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f6cadaaf06
This is the same as the other tests: Clever tricks are required to make the arguments and return value line up in a single-instruction function. It rarely happens in real life. We have plenty other examples of this behavior. llvm-svn: 157030
29 lines
1.0 KiB
LLVM
29 lines
1.0 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-linux -mcpu=nehalem | FileCheck %s
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; CHECK-NOT: mov
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; CHECK: paddw
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; CHECK-NOT: mov
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; CHECK: paddw
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; CHECK-NOT: paddw
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; CHECK-NOT: 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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