test/Transforms/LoopVectorize/expand-scev-after-invoke.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
; RUN: opt -p loop-vectorize -force-vector-width=4 -force-vector-interleave=2 -S %s | FileCheck %s

declare i32 @foo()

; Test case for https://github.com/llvm/llvm-project/issues/128838. Make sure
; we do not crash when expanding %step.
define void @test(ptr %dst) personality ptr null {
; CHECK-LABEL: define void @test(
; CHECK-SAME: ptr [[DST:%.*]]) personality ptr null {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[STEP:%.*]] = invoke i32 @foo()
; CHECK-NEXT:            to label %[[LOOP_PREHEADER:.*]] unwind label %[[LPAD:.*]]
; CHECK:       [[LOOP_PREHEADER]]:
; CHECK-NEXT:    br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[STEP]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP0:%.*]] = mul i32 160, [[STEP]]
; CHECK-NEXT:    [[TMP1:%.*]] = mul <4 x i32> splat (i32 4), [[BROADCAST_SPLAT]]
; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[STEP]], i64 0
; CHECK-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <4 x i32> [[DOTSPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP2:%.*]] = mul <4 x i32> <i32 0, i32 1, i32 2, i32 3>, [[DOTSPLAT]]
; CHECK-NEXT:    [[INDUCTION:%.*]] = add <4 x i32> zeroinitializer, [[TMP2]]
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[STEP_ADD:%.*]] = add <4 x i32> [[VEC_IND]], [[TMP1]]
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[INDEX]]
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[TMP4]], i32 0
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i32, ptr [[TMP4]], i32 4
; CHECK-NEXT:    store <4 x i32> [[VEC_IND]], ptr [[TMP5]], align 8
; CHECK-NEXT:    store <4 x i32> [[STEP_ADD]], ptr [[TMP6]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[STEP_ADD]], [[TMP1]]
; CHECK-NEXT:    [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT]], 160
; CHECK-NEXT:    br i1 [[TMP7]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br i1 false, label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 160, %[[MIDDLE_BLOCK]] ], [ 0, %[[LOOP_PREHEADER]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL1:%.*]] = phi i32 [ [[TMP0]], %[[MIDDLE_BLOCK]] ], [ 0, %[[LOOP_PREHEADER]] ]
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[IV_1:%.*]] = phi i64 [ [[ADD:%.*]], %[[LOOP]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[IV_2:%.*]] = phi i32 [ [[IV_2_NEXT:%.*]], %[[LOOP]] ], [ [[BC_RESUME_VAL1]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[ADD]] = add i64 [[IV_1]], 1
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[IV_1]]
; CHECK-NEXT:    store i32 [[IV_2]], ptr [[GEP]], align 8
; CHECK-NEXT:    [[IV_2_NEXT]] = add i32 [[IV_2]], [[STEP]]
; CHECK-NEXT:    [[EC:%.*]] = icmp ult i64 [[IV_1]], 161
; CHECK-NEXT:    br i1 [[EC]], label %[[LOOP]], label %[[EXIT]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
; CHECK:       [[LPAD]]:
; CHECK-NEXT:    [[LANDINGPAD:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT:            cleanup
; CHECK-NEXT:    ret void
;
entry:
  %step = invoke i32 @foo()
  to label %loop unwind label %lpad

loop:
  %iv.1 = phi i64 [ 0, %entry ], [ %add, %loop ]
  %iv.2 = phi i32 [ 0, %entry ], [ %iv.2.next, %loop ]
  %add = add i64 %iv.1, 1
  %gep = getelementptr inbounds i32, ptr %dst, i64 %iv.1
  store i32 %iv.2, ptr %gep, align 8
  %iv.2.next = add i32 %iv.2, %step
  %ec = icmp ult i64 %iv.1, 161
  br i1 %ec, label %loop, label %exit

exit:
  ret void

lpad:
  %landingpad = landingpad { ptr, i32 }
  cleanup
  ret void
}