; RUN: opt -slp-vectorizer -slp-threshold=-6 -S < %s | FileCheck %s
; FIXME: The threshold is changed to keep this test case a bit smaller.
; The AArch64 cost model should not give such high costs to select statements.
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux"
; CHECK-LABEL: test_select
; CHECK: load <4 x i32>
; CHECK: load <4 x i32>
; CHECK: select <4 x i1>
define i32 @test_select(i32* noalias nocapture readonly %blk1, i32* noalias nocapture readonly %blk2, i32 %lx, i32 %h) {
entry:
%cmp.22 = icmp sgt i32 %h, 0
br i1 %cmp.22, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
%idx.ext = sext i32 %lx to i64
br label %for.body
for.body: ; preds = %for.body, %for.body.lr.ph
%s.026 = phi i32 [ 0, %for.body.lr.ph ], [ %add27, %for.body ]
%j.025 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
%p2.024 = phi i32* [ %blk2, %for.body.lr.ph ], [ %add.ptr29, %for.body ]
%p1.023 = phi i32* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %for.body ]
%0 = load i32, i32* %p1.023, align 4
%1 = load i32, i32* %p2.024, align 4
%sub = sub nsw i32 %0, %1
%cmp2 = icmp slt i32 %sub, 0
%sub3 = sub nsw i32 0, %sub
%sub3.sub = select i1 %cmp2, i32 %sub3, i32 %sub
%add = add nsw i32 %sub3.sub, %s.026
%arrayidx4 = getelementptr inbounds i32, i32* %p1.023, i64 1
%2 = load i32, i32* %arrayidx4, align 4
%arrayidx5 = getelementptr inbounds i32, i32* %p2.024, i64 1
%3 = load i32, i32* %arrayidx5, align 4
%sub6 = sub nsw i32 %2, %3
%cmp7 = icmp slt i32 %sub6, 0
%sub9 = sub nsw i32 0, %sub6
%v.1 = select i1 %cmp7, i32 %sub9, i32 %sub6
%add11 = add nsw i32 %add, %v.1
%arrayidx12 = getelementptr inbounds i32, i32* %p1.023, i64 2
%4 = load i32, i32* %arrayidx12, align 4
%arrayidx13 = getelementptr inbounds i32, i32* %p2.024, i64 2
%5 = load i32, i32* %arrayidx13, align 4
%sub14 = sub nsw i32 %4, %5
%cmp15 = icmp slt i32 %sub14, 0
%sub17 = sub nsw i32 0, %sub14
%sub17.sub14 = select i1 %cmp15, i32 %sub17, i32 %sub14
%add19 = add nsw i32 %add11, %sub17.sub14
%arrayidx20 = getelementptr inbounds i32, i32* %p1.023, i64 3
%6 = load i32, i32* %arrayidx20, align 4
%arrayidx21 = getelementptr inbounds i32, i32* %p2.024, i64 3
%7 = load i32, i32* %arrayidx21, align 4
%sub22 = sub nsw i32 %6, %7
%cmp23 = icmp slt i32 %sub22, 0
%sub25 = sub nsw i32 0, %sub22
%v.3 = select i1 %cmp23, i32 %sub25, i32 %sub22
%add27 = add nsw i32 %add19, %v.3
%add.ptr = getelementptr inbounds i32, i32* %p1.023, i64 %idx.ext
%add.ptr29 = getelementptr inbounds i32, i32* %p2.024, i64 %idx.ext
%inc = add nuw nsw i32 %j.025, 1
%exitcond = icmp eq i32 %inc, %h
br i1 %exitcond, label %for.end.loopexit, label %for.body
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%s.0.lcssa = phi i32 [ 0, %entry ], [ %add27, %for.end.loopexit ]
ret i32 %s.0.lcssa
}
;; Check whether SLP can find a reduction phi whose incoming blocks are not
;; the same as the block containing the phi.
;;
;; Came from code like,
;;
;; int s = 0;
;; for (int j = 0; j < h; j++) {
;; s += p1[0] * p2[0]
;; s += p1[1] * p2[1];
;; s += p1[2] * p2[2];
;; s += p1[3] * p2[3];
;; if (s >= lim)
;; break;
;; p1 += lx;
;; p2 += lx;
;; }
define i32 @reduction_with_br(i32* noalias nocapture readonly %blk1, i32* noalias nocapture readonly %blk2, i32 %lx, i32 %h, i32 %lim) {
; CHECK-LABEL: reduction_with_br
; CHECK: load <4 x i32>
; CHECK: load <4 x i32>
; CHECK: mul nsw <4 x i32>
entry:
%cmp.16 = icmp sgt i32 %h, 0
br i1 %cmp.16, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
%idx.ext = sext i32 %lx to i64
br label %for.body
for.body: ; preds = %for.body.lr.ph, %if.end
%s.020 = phi i32 [ 0, %for.body.lr.ph ], [ %add13, %if.end ]
%j.019 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end ]
%p2.018 = phi i32* [ %blk2, %for.body.lr.ph ], [ %add.ptr16, %if.end ]
%p1.017 = phi i32* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %if.end ]
%0 = load i32, i32* %p1.017, align 4
%1 = load i32, i32* %p2.018, align 4
%mul = mul nsw i32 %1, %0
%add = add nsw i32 %mul, %s.020
%arrayidx2 = getelementptr inbounds i32, i32* %p1.017, i64 1
%2 = load i32, i32* %arrayidx2, align 4
%arrayidx3 = getelementptr inbounds i32, i32* %p2.018, i64 1
%3 = load i32, i32* %arrayidx3, align 4
%mul4 = mul nsw i32 %3, %2
%add5 = add nsw i32 %add, %mul4
%arrayidx6 = getelementptr inbounds i32, i32* %p1.017, i64 2
%4 = load i32, i32* %arrayidx6, align 4
%arrayidx7 = getelementptr inbounds i32, i32* %p2.018, i64 2
%5 = load i32, i32* %arrayidx7, align 4
%mul8 = mul nsw i32 %5, %4
%add9 = add nsw i32 %add5, %mul8
%arrayidx10 = getelementptr inbounds i32, i32* %p1.017, i64 3
%6 = load i32, i32* %arrayidx10, align 4
%arrayidx11 = getelementptr inbounds i32, i32* %p2.018, i64 3
%7 = load i32, i32* %arrayidx11, align 4
%mul12 = mul nsw i32 %7, %6
%add13 = add nsw i32 %add9, %mul12
%cmp14 = icmp slt i32 %add13, %lim
br i1 %cmp14, label %if.end, label %for.end.loopexit
if.end: ; preds = %for.body
%add.ptr = getelementptr inbounds i32, i32* %p1.017, i64 %idx.ext
%add.ptr16 = getelementptr inbounds i32, i32* %p2.018, i64 %idx.ext
%inc = add nuw nsw i32 %j.019, 1
%cmp = icmp slt i32 %inc, %h
br i1 %cmp, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body, %if.end
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%s.1 = phi i32 [ 0, %entry ], [ %add13, %for.end.loopexit ]
ret i32 %s.1
}
; CHECK: test_unrolled_select
; CHECK: load <8 x i8>
; CHECK: load <8 x i8>
; CHECK: select <8 x i1>
define i32 @test_unrolled_select(i8* noalias nocapture readonly %blk1, i8* noalias nocapture readonly %blk2, i32 %lx, i32 %h, i32 %lim) #0 {
entry:
%cmp.43 = icmp sgt i32 %h, 0
br i1 %cmp.43, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
%idx.ext = sext i32 %lx to i64
br label %for.body
for.body: ; preds = %for.body.lr.ph, %if.end.86
%s.047 = phi i32 [ 0, %for.body.lr.ph ], [ %add82, %if.end.86 ]
%j.046 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end.86 ]
%p2.045 = phi i8* [ %blk2, %for.body.lr.ph ], [ %add.ptr88, %if.end.86 ]
%p1.044 = phi i8* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %if.end.86 ]
%0 = load i8, i8* %p1.044, align 1
%conv = zext i8 %0 to i32
%1 = load i8, i8* %p2.045, align 1
%conv2 = zext i8 %1 to i32
%sub = sub nsw i32 %conv, %conv2
%cmp3 = icmp slt i32 %sub, 0
%sub5 = sub nsw i32 0, %sub
%sub5.sub = select i1 %cmp3, i32 %sub5, i32 %sub
%add = add nsw i32 %sub5.sub, %s.047
%arrayidx6 = getelementptr inbounds i8, i8* %p1.044, i64 1
%2 = load i8, i8* %arrayidx6, align 1
%conv7 = zext i8 %2 to i32
%arrayidx8 = getelementptr inbounds i8, i8* %p2.045, i64 1
%3 = load i8, i8* %arrayidx8, align 1
%conv9 = zext i8 %3 to i32
%sub10 = sub nsw i32 %conv7, %conv9
%cmp11 = icmp slt i32 %sub10, 0
%sub14 = sub nsw i32 0, %sub10
%v.1 = select i1 %cmp11, i32 %sub14, i32 %sub10
%add16 = add nsw i32 %add, %v.1
%arrayidx17 = getelementptr inbounds i8, i8* %p1.044, i64 2
%4 = load i8, i8* %arrayidx17, align 1
%conv18 = zext i8 %4 to i32
%arrayidx19 = getelementptr inbounds i8, i8* %p2.045, i64 2
%5 = load i8, i8* %arrayidx19, align 1
%conv20 = zext i8 %5 to i32
%sub21 = sub nsw i32 %conv18, %conv20
%cmp22 = icmp slt i32 %sub21, 0
%sub25 = sub nsw i32 0, %sub21
%sub25.sub21 = select i1 %cmp22, i32 %sub25, i32 %sub21
%add27 = add nsw i32 %add16, %sub25.sub21
%arrayidx28 = getelementptr inbounds i8, i8* %p1.044, i64 3
%6 = load i8, i8* %arrayidx28, align 1
%conv29 = zext i8 %6 to i32
%arrayidx30 = getelementptr inbounds i8, i8* %p2.045, i64 3
%7 = load i8, i8* %arrayidx30, align 1
%conv31 = zext i8 %7 to i32
%sub32 = sub nsw i32 %conv29, %conv31
%cmp33 = icmp slt i32 %sub32, 0
%sub36 = sub nsw i32 0, %sub32
%v.3 = select i1 %cmp33, i32 %sub36, i32 %sub32
%add38 = add nsw i32 %add27, %v.3
%arrayidx39 = getelementptr inbounds i8, i8* %p1.044, i64 4
%8 = load i8, i8* %arrayidx39, align 1
%conv40 = zext i8 %8 to i32
%arrayidx41 = getelementptr inbounds i8, i8* %p2.045, i64 4
%9 = load i8, i8* %arrayidx41, align 1
%conv42 = zext i8 %9 to i32
%sub43 = sub nsw i32 %conv40, %conv42
%cmp44 = icmp slt i32 %sub43, 0
%sub47 = sub nsw i32 0, %sub43
%sub47.sub43 = select i1 %cmp44, i32 %sub47, i32 %sub43
%add49 = add nsw i32 %add38, %sub47.sub43
%arrayidx50 = getelementptr inbounds i8, i8* %p1.044, i64 5
%10 = load i8, i8* %arrayidx50, align 1
%conv51 = zext i8 %10 to i32
%arrayidx52 = getelementptr inbounds i8, i8* %p2.045, i64 5
%11 = load i8, i8* %arrayidx52, align 1
%conv53 = zext i8 %11 to i32
%sub54 = sub nsw i32 %conv51, %conv53
%cmp55 = icmp slt i32 %sub54, 0
%sub58 = sub nsw i32 0, %sub54
%v.5 = select i1 %cmp55, i32 %sub58, i32 %sub54
%add60 = add nsw i32 %add49, %v.5
%arrayidx61 = getelementptr inbounds i8, i8* %p1.044, i64 6
%12 = load i8, i8* %arrayidx61, align 1
%conv62 = zext i8 %12 to i32
%arrayidx63 = getelementptr inbounds i8, i8* %p2.045, i64 6
%13 = load i8, i8* %arrayidx63, align 1
%conv64 = zext i8 %13 to i32
%sub65 = sub nsw i32 %conv62, %conv64
%cmp66 = icmp slt i32 %sub65, 0
%sub69 = sub nsw i32 0, %sub65
%sub69.sub65 = select i1 %cmp66, i32 %sub69, i32 %sub65
%add71 = add nsw i32 %add60, %sub69.sub65
%arrayidx72 = getelementptr inbounds i8, i8* %p1.044, i64 7
%14 = load i8, i8* %arrayidx72, align 1
%conv73 = zext i8 %14 to i32
%arrayidx74 = getelementptr inbounds i8, i8* %p2.045, i64 7
%15 = load i8, i8* %arrayidx74, align 1
%conv75 = zext i8 %15 to i32
%sub76 = sub nsw i32 %conv73, %conv75
%cmp77 = icmp slt i32 %sub76, 0
%sub80 = sub nsw i32 0, %sub76
%v.7 = select i1 %cmp77, i32 %sub80, i32 %sub76
%add82 = add nsw i32 %add71, %v.7
%cmp83 = icmp slt i32 %add82, %lim
br i1 %cmp83, label %if.end.86, label %for.end.loopexit
if.end.86: ; preds = %for.body
%add.ptr = getelementptr inbounds i8, i8* %p1.044, i64 %idx.ext
%add.ptr88 = getelementptr inbounds i8, i8* %p2.045, i64 %idx.ext
%inc = add nuw nsw i32 %j.046, 1
%cmp = icmp slt i32 %inc, %h
br i1 %cmp, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body, %if.end.86
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%s.1 = phi i32 [ 0, %entry ], [ %add82, %for.end.loopexit ]
ret i32 %s.1
}