llvm/test/CodeGen/ARM/ParallelDSP/self-ref-bug.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -mtriple=thumbv7-unknown-linux-gnueabihf < %s -arm-parallel-dsp -verify -S | FileCheck %s

target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"

define i32 @test(ptr %b) {
; CHECK-LABEL: @test(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TMP0:%.*]] = load i16, ptr [[B:%.*]], align 2
; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[B]], align 2
; CHECK-NEXT:    [[TMP2:%.*]] = trunc i32 [[TMP1]] to i16
; CHECK-NEXT:    [[TMP3:%.*]] = sext i16 [[TMP2]] to i32
; CHECK-NEXT:    [[TMP4:%.*]] = lshr i32 [[TMP1]], 16
; CHECK-NEXT:    [[TMP5:%.*]] = trunc i32 [[TMP4]] to i16
; CHECK-NEXT:    [[TMP6:%.*]] = sext i16 [[TMP5]] to i32
; CHECK-NEXT:    [[CONV:%.*]] = sext i16 [[TMP0]] to i32
; CHECK-NEXT:    [[ARRAYIDX1:%.*]] = getelementptr inbounds i16, ptr [[B]], i32 3
; CHECK-NEXT:    [[TMP7:%.*]] = load i16, ptr [[ARRAYIDX1]], align 2
; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[ARRAYIDX1]], align 2
; CHECK-NEXT:    [[TMP9:%.*]] = trunc i32 [[TMP8]] to i16
; CHECK-NEXT:    [[TMP10:%.*]] = call i32 @llvm.arm.smlad(i32 [[TMP8]], i32 [[TMP1]], i32 0)
; CHECK-NEXT:    [[TMP11:%.*]] = sext i16 [[TMP9]] to i32
; CHECK-NEXT:    [[TMP12:%.*]] = lshr i32 [[TMP8]], 16
; CHECK-NEXT:    [[TMP13:%.*]] = trunc i32 [[TMP12]] to i16
; CHECK-NEXT:    [[TMP14:%.*]] = sext i16 [[TMP13]] to i32
; CHECK-NEXT:    [[CONV2:%.*]] = sext i16 [[TMP7]] to i32
; CHECK-NEXT:    [[MUL:%.*]] = mul nsw i32 [[TMP11]], [[TMP3]]
; CHECK-NEXT:    [[INCDEC_PTR:%.*]] = getelementptr inbounds i16, ptr [[B]], i32 1
; CHECK-NEXT:    [[TMP15:%.*]] = load i16, ptr [[INCDEC_PTR]], align 2
; CHECK-NEXT:    [[CONV4:%.*]] = sext i16 [[TMP15]] to i32
; CHECK-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds i16, ptr [[B]], i32 4
; CHECK-NEXT:    [[TMP16:%.*]] = load i16, ptr [[ARRAYIDX5]], align 2
; CHECK-NEXT:    [[CONV6:%.*]] = sext i16 [[TMP16]] to i32
; CHECK-NEXT:    [[MUL7:%.*]] = mul nsw i32 [[TMP14]], [[TMP6]]
; CHECK-NEXT:    [[ADD9:%.*]] = add nsw i32 [[MUL7]], [[MUL]]
; CHECK-NEXT:    [[MUL13:%.*]] = mul nsw i32 0, 0
; CHECK-NEXT:    [[ADD15:%.*]] = add nsw i32 [[MUL13]], [[TMP10]]
; CHECK-NEXT:    ret i32 [[ADD15]]
;
entry:
  %0 = load i16, ptr %b, align 2
  %conv = sext i16 %0 to i32
  %arrayidx1 = getelementptr inbounds i16, ptr %b, i32 3
  %1 = load i16, ptr %arrayidx1, align 2
  %conv2 = sext i16 %1 to i32
  %mul = mul nsw i32 %conv2, %conv
  %incdec.ptr = getelementptr inbounds i16, ptr %b, i32 1
  %2 = load i16, ptr %incdec.ptr, align 2
  %conv4 = sext i16 %2 to i32
  %arrayidx5 = getelementptr inbounds i16, ptr %b, i32 4
  %3 = load i16, ptr %arrayidx5, align 2
  %conv6 = sext i16 %3 to i32
  %mul7 = mul nsw i32 %conv6, %conv4
  %add9 = add nsw i32 %mul7, %mul
  %mul13 = mul nsw i32 0, 0
  %add15 = add nsw i32 %mul13, %add9
  ret i32 %add15
}