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Another missing X86ISD::MOVLPD pattern. rdar://10450317

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144839 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2011-11-16 22:24:44 +00:00
parent 40a86ee20f
commit 2b89498979
2 changed files with 19 additions and 0 deletions
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2
lib/Target/X86/X86InstrSSE.td
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@ -522,6 +522,8 @@ let Predicates = [HasSSE2] in {
// fold opportunity reappears.
def : Pat<(v2f64 (X86Movlpd VR128:$src1, VR128:$src2)),
(MOVSDrr VR128:$src1, (EXTRACT_SUBREG (v2f64 VR128:$src2),sub_sd))>;
def : Pat<(v2i64 (X86Movlpd VR128:$src1, VR128:$src2)),
(MOVSDrr VR128:$src1, (EXTRACT_SUBREG (v2i64 VR128:$src2),sub_sd))>;
def : Pat<(v4f32 (X86Movlps VR128:$src1, VR128:$src2)),
(MOVSDrr VR128:$src1, (EXTRACT_SUBREG (v4f32 VR128:$src2),sub_sd))>;
def : Pat<(v4i32 (X86Movlps VR128:$src1, VR128:$src2)),

17
test/CodeGen/X86/vec_shuffle-39.ll
View File

@ -67,3 +67,20 @@ bb:
%tmp7 = shufflevector <2 x double> %tmp5, <2 x double> %tmp6, <2 x i32> <i32 2, i32 1>
ret <2 x double> %tmp7
}
; rdar://10450317
define <2 x i64> @t4() nounwind readonly {
bb:
; CHECK: t4:
; CHECK: punpcklqdq %xmm0, %xmm1
; CHECK: movq (%rax), %xmm0
; CHECK: movsd %xmm1, %xmm0
%tmp0 = load i128* null, align 1
%tmp1 = load <2 x i32>* undef, align 8
%tmp2 = bitcast i128 %tmp0 to <16 x i8>
%tmp3 = bitcast <2 x i32> %tmp1 to i64
%tmp4 = insertelement <2 x i64> undef, i64 %tmp3, i32 0
%tmp5 = bitcast <16 x i8> %tmp2 to <2 x i64>
%tmp6 = shufflevector <2 x i64> %tmp4, <2 x i64> %tmp5, <2 x i32> <i32 2, i32 1>
ret <2 x i64> %tmp6
}