diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2008-05-08 00:57:18 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-05-08 00:57:18 +0000 |
| commit | 7e2ff77ef05c23db6b9c82bc7a4110e170d7f94c (patch) | |
| tree | 64720b94bfac0d0b7c77ad7005c71036d40b1d6b /lib/Target/X86/X86InstrMMX.td | |
| parent | 687bcb2be07f675914e3a452fcc624bed8f53351 (diff) | |
| download | llvm-7e2ff77ef05c23db6b9c82bc7a4110e170d7f94c.tar.gz llvm-7e2ff77ef05c23db6b9c82bc7a4110e170d7f94c.tar.bz2 llvm-7e2ff77ef05c23db6b9c82bc7a4110e170d7f94c.tar.xz | |
Handle vector move / load which zero the destination register top bits (i.e. movd, movq, movss (addr), movsd (addr)) with X86 specific dag combine.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50838 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrMMX.td')
| -rw-r--r-- | lib/Target/X86/X86InstrMMX.td | 26 |
1 files changed, 9 insertions, 17 deletions
diff --git a/lib/Target/X86/X86InstrMMX.td b/lib/Target/X86/X86InstrMMX.td index d484695f60..3c1fc750a1 100644 --- a/lib/Target/X86/X86InstrMMX.td +++ b/lib/Target/X86/X86InstrMMX.td @@ -200,18 +200,14 @@ let AddedComplexity = 15 in // movd to MMX register zero-extends def MMX_MOVZDI2PDIrr : MMXI<0x6E, MRMSrcReg, (outs VR64:$dst), (ins GR32:$src), "movd\t{$src, $dst|$dst, $src}", - [(set VR64:$dst, - (v2i32 (vector_shuffle immAllZerosV, - (v2i32 (scalar_to_vector GR32:$src)), - MMX_MOVL_shuffle_mask)))]>; + [(set VR64:$dst, + (v2i32 (X86zvmovl (v2i32 (scalar_to_vector GR32:$src)))))]>; let AddedComplexity = 20 in def MMX_MOVZDI2PDIrm : MMXI<0x6E, MRMSrcMem, (outs VR64:$dst), (ins i32mem:$src), "movd\t{$src, $dst|$dst, $src}", - [(set VR64:$dst, - (v2i32 (vector_shuffle immAllZerosV, - (v2i32 (scalar_to_vector - (loadi32 addr:$src))), - MMX_MOVL_shuffle_mask)))]>; + [(set VR64:$dst, + (v2i32 (X86zvmovl (v2i32 + (scalar_to_vector (loadi32 addr:$src))))))]>; // Arithmetic Instructions @@ -564,14 +560,10 @@ def : Pat<(i64 (bitconvert (v8i8 VR64:$src))), // Move scalar to XMM zero-extended // movd to XMM register zero-extends let AddedComplexity = 15 in { - def : Pat<(v8i8 (vector_shuffle immAllZerosV_bc, - (bc_v8i8 (v2i32 (scalar_to_vector GR32:$src))), - MMX_MOVL_shuffle_mask)), - (MMX_MOVZDI2PDIrr GR32:$src)>; - def : Pat<(v4i16 (vector_shuffle immAllZerosV_bc, - (bc_v4i16 (v2i32 (scalar_to_vector GR32:$src))), - MMX_MOVL_shuffle_mask)), - (MMX_MOVZDI2PDIrr GR32:$src)>; + def : Pat<(v8i8 (X86zvmovl (bc_v8i8 (v2i32 (scalar_to_vector GR32:$src))))), + (MMX_MOVZDI2PDIrr GR32:$src)>; + def : Pat<(v4i16 (X86zvmovl (bc_v8i8 (v2i32 (scalar_to_vector GR32:$src))))), + (MMX_MOVZDI2PDIrr GR32:$src)>; } // Scalar to v4i16 / v8i8. The source may be a GR32, but only the lower |