third_party/llvm-7.0/llvm/test/CodeGen/X86/dag-update-nodetomatch.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s

%struct.i = type { i32, i24 }
%struct.m = type { %struct.i }

@a = local_unnamed_addr global i32 0, align 4
@b = local_unnamed_addr global i16 0, align 2
@c = local_unnamed_addr global i16 0, align 2
@e = local_unnamed_addr global i16 0, align 2
@l = local_unnamed_addr global %struct.i zeroinitializer, align 4
@k = local_unnamed_addr global %struct.m zeroinitializer, align 4

@x0 = local_unnamed_addr global double 0.000000e+00, align 8
@x1 = local_unnamed_addr global i32 0, align 4
@x2 = local_unnamed_addr global i32 0, align 4
@x3 = local_unnamed_addr global i32 0, align 4
@x4 = local_unnamed_addr global i32 0, align 4
@x5 = local_unnamed_addr global double* null, align 8

; Check that compiler does not crash.
; Test for PR30775
define void @_Z1nv() local_unnamed_addr {
; CHECK-LABEL: _Z1nv:
entry:
  %bf.load = load i32, i32* bitcast (i24* getelementptr inbounds (%struct.m, %struct.m* @k, i64 0, i32 0, i32 1) to i32*), align 4
  %0 = load i16, i16* @c, align 2
  %conv = sext i16 %0 to i32
  %1 = load i16, i16* @b, align 2
  %conv1 = sext i16 %1 to i32
  %2 = load i32, i32* @a, align 4
  %tobool = icmp ne i32 %2, 0
  %bf.load3 = load i32, i32* getelementptr inbounds (%struct.i, %struct.i* @l, i64 0, i32 0), align 4
  %bf.shl = shl i32 %bf.load3, 7
  %bf.ashr = ashr exact i32 %bf.shl, 7
  %bf.clear = shl i32 %bf.load, 1
  %factor = and i32 %bf.clear, 131070
  %add13 = add nsw i32 %factor, %conv
  %add15 = add nsw i32 %add13, %conv1
  %bf.ashr.op = sub nsw i32 0, %bf.ashr
  %add28 = select i1 %tobool, i32 %bf.ashr.op, i32 0
  %tobool29 = icmp eq i32 %add15, %add28
  %phitmp = icmp eq i32 %bf.ashr, 0
  %.phitmp = or i1 %phitmp, %tobool29
  %conv37 = zext i1 %.phitmp to i16
  store i16 %conv37, i16* @e, align 2
  %bf.clear39 = and i32 %bf.load, 65535
  %factor53 = shl nuw nsw i32 %bf.clear39, 1
  %add46 = add nsw i32 %factor53, %conv
  %add48 = add nsw i32 %add46, %conv1
  %add48.lobit = lshr i32 %add48, 31
  %add48.lobit.not = xor i32 %add48.lobit, 1
  %add51 = add nuw nsw i32 %add48.lobit.not, %bf.clear39
  %shr = ashr i32 %2, %add51
  %conv52 = trunc i32 %shr to i16
  store i16 %conv52, i16* @b, align 2
  ret void
}

; Test for PR31536
define void @_Z2x6v() local_unnamed_addr {
; CHECK-LABEL: _Z2x6v:
entry:
  %0 = load i32, i32* @x1, align 4
  %and = and i32 %0, 511
  %add = add nuw nsw i32 %and, 1
  store i32 %add, i32* @x4, align 4
  %.pr = load i32, i32* @x3, align 4
  %tobool8 = icmp eq i32 %.pr, 0
  br i1 %tobool8, label %for.end5, label %for.cond1thread-pre-split.lr.ph

for.cond1thread-pre-split.lr.ph:                  ; preds = %entry
  %idx.ext13 = zext i32 %add to i64
  %x5.promoted = load double*, double** @x5, align 8
  %x5.promoted9 = bitcast double* %x5.promoted to i8*
  %1 = xor i32 %.pr, -1
  %2 = zext i32 %1 to i64
  %3 = shl nuw nsw i64 %2, 3
  %4 = add nuw nsw i64 %3, 8
  %5 = mul nuw nsw i64 %4, %idx.ext13
  %uglygep = getelementptr i8, i8* %x5.promoted9, i64 %5
  %.pr6.pre = load i32, i32* @x2, align 4
  %6 = shl nuw nsw i32 %and, 3
  %addconv = add nuw nsw i32 %6, 8
  %7 = zext i32 %addconv to i64
  %scevgep15 = getelementptr double, double* %x5.promoted, i64 1
  %scevgep1516 = bitcast double* %scevgep15 to i8*
  br label %for.cond1thread-pre-split

for.cond1thread-pre-split:                        ; preds = %for.cond1thread-pre-split.lr.ph, %for.inc3
  %indvar = phi i64 [ 0, %for.cond1thread-pre-split.lr.ph ], [ %indvar.next, %for.inc3 ]
  %.pr6 = phi i32 [ %.pr6.pre, %for.cond1thread-pre-split.lr.ph ], [ %.pr611, %for.inc3 ]
  %8 = phi double* [ %x5.promoted, %for.cond1thread-pre-split.lr.ph ], [ %add.ptr, %for.inc3 ]
  %9 = phi i32 [ %.pr, %for.cond1thread-pre-split.lr.ph ], [ %inc4, %for.inc3 ]
  %10 = mul i64 %7, %indvar
  %uglygep14 = getelementptr i8, i8* %x5.promoted9, i64 %10
  %uglygep17 = getelementptr i8, i8* %scevgep1516, i64 %10
  %cmp7 = icmp slt i32 %.pr6, 0
  br i1 %cmp7, label %for.body2.preheader, label %for.inc3

for.body2.preheader:                              ; preds = %for.cond1thread-pre-split
  %11 = sext i32 %.pr6 to i64
  %12 = sext i32 %.pr6 to i64
  %13 = icmp sgt i64 %12, -1
  %smax = select i1 %13, i64 %12, i64 -1
  %14 = add nsw i64 %smax, 1
  %15 = sub nsw i64 %14, %12
  %min.iters.check = icmp ult i64 %15, 4
  br i1 %min.iters.check, label %for.body2.preheader21, label %min.iters.checked

min.iters.checked:                                ; preds = %for.body2.preheader
  %n.vec = and i64 %15, -4
  %cmp.zero = icmp eq i64 %n.vec, 0
  br i1 %cmp.zero, label %for.body2.preheader21, label %vector.memcheck

vector.memcheck:                                  ; preds = %min.iters.checked
  %16 = shl nsw i64 %11, 3
  %scevgep = getelementptr i8, i8* %uglygep14, i64 %16
  %17 = icmp sgt i64 %11, -1
  %smax18 = select i1 %17, i64 %11, i64 -1
  %18 = shl nsw i64 %smax18, 3
  %scevgep19 = getelementptr i8, i8* %uglygep17, i64 %18
  %bound0 = icmp ult i8* %scevgep, bitcast (double* @x0 to i8*)
  %bound1 = icmp ugt i8* %scevgep19, bitcast (double* @x0 to i8*)
  %memcheck.conflict = and i1 %bound0, %bound1
  %ind.end = add nsw i64 %11, %n.vec
  br i1 %memcheck.conflict, label %for.body2.preheader21, label %vector.body.preheader

vector.body.preheader:                            ; preds = %vector.memcheck
  %19 = add nsw i64 %n.vec, -4
  %20 = lshr exact i64 %19, 2
  %21 = and i64 %20, 1
  %lcmp.mod = icmp eq i64 %21, 0
  br i1 %lcmp.mod, label %vector.body.prol.preheader, label %vector.body.prol.loopexit.unr-lcssa

vector.body.prol.preheader:                       ; preds = %vector.body.preheader
  br label %vector.body.prol

vector.body.prol:                                 ; preds = %vector.body.prol.preheader
  %22 = load i64, i64* bitcast (double* @x0 to i64*), align 8
  %23 = insertelement <2 x i64> undef, i64 %22, i32 0
  %24 = shufflevector <2 x i64> %23, <2 x i64> undef, <2 x i32> zeroinitializer
  %25 = insertelement <2 x i64> undef, i64 %22, i32 0
  %26 = shufflevector <2 x i64> %25, <2 x i64> undef, <2 x i32> zeroinitializer
  %27 = getelementptr inbounds double, double* %8, i64 %11
  %28 = bitcast double* %27 to <2 x i64>*
  store <2 x i64> %24, <2 x i64>* %28, align 8
  %29 = getelementptr double, double* %27, i64 2
  %30 = bitcast double* %29 to <2 x i64>*
  store <2 x i64> %26, <2 x i64>* %30, align 8
  br label %vector.body.prol.loopexit.unr-lcssa

vector.body.prol.loopexit.unr-lcssa:              ; preds = %vector.body.preheader, %vector.body.prol
  %index.unr.ph = phi i64 [ 4, %vector.body.prol ], [ 0, %vector.body.preheader ]
  br label %vector.body.prol.loopexit

vector.body.prol.loopexit:                        ; preds = %vector.body.prol.loopexit.unr-lcssa
  %31 = icmp eq i64 %20, 0
  br i1 %31, label %middle.block, label %vector.body.preheader.new

vector.body.preheader.new:                        ; preds = %vector.body.prol.loopexit
  %32 = load i64, i64* bitcast (double* @x0 to i64*), align 8
  %33 = insertelement <2 x i64> undef, i64 %32, i32 0
  %34 = shufflevector <2 x i64> %33, <2 x i64> undef, <2 x i32> zeroinitializer
  %35 = insertelement <2 x i64> undef, i64 %32, i32 0
  %36 = shufflevector <2 x i64> %35, <2 x i64> undef, <2 x i32> zeroinitializer
  %37 = load i64, i64* bitcast (double* @x0 to i64*), align 8
  %38 = insertelement <2 x i64> undef, i64 %37, i32 0
  %39 = shufflevector <2 x i64> %38, <2 x i64> undef, <2 x i32> zeroinitializer
  %40 = insertelement <2 x i64> undef, i64 %37, i32 0
  %41 = shufflevector <2 x i64> %40, <2 x i64> undef, <2 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.body.preheader.new
  %index = phi i64 [ %index.unr.ph, %vector.body.preheader.new ], [ %index.next.1, %vector.body ]
  %42 = add i64 %11, %index
  %43 = getelementptr inbounds double, double* %8, i64 %42
  %44 = bitcast double* %43 to <2 x i64>*
  store <2 x i64> %34, <2 x i64>* %44, align 8
  %45 = getelementptr double, double* %43, i64 2
  %46 = bitcast double* %45 to <2 x i64>*
  store <2 x i64> %36, <2 x i64>* %46, align 8
  %index.next = add i64 %index, 4
  %47 = add i64 %11, %index.next
  %48 = getelementptr inbounds double, double* %8, i64 %47
  %49 = bitcast double* %48 to <2 x i64>*
  store <2 x i64> %39, <2 x i64>* %49, align 8
  %50 = getelementptr double, double* %48, i64 2
  %51 = bitcast double* %50 to <2 x i64>*
  store <2 x i64> %41, <2 x i64>* %51, align 8
  %index.next.1 = add i64 %index, 8
  %52 = icmp eq i64 %index.next.1, %n.vec
  br i1 %52, label %middle.block.unr-lcssa, label %vector.body

middle.block.unr-lcssa:                           ; preds = %vector.body
  br label %middle.block

middle.block:                                     ; preds = %vector.body.prol.loopexit, %middle.block.unr-lcssa
  %cmp.n = icmp eq i64 %15, %n.vec
  br i1 %cmp.n, label %for.cond1.for.inc3_crit_edge, label %for.body2.preheader21

for.body2.preheader21:                            ; preds = %middle.block, %vector.memcheck, %min.iters.checked, %for.body2.preheader
  %indvars.iv.ph = phi i64 [ %11, %vector.memcheck ], [ %11, %min.iters.checked ], [ %11, %for.body2.preheader ], [ %ind.end, %middle.block ]
  br label %for.body2

for.body2:                                        ; preds = %for.body2.preheader21, %for.body2
  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body2 ], [ %indvars.iv.ph, %for.body2.preheader21 ]
  %53 = load i64, i64* bitcast (double* @x0 to i64*), align 8
  %arrayidx = getelementptr inbounds double, double* %8, i64 %indvars.iv
  %54 = bitcast double* %arrayidx to i64*
  store i64 %53, i64* %54, align 8
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %cmp = icmp slt i64 %indvars.iv, -1
  br i1 %cmp, label %for.body2, label %for.cond1.for.inc3_crit_edge.loopexit

for.cond1.for.inc3_crit_edge.loopexit:            ; preds = %for.body2
  br label %for.cond1.for.inc3_crit_edge

for.cond1.for.inc3_crit_edge:                     ; preds = %for.cond1.for.inc3_crit_edge.loopexit, %middle.block
  %indvars.iv.next.lcssa = phi i64 [ %ind.end, %middle.block ], [ %indvars.iv.next, %for.cond1.for.inc3_crit_edge.loopexit ]
  %55 = trunc i64 %indvars.iv.next.lcssa to i32
  store i32 %55, i32* @x2, align 4
  br label %for.inc3

for.inc3:                                         ; preds = %for.cond1.for.inc3_crit_edge, %for.cond1thread-pre-split
  %.pr611 = phi i32 [ %55, %for.cond1.for.inc3_crit_edge ], [ %.pr6, %for.cond1thread-pre-split ]
  %inc4 = add nsw i32 %9, 1
  %add.ptr = getelementptr inbounds double, double* %8, i64 %idx.ext13
  %tobool = icmp eq i32 %inc4, 0
  %indvar.next = add i64 %indvar, 1
  br i1 %tobool, label %for.cond.for.end5_crit_edge, label %for.cond1thread-pre-split

for.cond.for.end5_crit_edge:                      ; preds = %for.inc3
  store i8* %uglygep, i8** bitcast (double** @x5 to i8**), align 8
  store i32 0, i32* @x3, align 4
  br label %for.end5

for.end5:                                         ; preds = %for.cond.for.end5_crit_edge, %entry
  ret void
}