]] = fadd half [[X]], [[Y]]
; ZVFHMIN-NEXT:    store half [[Z]], ptr [[A_GEP]], align 2
; ZVFHMIN-NEXT:    [[I_NEXT]] = add i64 [[I]], 1
; ZVFHMIN-NEXT:    [[DONE:%.*]] = icmp eq i64 [[I_NEXT]], [[N]]
; ZVFHMIN-NEXT:    br i1 [[DONE]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP4:![0-9]+]]
; ZVFHMIN:       [[EXIT]]:
; ZVFHMIN-NEXT:    ret void
;
; NO-ZVFHMIN-PREDICATED-LABEL: define void @fadd(
; NO-ZVFHMIN-PREDICATED-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] {
; NO-ZVFHMIN-PREDICATED-NEXT:  [[ENTRY:.*]]:
; NO-ZVFHMIN-PREDICATED-NEXT:    br label %[[LOOP:.*]]
; NO-ZVFHMIN-PREDICATED:       [[LOOP]]:
; NO-ZVFHMIN-PREDICATED-NEXT:    [[I:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[I_NEXT:%.*]], %[[LOOP]] ]
; NO-ZVFHMIN-PREDICATED-NEXT:    [[A_GEP:%.*]] = getelementptr half, ptr [[A]], i64 [[I]]
; NO-ZVFHMIN-PREDICATED-NEXT:    [[B_GEP:%.*]] = getelementptr half, ptr [[B]], i64 [[I]]
; NO-ZVFHMIN-PREDICATED-NEXT:    [[X:%.*]] = load half, ptr [[A_GEP]], align 2
; NO-ZVFHMIN-PREDICATED-NEXT:    [[Y:%.*]] = load half, ptr [[B_GEP]], align 2
; NO-ZVFHMIN-PREDICATED-NEXT:    [[Z:%.*]] = fadd half [[X]], [[Y]]
; NO-ZVFHMIN-PREDICATED-NEXT:    store half [[Z]], ptr [[A_GEP]], align 2
; NO-ZVFHMIN-PREDICATED-NEXT:    [[I_NEXT]] = add i64 [[I]], 1
; NO-ZVFHMIN-PREDICATED-NEXT:    [[DONE:%.*]] = icmp eq i64 [[I_NEXT]], [[N]]
; NO-ZVFHMIN-PREDICATED-NEXT:    br i1 [[DONE]], label %[[EXIT:.*]], label %[[LOOP]]
; NO-ZVFHMIN-PREDICATED:       [[EXIT]]:
; NO-ZVFHMIN-PREDICATED-NEXT:    ret void
entry:
  br label %loop
loop:
  %i = phi i64 [0, %entry], [%i.next, %loop]
  %a.gep = getelementptr half, ptr %a, i64 %i
  %b.gep = getelementptr half, ptr %b, i64 %i
  %x = load half, ptr %a.gep
  %y = load half, ptr %b.gep
  %z = fadd half %x, %y
  store half %z, ptr %a.gep
  %i.next = add i64 %i, 1
  %done = icmp eq i64 %i.next, %n
  br i1 %done, label %exit, label %loop
exit:
  ret void
}