Displaying 3 results from an estimated 3 matches for "_unpack".
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2011 Oct 26
0
[LLVMdev] Lowering to MMX
...s for MMX)?
I don't think it's a missing pattern. I think it's the backend trying to use the best instructions available. I get this if I turn off SSE:
[Irk:llvm] llc -o - t.ll -mattr=-sse,+mmx -O3 -x86-asm-syntax=intel
.section __TEXT,__text,regular,pure_instructions
.align 4, 0x90
_unpack: ## @unpack
Ltmp0:
.cfi_startproc
## BB#0:
mov ECX, DWORD PTR [RSI]
shl RAX, 32
or RAX, RCX
movd MM0, RAX
punpcklbw MM0, MM0
movq QWORD PTR [RDI], MM0
ret
Ltmp1:
.cfi_endproc
Leh_func_end0:
I don't know if this will work for you at all. Of course, one ot...
2011 Oct 26
2
[LLVMdev] Lowering to MMX
Hi Bill,
Comments inline:
On 24/10/2011 9:50 PM, Bill Wendling wrote:
> On Oct 20, 2011, at 8:42 AM, Nicolas Capens wrote:
>
>> Hi all,
>>
>> I'm working on a graphics project which uses LLVM for dynamic code
>> generation, and I noticed a major performance regression when upgrading
>> from LLVM 2.8 to 3.0-rc1 (LLVM 2.9 didn't support Win64 so I
2001 Jun 28
4
Java wrapper?
Hi,
a few months ago it has already been discussed, but without final
solution it seems...
Is there anybody who is working on a Java JNI wrapper for libvorbis
etc.?
Greetings
k.j.
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