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Add a pattern to do move the low element of a v4f32 and zero extend the rest.

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llvm-svn: 50922
This commit is contained in:
Evan Cheng 2008-05-09 23:37:55 +00:00
parent a422bcbec2
commit 2adea48f7e
2 changed files with 11 additions and 0 deletions
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2
lib/Target/X86/X86InstrSSE.td
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@ -2768,6 +2768,8 @@ def : Pat<(v2f64 (X86vzmovl (v2f64 (scalar_to_vector FR64:$src)))),
(MOVLSD2PDrr (V_SET0), FR64:$src)>, Requires<[HasSSE2]>;
def : Pat<(v4f32 (X86vzmovl (v4f32 (scalar_to_vector FR32:$src)))),
(MOVLSS2PSrr (V_SET0), FR32:$src)>, Requires<[HasSSE2]>;
def : Pat<(v4f32 (X86vzmovl (v4f32 VR128:$src))),
(MOVLPSrr (V_SET0), VR128:$src)>, Requires<[HasSSE2]>;
}
// Splat v2f64 / v2i64

9
test/CodeGen/X86/vec_set-G.ll Normal file
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@ -0,0 +1,9 @@
; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep movss
define fastcc void @t(<4 x float> %A) nounwind {
%tmp41896 = extractelement <4 x float> %A, i32 0 ; <float> [#uses=1]
%tmp14082 = insertelement <4 x float> < float 0.000000e+00, float undef, float undef, float undef >, float %tmp41896, i32 1 ; <<4 x float>> [#uses=1]
%tmp14083 = insertelement <4 x float> %tmp14082, float 0.000000e+00, i32 2 ; <<4 x float>> [#uses=1]
store <4 x float> %tmp14083, <4 x float>* null, align 16
ret void
}