diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2008-12-03 19:38:05 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-12-03 19:38:05 +0000 |
| commit | 1339e72d971e7604a54d2fcaf6eae14254b8c45b (patch) | |
| tree | 1a846a79ac99c6b218e27445ebbf00f8529a7ee4 /llvm/lib | |
| parent | 434a3ca8e919a01b794eed7feb6fd9d147206cbd (diff) | |
| download | bcm5719-llvm-1339e72d971e7604a54d2fcaf6eae14254b8c45b.tar.gz bcm5719-llvm-1339e72d971e7604a54d2fcaf6eae14254b8c45b.zip | |
Use mmx (punpckldq VR64, (mmx_v_set0)) to clear high 32-bits of a VR64 register.
llvm-svn: 60499
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrMMX.td | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86InstrMMX.td b/llvm/lib/Target/X86/X86InstrMMX.td index 3bd9af5a9f4..fd708013b7c 100644 --- a/llvm/lib/Target/X86/X86InstrMMX.td +++ b/llvm/lib/Target/X86/X86InstrMMX.td @@ -587,11 +587,21 @@ let AddedComplexity = 15 in { let AddedComplexity = 20 in { def : Pat<(v8i8 (X86vzmovl (bc_v8i8 (load_mmx addr:$src)))), - (MMX_MOVZDI2PDIrm addr:$src)>; + (MMX_MOVZDI2PDIrm addr:$src)>; def : Pat<(v4i16 (X86vzmovl (bc_v4i16 (load_mmx addr:$src)))), - (MMX_MOVZDI2PDIrm addr:$src)>; + (MMX_MOVZDI2PDIrm addr:$src)>; def : Pat<(v2i32 (X86vzmovl (bc_v2i32 (load_mmx addr:$src)))), - (MMX_MOVZDI2PDIrm addr:$src)>; + (MMX_MOVZDI2PDIrm addr:$src)>; +} + +// Clear top half. +let AddedComplexity = 15 in { + def : Pat<(v8i8 (X86vzmovl VR64:$src)), + (MMX_PUNPCKLDQrr VR64:$src, (MMX_V_SET0))>; + def : Pat<(v4i16 (X86vzmovl VR64:$src)), + (MMX_PUNPCKLDQrr VR64:$src, (MMX_V_SET0))>; + def : Pat<(v2i32 (X86vzmovl VR64:$src)), + (MMX_PUNPCKLDQrr VR64:$src, (MMX_V_SET0))>; } // Scalar to v4i16 / v8i8. The source may be a GR32, but only the lower |
