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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
; RUN: opt < %s -bb-vectorize -bb-vectorize-req-chain-depth=3 -instcombine -gvn -S | FileCheck %s
; This test checks the non-trivial pairing-induced cycle avoidance. Without this cycle avoidance, the algorithm would otherwise
; want to select the pairs:
; %div77 = fdiv double %sub74, %mul76.v.r1 <-> %div125 = fdiv double %mul121, %mul76.v.r2 (div125 depends on mul117)
; %add84 = fadd double %sub83, 2.000000e+00 <-> %add127 = fadd double %mul126, 1.000000e+00 (add127 depends on div77)
; %mul95 = fmul double %sub45.v.r1, %sub36.v.r1 <-> %mul88 = fmul double %sub36.v.r1, %sub87 (mul88 depends on add84)
; %mul117 = fmul double %sub39.v.r1, %sub116 <-> %mul97 = fmul double %mul96, %sub39.v.r1 (mul97 depends on mul95)
; and so a dependency cycle would be created.
declare double @fabs(double) nounwind readnone
define void @test1(double %a, double %b, double %c, double %add80, double %mul1, double %mul2.v.r1, double %mul73, double %sub, double %sub65, double %F.0, i32 %n.0, double %Bnm3.0, double %Bnm2.0, double %Bnm1.0, double %Anm3.0, double %Anm2.0, double %Anm1.0) {
entry:
br label %go
go:
%conv = sitofp i32 %n.0 to double
%add35 = fadd double %conv, %a
%sub36 = fadd double %add35, -1.000000e+00
%add38 = fadd double %conv, %b
%sub39 = fadd double %add38, -1.000000e+00
%add41 = fadd double %conv, %c
%sub42 = fadd double %add41, -1.000000e+00
%sub45 = fadd double %add35, -2.000000e+00
%sub48 = fadd double %add38, -2.000000e+00
%sub51 = fadd double %add41, -2.000000e+00
%mul52 = shl nsw i32 %n.0, 1
%sub53 = add nsw i32 %mul52, -1
%conv54 = sitofp i32 %sub53 to double
%sub56 = add nsw i32 %mul52, -3
%conv57 = sitofp i32 %sub56 to double
%sub59 = add nsw i32 %mul52, -5
%conv60 = sitofp i32 %sub59 to double
%mul61 = mul nsw i32 %n.0, %n.0
%conv62 = sitofp i32 %mul61 to double
%mul63 = fmul double %conv62, 3.000000e+00
%mul67 = fmul double %sub65, %conv
%add68 = fadd double %mul63, %mul67
%add69 = fadd double %add68, 2.000000e+00
%sub71 = fsub double %add69, %mul2.v.r1
%sub74 = fsub double %sub71, %mul73
%mul75 = fmul double %conv57, 2.000000e+00
%mul76 = fmul double %mul75, %sub42
%div77 = fdiv double %sub74, %mul76
%mul82 = fmul double %add80, %conv
%sub83 = fsub double %mul63, %mul82
%add84 = fadd double %sub83, 2.000000e+00
%sub86 = fsub double %add84, %mul2.v.r1
%sub87 = fsub double -0.000000e+00, %sub86
%mul88 = fmul double %sub36, %sub87
%mul89 = fmul double %mul88, %sub39
%mul90 = fmul double %conv54, 4.000000e+00
%mul91 = fmul double %mul90, %conv57
%mul92 = fmul double %mul91, %sub51
%mul93 = fmul double %mul92, %sub42
%div94 = fdiv double %mul89, %mul93
%mul95 = fmul double %sub45, %sub36
%mul96 = fmul double %mul95, %sub48
%mul97 = fmul double %mul96, %sub39
%sub99 = fsub double %conv, %a
%sub100 = fadd double %sub99, -2.000000e+00
%mul101 = fmul double %mul97, %sub100
%sub103 = fsub double %conv, %b
%sub104 = fadd double %sub103, -2.000000e+00
%mul105 = fmul double %mul101, %sub104
%mul106 = fmul double %conv57, 8.000000e+00
%mul107 = fmul double %mul106, %conv57
%mul108 = fmul double %mul107, %conv60
%sub111 = fadd double %add41, -3.000000e+00
%mul112 = fmul double %mul108, %sub111
%mul113 = fmul double %mul112, %sub51
%mul114 = fmul double %mul113, %sub42
%div115 = fdiv double %mul105, %mul114
%sub116 = fsub double -0.000000e+00, %sub36
%mul117 = fmul double %sub39, %sub116
%sub119 = fsub double %conv, %c
%sub120 = fadd double %sub119, -1.000000e+00
%mul121 = fmul double %mul117, %sub120
%mul123 = fmul double %mul75, %sub51
%mul124 = fmul double %mul123, %sub42
%div125 = fdiv double %mul121, %mul124
%mul126 = fmul double %div77, %sub
%add127 = fadd double %mul126, 1.000000e+00
%mul128 = fmul double %add127, %Anm1.0
%mul129 = fmul double %div94, %sub
%add130 = fadd double %div125, %mul129
%mul131 = fmul double %add130, %sub
%mul132 = fmul double %mul131, %Anm2.0
%add133 = fadd double %mul128, %mul132
%mul134 = fmul double %div115, %mul1
%mul135 = fmul double %mul134, %Anm3.0
%add136 = fadd double %add133, %mul135
%mul139 = fmul double %add127, %Bnm1.0
%mul143 = fmul double %mul131, %Bnm2.0
%add144 = fadd double %mul139, %mul143
%mul146 = fmul double %mul134, %Bnm3.0
%add147 = fadd double %add144, %mul146
%div148 = fdiv double %add136, %add147
%sub149 = fsub double %F.0, %div148
%div150 = fdiv double %sub149, %F.0
%call = tail call double @fabs(double %div150) nounwind readnone
%cmp = fcmp olt double %call, 0x3CB0000000000000
%cmp152 = icmp sgt i32 %n.0, 20000
%or.cond = or i1 %cmp, %cmp152
br i1 %or.cond, label %done, label %go
done:
ret void
; CHECK: @test1
; CHECK: go:
; CHECK: %conv.v.i0.1 = insertelement <2 x i32> undef, i32 %n.0, i32 0
; FIXME: When tree pruning is deterministic, include the entire output.
}
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