llvm/test/Transforms/LoopVectorize/AArch64/wider-VF-for-callinst.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=loop-vectorize,instsimplify -force-vector-interleave=1 -S | FileCheck %s --check-prefixes=WIDE
; RUN: opt < %s -passes=loop-vectorize,instsimplify -force-vector-interleave=1 -vectorizer-maximize-bandwidth-for-vector-calls=false -S | FileCheck %s --check-prefixes=NARROW

target triple = "aarch64-unknown-linux-gnu"

define void @test_widen(ptr noalias %a, ptr readnone %b) #1 {
; WIDE-LABEL: @test_widen(
; WIDE-NEXT:  entry:
; WIDE-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; WIDE:       vector.ph:
; WIDE-NEXT:    [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; WIDE-NEXT:    [[TMP3:%.*]] = mul nuw i64 [[TMP2]], 4
; WIDE-NEXT:    [[N_MOD_VF:%.*]] = urem i64 1025, [[TMP3]]
; WIDE-NEXT:    [[N_VEC:%.*]] = sub i64 1025, [[N_MOD_VF]]
; WIDE-NEXT:    br label [[VECTOR_BODY:%.*]]
; WIDE:       vector.body:
; WIDE-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; WIDE-NEXT:    [[TMP4:%.*]] = getelementptr double, ptr [[B:%.*]], i64 [[INDEX]]
; WIDE-NEXT:    [[WIDE_LOAD:%.*]] = load <vscale x 4 x double>, ptr [[TMP4]], align 8
; WIDE-NEXT:    [[TMP5:%.*]] = fptrunc <vscale x 4 x double> [[WIDE_LOAD]] to <vscale x 4 x float>
; WIDE-NEXT:    [[TMP6:%.*]] = call <vscale x 4 x float> @foo_vector(<vscale x 4 x float> [[TMP5]], <vscale x 4 x i1> splat (i1 true))
; WIDE-NEXT:    [[TMP7:%.*]] = getelementptr inbounds float, ptr [[A:%.*]], i64 [[INDEX]]
; WIDE-NEXT:    store <vscale x 4 x float> [[TMP6]], ptr [[TMP7]], align 4
; WIDE-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP3]]
; WIDE-NEXT:    [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; WIDE-NEXT:    br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; WIDE:       middle.block:
; WIDE-NEXT:    br i1 false, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; WIDE:       scalar.ph:
; WIDE-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; WIDE-NEXT:    br label [[FOR_BODY:%.*]]
; WIDE:       for.body:
; WIDE-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; WIDE-NEXT:    [[GEP:%.*]] = getelementptr double, ptr [[B]], i64 [[INDVARS_IV]]
; WIDE-NEXT:    [[LOAD:%.*]] = load double, ptr [[GEP]], align 8
; WIDE-NEXT:    [[TRUNC:%.*]] = fptrunc double [[LOAD]] to float
; WIDE-NEXT:    [[CALL:%.*]] = call float @foo(float [[TRUNC]]) #[[ATTR2:[0-9]+]]
; WIDE-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[INDVARS_IV]]
; WIDE-NEXT:    store float [[CALL]], ptr [[ARRAYIDX]], align 4
; WIDE-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; WIDE-NEXT:    [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 1025
; WIDE-NEXT:    br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; WIDE:       for.cond.cleanup:
; WIDE-NEXT:    ret void
;
; NARROW-LABEL: @test_widen(
; NARROW-NEXT:  entry:
; NARROW-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; NARROW:       vector.ph:
; NARROW-NEXT:    br label [[VECTOR_BODY:%.*]]
; NARROW:       vector.body:
; NARROW-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; NARROW-NEXT:    [[TMP0:%.*]] = getelementptr double, ptr [[B:%.*]], i64 [[INDEX]]
; NARROW-NEXT:    [[WIDE_LOAD:%.*]] = load <2 x double>, ptr [[TMP0]], align 8
; NARROW-NEXT:    [[TMP1:%.*]] = fptrunc <2 x double> [[WIDE_LOAD]] to <2 x float>
; NARROW-NEXT:    [[TMP2:%.*]] = extractelement <2 x float> [[TMP1]], i32 0
; NARROW-NEXT:    [[TMP3:%.*]] = call float @foo(float [[TMP2]]) #[[ATTR1:[0-9]+]]
; NARROW-NEXT:    [[TMP4:%.*]] = extractelement <2 x float> [[TMP1]], i32 1
; NARROW-NEXT:    [[TMP5:%.*]] = call float @foo(float [[TMP4]]) #[[ATTR1]]
; NARROW-NEXT:    [[TMP6:%.*]] = insertelement <2 x float> poison, float [[TMP3]], i32 0
; NARROW-NEXT:    [[TMP7:%.*]] = insertelement <2 x float> [[TMP6]], float [[TMP5]], i32 1
; NARROW-NEXT:    [[TMP8:%.*]] = getelementptr inbounds float, ptr [[A:%.*]], i64 [[INDEX]]
; NARROW-NEXT:    store <2 x float> [[TMP7]], ptr [[TMP8]], align 4
; NARROW-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; NARROW-NEXT:    [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
; NARROW-NEXT:    br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; NARROW:       middle.block:
; NARROW-NEXT:    br label [[SCALAR_PH]]
; NARROW:       scalar.ph:
; NARROW-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 1024, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; NARROW-NEXT:    br label [[FOR_BODY:%.*]]
; NARROW:       for.body:
; NARROW-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; NARROW-NEXT:    [[GEP:%.*]] = getelementptr double, ptr [[B]], i64 [[INDVARS_IV]]
; NARROW-NEXT:    [[LOAD:%.*]] = load double, ptr [[GEP]], align 8
; NARROW-NEXT:    [[TRUNC:%.*]] = fptrunc double [[LOAD]] to float
; NARROW-NEXT:    [[CALL:%.*]] = call float @foo(float [[TRUNC]]) #[[ATTR1]]
; NARROW-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[INDVARS_IV]]
; NARROW-NEXT:    store float [[CALL]], ptr [[ARRAYIDX]], align 4
; NARROW-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; NARROW-NEXT:    [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 1025
; NARROW-NEXT:    br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; NARROW:       for.cond.cleanup:
; NARROW-NEXT:    ret void
;
entry:
  br label %for.body

for.body:
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %gep = getelementptr double, ptr %b, i64 %indvars.iv
  %load = load double, ptr %gep
  %trunc = fptrunc double %load to float
  %call = call float @foo(float %trunc) #0
  %arrayidx = getelementptr inbounds float, ptr %a, i64 %indvars.iv
  store float %call, ptr %arrayidx
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond = icmp eq i64 %indvars.iv.next, 1025
  br i1 %exitcond, label %for.cond.cleanup, label %for.body

for.cond.cleanup:
  ret void
}

declare float @foo(float)
declare <vscale x 4 x float> @foo_vector(<vscale x 4 x float>, <vscale x 4 x i1>)

attributes #0 = { nounwind "vector-function-abi-variant"="_ZGVsMxv_foo(foo_vector)" }
attributes #1 = { "target-features"="+sve" vscale_range(1,16) "no-trapping-math"="false" }