llvm/test/Transforms/LoopVectorize/RISCV/vf-will-not-generate-any-vector-insts.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt  -mattr=+v -passes=loop-vectorize -S %s | FileCheck %s

target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128"
target triple = "riscv64-unknown-unknown-elf"

define void @vf_will_not_generate_any_vector_insts(ptr %src, ptr %dst) {
; CHECK-LABEL: define void @vf_will_not_generate_any_vector_insts(
; CHECK-SAME: ptr [[SRC:%.*]], ptr [[DST:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_MEMCHECK:.*]]
; CHECK:       [[VECTOR_MEMCHECK]]:
; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[DST]], i64 4
; CHECK-NEXT:    [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[SRC]], i64 4
; CHECK-NEXT:    [[BOUND0:%.*]] = icmp ult ptr [[DST]], [[SCEVGEP1]]
; CHECK-NEXT:    [[BOUND1:%.*]] = icmp ult ptr [[SRC]], [[SCEVGEP]]
; CHECK-NEXT:    [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
; CHECK-NEXT:    br i1 [[FOUND_CONFLICT]], label %[[SCALAR_PH]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 4 x ptr> poison, ptr [[DST]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 4 x ptr> [[BROADCAST_SPLATINSERT]], <vscale x 4 x ptr> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[AVL:%.*]] = phi i64 [ 100, %[[VECTOR_PH]] ], [ [[AVL_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP5:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[AVL]], i32 4, i1 true)
; CHECK-NEXT:    [[TMP6:%.*]] = load i32, ptr [[SRC]], align 4, !alias.scope [[META0:![0-9]+]]
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT2:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[TMP6]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT3:%.*]] = shufflevector <vscale x 4 x i32> [[BROADCAST_SPLATINSERT2]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @llvm.vp.scatter.nxv4i32.nxv4p0(<vscale x 4 x i32> [[BROADCAST_SPLAT3]], <vscale x 4 x ptr> align 4 [[BROADCAST_SPLAT]], <vscale x 4 x i1> splat (i1 true), i32 [[TMP5]]), !alias.scope [[META3:![0-9]+]], !noalias [[META0]]
; CHECK-NEXT:    [[TMP7:%.*]] = zext i32 [[TMP5]] to i64
; CHECK-NEXT:    [[AVL_NEXT]] = sub nuw i64 [[AVL]], [[TMP7]]
; CHECK-NEXT:    [[TMP8:%.*]] = icmp eq i64 [[AVL_NEXT]], 0
; CHECK-NEXT:    br i1 [[TMP8]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[EXIT:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ 0, %[[VECTOR_MEMCHECK]] ]
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[TMP2:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[TMP3:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[DOTPRE:%.*]] = load i32, ptr [[SRC]], align 4
; CHECK-NEXT:    store i32 [[DOTPRE]], ptr [[DST]], align 4
; CHECK-NEXT:    [[TMP3]] = add nuw i64 [[TMP2]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[TMP3]], 100
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %0 = phi i64 [ 0, %entry ], [ %1, %loop ]
  %.pre = load i32, ptr %src, align 4
  store i32 %.pre, ptr %dst, align 4
  %1 = add nuw i64 %0, 1
  %ec = icmp eq i64 %1, 100
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}
;.
; CHECK: [[META0]] = !{[[META1:![0-9]+]]}
; CHECK: [[META1]] = distinct !{[[META1]], [[META2:![0-9]+]]}
; CHECK: [[META2]] = distinct !{[[META2]], !"LVerDomain"}
; CHECK: [[META3]] = !{[[META4:![0-9]+]]}
; CHECK: [[META4]] = distinct !{[[META4]], [[META2]]}
; CHECK: [[LOOP5]] = distinct !{[[LOOP5]], [[META6:![0-9]+]], [[META7:![0-9]+]], [[META8:![0-9]+]]}
; CHECK: [[META6]] = !{!"llvm.loop.isvectorized", i32 1}
; CHECK: [[META7]] = !{!"llvm.loop.isvectorized.tailfoldingstyle", !"evl"}
; CHECK: [[META8]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[LOOP9]] = distinct !{[[LOOP9]], [[META6]]}
;.