37 lines
1.5 KiB
LLVM
37 lines
1.5 KiB
LLVM
; RUN: opt < %s -slp-vectorizer -o - -S -slp-threshold=-1000
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target datalayout = "e-p:32:32-i64:64-v16:16-v32:32-n16:32:64"
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target triple = "nvptx--nvidiacl"
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; CTLZ cannot be vectorized currently because the second argument is a scalar
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; for both the scalar and vector forms of the intrinsic. In the future it
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; should be possible to vectorize such functions.
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; Test causes an assert if LLVM tries to vectorize CTLZ.
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define <2 x i8> @cltz_test(<2 x i8> %x) #0 {
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entry:
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%0 = extractelement <2 x i8> %x, i32 0
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%call.i = call i8 @llvm.ctlz.i8(i8 %0, i1 false)
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%vecinit = insertelement <2 x i8> undef, i8 %call.i, i32 0
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%1 = extractelement <2 x i8> %x, i32 1
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%call.i4 = call i8 @llvm.ctlz.i8(i8 %1, i1 false)
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%vecinit2 = insertelement <2 x i8> %vecinit, i8 %call.i4, i32 1
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ret <2 x i8> %vecinit2
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}
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define <2 x i8> @cltz_test2(<2 x i8> %x) #1 {
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entry:
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%0 = extractelement <2 x i8> %x, i32 0
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%1 = extractelement <2 x i8> %x, i32 1
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%call.i = call i8 @llvm.ctlz.i8(i8 %0, i1 false)
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%call.i4 = call i8 @llvm.ctlz.i8(i8 %1, i1 false)
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%vecinit = insertelement <2 x i8> undef, i8 %call.i, i32 0
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%vecinit2 = insertelement <2 x i8> %vecinit, i8 %call.i4, i32 1
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ret <2 x i8> %vecinit2
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}
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declare i8 @llvm.ctlz.i8(i8, i1) #3
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attributes #0 = { alwaysinline nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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