xref: /llvm-project/llvm/test/Transforms/LoopVectorize/scalable-iv-outside-user.ll (revision 8df64ed77727ab9b7540819f2fe64379e88a50be)

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -scalable-vectorization=on -force-target-supports-scalable-vectors=true -passes=loop-vectorize -force-vector-width=2 -force-vector-interleave=2 -S %s | FileCheck %s

define i32 @iv_live_out_wide(ptr %dst) {
; CHECK-LABEL: define i32 @iv_live_out_wide(
; CHECK-SAME: ptr [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[STEP_1:%.*]] = sext i8 0 to i32
; CHECK-NEXT:    [[STEP_2:%.*]] = add nsw i32 [[STEP_1]], 1
; CHECK-NEXT:    [[TMP0:%.*]] = call i32 @llvm.vscale.i32()
; CHECK-NEXT:    [[TMP1:%.*]] = mul i32 [[TMP0]], 4
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 2000, [[TMP1]]
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[TMP2:%.*]] = call i32 @llvm.vscale.i32()
; CHECK-NEXT:    [[TMP3:%.*]] = mul i32 [[TMP2]], 4
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i32 2000, [[TMP3]]
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i32 2000, [[N_MOD_VF]]
; CHECK-NEXT:    [[TMP4:%.*]] = call i32 @llvm.vscale.i32()
; CHECK-NEXT:    [[TMP5:%.*]] = mul i32 [[TMP4]], 2
; CHECK-NEXT:    [[TMP6:%.*]] = mul i32 [[TMP5]], 2
; CHECK-NEXT:    [[TMP7:%.*]] = call <vscale x 2 x i32> @llvm.stepvector.nxv2i32()
; CHECK-NEXT:    [[TMP8:%.*]] = mul <vscale x 2 x i32> [[TMP7]], splat (i32 1)
; CHECK-NEXT:    [[INDUCTION:%.*]] = add <vscale x 2 x i32> zeroinitializer, [[TMP8]]
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 2 x i32> poison, i32 [[TMP5]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 2 x i32> [[BROADCAST_SPLATINSERT]], <vscale x 2 x i32> poison, <vscale x 2 x i32> zeroinitializer
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <vscale x 2 x i32> poison, i32 [[STEP_2]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT2:%.*]] = shufflevector <vscale x 2 x i32> [[BROADCAST_SPLATINSERT1]], <vscale x 2 x i32> poison, <vscale x 2 x i32> zeroinitializer
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <vscale x 2 x i32> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[STEP_ADD:%.*]] = add <vscale x 2 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
; CHECK-NEXT:    [[TMP9:%.*]] = add i32 [[INDEX]], 0
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i16, ptr [[DST]], i32 [[TMP9]]
; CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds i16, ptr [[TMP10]], i32 0
; CHECK-NEXT:    [[TMP12:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT:    [[TMP13:%.*]] = mul i64 [[TMP12]], 2
; CHECK-NEXT:    [[TMP14:%.*]] = getelementptr inbounds i16, ptr [[TMP10]], i64 [[TMP13]]
; CHECK-NEXT:    store <vscale x 2 x i16> zeroinitializer, ptr [[TMP11]], align 2
; CHECK-NEXT:    store <vscale x 2 x i16> zeroinitializer, ptr [[TMP14]], align 2
; CHECK-NEXT:    [[TMP15:%.*]] = add <vscale x 2 x i32> [[BROADCAST_SPLAT2]], [[STEP_ADD]]
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], [[TMP6]]
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <vscale x 2 x i32> [[STEP_ADD]], [[BROADCAST_SPLAT]]
; CHECK-NEXT:    [[TMP16:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP16]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[TMP17:%.*]] = call i32 @llvm.vscale.i32()
; CHECK-NEXT:    [[TMP18:%.*]] = mul i32 [[TMP17]], 2
; CHECK-NEXT:    [[TMP19:%.*]] = sub i32 [[TMP18]], 1
; CHECK-NEXT:    [[TMP20:%.*]] = extractelement <vscale x 2 x i32> [[TMP15]], i32 [[TMP19]]
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i32 2000, [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[E_EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i16, ptr [[DST]], i32 [[IV]]
; CHECK-NEXT:    store i16 0, ptr [[GEP_DST]], align 2
; CHECK-NEXT:    [[IV_NEXT]] = add i32 [[STEP_2]], [[IV]]
; CHECK-NEXT:    [[CMP_I:%.*]] = icmp slt i32 [[IV_NEXT]], 2000
; CHECK-NEXT:    br i1 [[CMP_I]], label %[[LOOP]], label %[[E_EXIT]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK:       [[E_EXIT]]:
; CHECK-NEXT:    [[RES:%.*]] = phi i32 [ [[IV_NEXT]], %[[LOOP]] ], [ [[TMP20]], %[[MIDDLE_BLOCK]] ]
; CHECK-NEXT:    ret i32 [[RES]]
;
entry:
  %step.1 = sext i8 0 to i32
  %step.2 = add nsw i32 %step.1, 1
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.dst = getelementptr inbounds i16, ptr %dst, i32 %iv
  store i16 0, ptr %gep.dst, align 2
  %iv.next = add i32 %step.2, %iv
  %cmp.i = icmp slt i32 %iv.next, 2000
  br i1 %cmp.i, label %loop, label %e.exit

e.exit:
  %res = phi i32 [ %iv.next, %loop ]
  ret i32 %res
}
;.
; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]}
;.