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Allow BBVectorize to fuse compare instructions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159088 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel
2012-06-23 21:52:50 +00:00
parent 624a9c49d4
commit e415f96b6a
3 changed files with 37 additions and 0 deletions
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26
test/Transforms/BBVectorize/simple-sel.ll
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@@ -27,4 +27,30 @@ define double @test1(double %A1, double %A2, double %B1, double %B2, i1 %C1, i1
; CHECK: ret double %R
}
; Basic depth-3 chain with select (and vect. compare)
define double @test2(double %A1, double %A2, double %B1, double %B2) {
; CHECK: @test2
; CHECK: %X1.v.i1.1 = insertelement <2 x double> undef, double %B1, i32 0
; CHECK: %X1.v.i0.1 = insertelement <2 x double> undef, double %A1, i32 0
; CHECK: %X1.v.i1.2 = insertelement <2 x double> %X1.v.i1.1, double %B2, i32 1
; CHECK: %X1.v.i0.2 = insertelement <2 x double> %X1.v.i0.1, double %A2, i32 1
%X1 = fsub double %A1, %B1
%X2 = fsub double %A2, %B2
; CHECK: %X1 = fsub <2 x double> %X1.v.i0.2, %X1.v.i1.2
%Y1 = fmul double %X1, %A1
%Y2 = fmul double %X2, %A2
; CHECK: %Y1 = fmul <2 x double> %X1, %X1.v.i0.2
%C1 = fcmp ogt double %X1, %A1
%C2 = fcmp ogt double %X2, %A2
; CHECK: %C1 = fcmp ogt <2 x double> %X1, %X1.v.i0.2
%Z1 = select i1 %C1, double %Y1, double %B1
%Z2 = select i1 %C2, double %Y2, double %B2
; CHECK: %Z1 = select <2 x i1> %C1, <2 x double> %Y1, <2 x double> %X1.v.i1.2
%R = fmul double %Z1, %Z2
; CHECK: %Z1.v.r1 = extractelement <2 x double> %Z1, i32 0
; CHECK: %Z1.v.r2 = extractelement <2 x double> %Z1, i32 1
; CHECK: %R = fmul double %Z1.v.r1, %Z1.v.r2
ret double %R
; CHECK: ret double %R
}