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| author | Evan Cheng <evan.cheng@apple.com> | 2006-05-03 20:32:03 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2006-05-03 20:32:03 +0000 |
| commit | 9e062ed516472c112451318980fd0e96eef94bff (patch) | |
| tree | bc39277f40900609adc933e28167276e73da664e | |
| parent | 5a032de387831b9de3a707292eade95934938da9 (diff) | |
| download | external_llvm-9e062ed516472c112451318980fd0e96eef94bff.zip external_llvm-9e062ed516472c112451318980fd0e96eef94bff.tar.gz external_llvm-9e062ed516472c112451318980fd0e96eef94bff.tar.bz2 | |
Use movsd to shuffle in the lowest two elements of a v4f32 / v4i32 vector when
movlps cannot be used (e.g. when load from m64 has multiple uses).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28089 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86InstrSSE.td | 8 | ||||
| -rw-r--r-- | test/CodeGen/X86/vec_shuffle-5.ll | 11 |
2 files changed, 19 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td index 1474881..6b79994 100644 --- a/lib/Target/X86/X86InstrSSE.td +++ b/lib/Target/X86/X86InstrSSE.td @@ -2481,6 +2481,14 @@ def : Pat<(v2i64 (vector_shuffle VR128:$src1, VR128:$src2, MOVL_shuffle_mask)), (v2i64 (MOVLPDrr VR128:$src1, VR128:$src2))>, Requires<[HasSSE2]>; +// vector_shuffle v1, v2 <4, 5, 2, 3> using MOVLPDrr (movsd) +def : Pat<(v4f32 (vector_shuffle VR128:$src1, VR128:$src2, + MOVLP_shuffle_mask)), + (v4f32 (MOVLPDrr VR128:$src1, VR128:$src2))>, Requires<[HasSSE2]>; +def : Pat<(v4i32 (vector_shuffle VR128:$src1, VR128:$src2, + MOVLP_shuffle_mask)), + (v4i32 (MOVLPDrr VR128:$src1, VR128:$src2))>, Requires<[HasSSE2]>; + // Set lowest element and zero upper elements. def : Pat<(bc_v2i64 (vector_shuffle immAllZerosV, (v2f64 (scalar_to_vector (loadf64 addr:$src))), diff --git a/test/CodeGen/X86/vec_shuffle-5.ll b/test/CodeGen/X86/vec_shuffle-5.ll new file mode 100644 index 0000000..ac9c667 --- /dev/null +++ b/test/CodeGen/X86/vec_shuffle-5.ll @@ -0,0 +1,11 @@ +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep movsd | wc -l | grep 1 + +void %test() { + %tmp1 = load <4 x float>* null + %tmp2 = shufflevector <4 x float> %tmp1, <4 x float> < float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00 >, <4 x uint> < uint 0, uint 1, uint 6, uint 7 > + %tmp3 = shufflevector <4 x float> %tmp1, <4 x float> zeroinitializer, <4 x uint> < uint 2, uint 3, uint 6, uint 7 > + %tmp4 = add <4 x float> %tmp2, %tmp3 + store <4 x float> %tmp4, <4 x float>* null + ret void +} + |