llvm/test/Transforms/LoopVectorize/RISCV/tail-folding-gather-scatter.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=loop-vectorize \
; RUN: -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue \
; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck %s --check-prefix=IF-EVL

; RUN: opt -passes=loop-vectorize \
; RUN: -prefer-predicate-over-epilogue=scalar-epilogue \
; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck %s --check-prefix=NO-VP

define void @gather_scatter(ptr noalias %in, ptr noalias %out, ptr noalias %index, i64 %n) {
; IF-EVL-LABEL: @gather_scatter(
; IF-EVL-NEXT:  entry:
; IF-EVL-NEXT:    br label [[FOR_BODY1:%.*]]
; IF-EVL:       for.body:
; IF-EVL-NEXT:    [[INDVARS_IV1:%.*]] = phi i64 [ 0, [[SCALAR_PH:%.*]] ], [ [[INDVARS_IV_NEXT1:%.*]], [[FOR_BODY1]] ]
; IF-EVL-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[INDEX:%.*]], i64 [[INDVARS_IV1]]
; IF-EVL-NEXT:    [[TMP0:%.*]] = load i64, ptr [[ARRAYIDX3]], align 8
; IF-EVL-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds float, ptr [[IN:%.*]], i64 [[TMP0]]
; IF-EVL-NEXT:    [[TMP1:%.*]] = load float, ptr [[ARRAYIDX5]], align 4
; IF-EVL-NEXT:    [[ARRAYIDX7:%.*]] = getelementptr inbounds float, ptr [[OUT:%.*]], i64 [[TMP0]]
; IF-EVL-NEXT:    store float [[TMP1]], ptr [[ARRAYIDX7]], align 4
; IF-EVL-NEXT:    [[INDVARS_IV_NEXT1]] = add nuw nsw i64 [[INDVARS_IV1]], 1
; IF-EVL-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT1]], [[N:%.*]]
; IF-EVL-NEXT:    br i1 [[EXITCOND_NOT]], label [[FOR_END:%.*]], label [[FOR_BODY1]]
; IF-EVL:       for.end:
; IF-EVL-NEXT:    ret void
;
; NO-VP-LABEL: @gather_scatter(
; NO-VP-NEXT:  entry:
; NO-VP-NEXT:    br label [[FOR_BODY1:%.*]]
; NO-VP:       for.body:
; NO-VP-NEXT:    [[INDVARS_IV1:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_NEXT1:%.*]], [[FOR_BODY1]] ]
; NO-VP-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[INDEX:%.*]], i64 [[INDVARS_IV1]]
; NO-VP-NEXT:    [[TMP0:%.*]] = load i64, ptr [[ARRAYIDX3]], align 8
; NO-VP-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds float, ptr [[IN:%.*]], i64 [[TMP0]]
; NO-VP-NEXT:    [[TMP1:%.*]] = load float, ptr [[ARRAYIDX5]], align 4
; NO-VP-NEXT:    [[ARRAYIDX7:%.*]] = getelementptr inbounds float, ptr [[OUT:%.*]], i64 [[TMP0]]
; NO-VP-NEXT:    store float [[TMP1]], ptr [[ARRAYIDX7]], align 4
; NO-VP-NEXT:    [[INDVARS_IV_NEXT1]] = add nuw nsw i64 [[INDVARS_IV1]], 1
; NO-VP-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT1]], [[N:%.*]]
; NO-VP-NEXT:    br i1 [[EXITCOND_NOT]], label [[FOR_END:%.*]], label [[FOR_BODY1]]
; NO-VP:       for.end:
; NO-VP-NEXT:    ret void
;
entry:
  br label %for.body

for.body:
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %arrayidx3 = getelementptr inbounds i32, ptr %index, i64 %indvars.iv
  %0 = load i64, ptr %arrayidx3, align 8
  %arrayidx5 = getelementptr inbounds float, ptr %in, i64 %0
  %1 = load float, ptr %arrayidx5, align 4
  %arrayidx7 = getelementptr inbounds float, ptr %out, i64 %0
  store float %1, ptr %arrayidx7, align 4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %n
  br i1 %exitcond.not, label %for.end, label %for.body

for.end:
  ret void
}