test/Transforms/SandboxVectorizer/scheduler.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=sandbox-vectorizer -sbvec-vec-reg-bits=1024 -sbvec-allow-non-pow2 -sbvec-passes="seed-collection<tr-save,bottom-up-vec,tr-accept>" %s -S | FileCheck %s

; This used to crash because the newly added pack   instructions would not update
; the DAG and scheduler, leading to def-after-use.
define void @check_dag_scheduler_update(ptr noalias %p, ptr noalias %p1) {
; CHECK-LABEL: define void @check_dag_scheduler_update(
; CHECK-SAME: ptr noalias [[P:%.*]], ptr noalias [[P1:%.*]]) {
; CHECK-NEXT:    [[I:%.*]] = load i32, ptr [[P]], align 4
; CHECK-NEXT:    [[ARRAYIDX4:%.*]] = getelementptr i32, ptr [[P]], i64 32
; CHECK-NEXT:    [[I2:%.*]] = load i32, ptr [[ARRAYIDX4]], align 4
; CHECK-NEXT:    [[ARRAYIDX11:%.*]] = getelementptr i32, ptr [[P]], i64 33
; CHECK-NEXT:    [[I4:%.*]] = load i32, ptr [[ARRAYIDX11]], align 4
; CHECK-NEXT:    [[ARRAYIDX18:%.*]] = getelementptr i32, ptr [[P]], i64 34
; CHECK-NEXT:    [[I6:%.*]] = load i32, ptr [[ARRAYIDX18]], align 4
; CHECK-NEXT:    [[PACK:%.*]] = insertelement <4 x i32> poison, i32 [[I]], i32 0
; CHECK-NEXT:    [[PACK1:%.*]] = insertelement <4 x i32> [[PACK]], i32 [[I2]], i32 1
; CHECK-NEXT:    [[PACK2:%.*]] = insertelement <4 x i32> [[PACK1]], i32 [[I4]], i32 2
; CHECK-NEXT:    [[PACK3:%.*]] = insertelement <4 x i32> [[PACK2]], i32 [[I6]], i32 3
; CHECK-NEXT:    [[VECL:%.*]] = load <4 x i32>, ptr [[P]], align 4
; CHECK-NEXT:    [[VEC:%.*]] = add nsw <4 x i32> [[PACK3]], [[VECL]]
; CHECK-NEXT:    store <4 x i32> [[VEC]], ptr [[P1]], align 4
; CHECK-NEXT:    ret void
;
  %i = load i32, ptr %p
  %i1 = load i32, ptr %p
  %add = add nsw i32 %i, %i1
  store i32 %add, ptr %p1
  %arrayidx4 = getelementptr i32, ptr %p, i64 32
  %i2 = load i32, ptr %arrayidx4
  %arrayidx6 = getelementptr i32, ptr %p, i64 1
  %i3 = load i32, ptr %arrayidx6
  %add7 = add nsw i32 %i2, %i3
  %arrayidx9 = getelementptr i32, ptr %p1, i64 1
  store i32 %add7, ptr %arrayidx9
  %arrayidx11 = getelementptr i32, ptr %p, i64 33
  %i4 = load i32, ptr %arrayidx11
  %arrayidx13 = getelementptr i32, ptr %p, i64 2
  %i5 = load i32, ptr %arrayidx13
  %add14 = add nsw i32 %i4, %i5
  %arrayidx16 = getelementptr i32, ptr %p1, i64 2
  store i32 %add14, ptr %arrayidx16
  %arrayidx18 = getelementptr i32, ptr %p, i64 34
  %i6 = load i32, ptr %arrayidx18
  %arrayidx19 = getelementptr i32, ptr %p, i64 3
  %i7 = load i32, ptr %arrayidx19
  %add21 = add nsw i32 %i6, %i7
  %arrayidx23 = getelementptr i32, ptr %p1, i64 3
  store i32 %add21, ptr %arrayidx23
  ret void
}

; This used to generate use-before-def because of a buggy update of the
; top-of-schedule variable.
define <4 x float> @check_top_of_schedule(ptr %0) {
; CHECK-LABEL: define <4 x float> @check_top_of_schedule(
; CHECK-SAME: ptr [[TMP0:%.*]]) {
; CHECK-NEXT:    [[INS_1:%.*]] = insertelement <4 x float> zeroinitializer, float poison, i64 0
; CHECK-NEXT:    [[GEP_1:%.*]] = getelementptr double, ptr [[TMP0]], i64 1
; CHECK-NEXT:    [[TRUNC_1:%.*]] = fptrunc double 0.000000e+00 to float
; CHECK-NEXT:    [[INS_2:%.*]] = insertelement <4 x float> [[INS_1]], float [[TRUNC_1]], i64 0
; CHECK-NEXT:    store <2 x double> <double 0.000000e+00, double 1.000000e+00>, ptr [[GEP_1]], align 8
; CHECK-NEXT:    ret <4 x float> [[INS_2]]
;
  %trunc.1 = fptrunc double 0.000000e+00 to float
  %trunc.2 = fptrunc double 1.000000e+00 to float
  %ins.1 = insertelement <4 x float> zeroinitializer, float poison, i64 0
  %ins.2 = insertelement <4 x float> %ins.1, float %trunc.1, i64 0
  %ext.1 = fpext float %trunc.1 to double
  %gep.1  = getelementptr double, ptr %0, i64 1
  store double %ext.1, ptr %gep.1, align 8
  %ext.2 = fpext float %trunc.2 to double
  %gep.2 = getelementptr double, ptr %0, i64 2
  store double %ext.2, ptr %gep.2, align 8
  ret <4 x float> %ins.2
}