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35 lines
1.2 KiB
LLVM
35 lines
1.2 KiB
LLVM
; RUN: llc < %s -march=x86-64 | grep paddw | count 2
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; RUN: llc < %s -march=x86-64 | not grep mov
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; The 2-addr pass should ensure that identical code is produced for these functions
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; no extra copy should be generated.
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define <2 x i64> @test1(<2 x i64> %x, <2 x i64> %y) nounwind {
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entry:
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%tmp6 = bitcast <2 x i64> %y to <8 x i16> ; <<8 x i16>> [#uses=1]
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%tmp8 = bitcast <2 x i64> %x to <8 x i16> ; <<8 x i16>> [#uses=1]
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%tmp9 = add <8 x i16> %tmp8, %tmp6 ; <<8 x i16>> [#uses=1]
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%tmp10 = bitcast <8 x i16> %tmp9 to <2 x i64> ; <<2 x i64>> [#uses=1]
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ret <2 x i64> %tmp10
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}
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define <2 x i64> @test2(<2 x i64> %x, <2 x i64> %y) nounwind {
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entry:
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%tmp6 = bitcast <2 x i64> %x to <8 x i16> ; <<8 x i16>> [#uses=1]
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%tmp8 = bitcast <2 x i64> %y to <8 x i16> ; <<8 x i16>> [#uses=1]
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%tmp9 = add <8 x i16> %tmp8, %tmp6 ; <<8 x i16>> [#uses=1]
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%tmp10 = bitcast <8 x i16> %tmp9 to <2 x i64> ; <<2 x i64>> [#uses=1]
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ret <2 x i64> %tmp10
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}
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; The coalescer should commute the add to avoid a copy.
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define <4 x float> @test3(<4 x float> %V) {
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entry:
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%tmp8 = shufflevector <4 x float> %V, <4 x float> undef,
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<4 x i32> < i32 3, i32 2, i32 1, i32 0 >
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%add = fadd <4 x float> %tmp8, %V
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ret <4 x float> %add
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}
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