[llvm-commits] [llvm] r40628 - in /llvm/trunk: lib/Target/X86/X86InstrFPStack.td lib/Target/X86/X86InstrFormats.td lib/Target/X86/X86InstrInfo.td lib/Target/X86/X86InstrMMX.td lib/Target/X86/X86InstrSSE.td lib/Target/X86/X86InstrX86-64.td test/CodeGen/X86/2007-07-31-VInsertBug.ll

[Chris Lattner]

Evan, ping?

-Chris

On Aug 1, 2007, at 5:47 PM, Chris Lattner wrote:

> On Jul 31, 2007, at 1:04 AM, Evan Cheng wrote:
>> Author: evancheng
>> Date: Tue Jul 31 03:04:03 2007
>> New Revision: 40628
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=40628&view=rev
>> Log:
>> Redo and generalize previously removed opt for pinsrw: (vextract
>> (v4i32 bc (v4f32 s2v (f32 load ))), 0) -> (i32 load )
>
>
>> +
>> +// (vextract (v4i32 bc (v4f32 s2v (f32 load $addr))), 0) -> (i32
>> load $addr)
>> +def : Pat<(vector_extract
>> +           (bc_v4i32 (v4f32 (scalar_to_vector (loadf32 addr:
>> $src)))), (iPTR 0)),
>> +          (MOV32rm addr:$src)>;
>> +def : Pat<(vector_extract
>> +           (bc_v2i64 (v2f64 (scalar_to_vector (loadf64 addr:
>> $src)))), (iPTR 0)),
>> +          (MOV64rm addr:$src)>;
>
> Would it be possible (and would it make sense) to do this in the dag
> combiner rather than as a target-specific pattern?
>
> -Chris
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