47 lines
2.1 KiB
LLVM
47 lines
2.1 KiB
LLVM
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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"
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; RUN: opt < %s -bb-vectorize -bb-vectorize-req-chain-depth=3 -instcombine -gvn -S | FileCheck %s
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; RUN: opt < %s -bb-vectorize -bb-vectorize-req-chain-depth=3 -bb-vectorize-search-limit=4 -instcombine -gvn -S | FileCheck %s -check-prefix=CHECK-SL4
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define double @test1(double %A1, double %A2, double %B1, double %B2) {
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; CHECK: @test1
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; CHECK-SL4: @test1
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; CHECK-SL4-NOT: <2 x double>
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; CHECK: %X1.v.i1.1 = insertelement <2 x double> undef, double %B1, i32 0
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; CHECK: %X1.v.i0.1 = insertelement <2 x double> undef, double %A1, i32 0
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; CHECK: %X1.v.i1.2 = insertelement <2 x double> %X1.v.i1.1, double %B2, i32 1
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; CHECK: %X1.v.i0.2 = insertelement <2 x double> %X1.v.i0.1, double %A2, i32 1
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%X1 = fsub double %A1, %B1
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%X2 = fsub double %A2, %B2
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; CHECK: %X1 = fsub <2 x double> %X1.v.i0.2, %X1.v.i1.2
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%Y1 = fmul double %X1, %A1
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%Y2 = fmul double %X2, %A2
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; CHECK: %Y1 = fmul <2 x double> %X1, %X1.v.i0.2
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%Z1 = fadd double %Y1, %B1
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; Here we have a dependency chain: the short search limit will not
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; see past this chain and so will not see the second part of the
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; pair to vectorize.
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%mul41 = fmul double %Z1, %Y2
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%sub48 = fsub double %Z1, %mul41
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%mul62 = fmul double %Z1, %sub48
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%sub69 = fsub double %Z1, %mul62
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%mul83 = fmul double %Z1, %sub69
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%sub90 = fsub double %Z1, %mul83
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%mul104 = fmul double %Z1, %sub90
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%sub111 = fsub double %Z1, %mul104
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%mul125 = fmul double %Z1, %sub111
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%sub132 = fsub double %Z1, %mul125
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%mul146 = fmul double %Z1, %sub132
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%sub153 = fsub double %Z1, %mul146
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; end of chain.
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%Z2 = fadd double %Y2, %B2
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; CHECK: %Z1 = fadd <2 x double> %Y1, %X1.v.i1.2
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%R1 = fdiv double %Z1, %Z2
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%R = fmul double %R1, %sub153
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; CHECK: %Z1.v.r1 = extractelement <2 x double> %Z1, i32 0
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; CHECK: %Z1.v.r2 = extractelement <2 x double> %Z1, i32 1
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; CHECK: %R1 = fdiv double %Z1.v.r1, %Z1.v.r2
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ret double %R
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; CHECK: ret double %R
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}
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