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76370891
2013 May 09
1
[LLVMdev] Predicated Vector Operations
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[1] http://software.intel.com/sites/products/documentation/studio/composer/en-us/2011Update/compiler_c/intref_cls/common/intref_avx_maskstore_pd.htm
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2013 May 09
0
[LLVMdev] Predicated Vector Operations
On Thu, May 9, 2013 at 1:09 AM, Nadav Rotem <nrotem at apple.com> wrote:
> On May 8, 2013, at 4:00 PM, Eric Christopher <echristo at gmail.com> wrote:
>
>
> Thinking that a masked store is conservatively a store of the full
> width of the store right?
>
>
> It depends on the optimization. Consider this example:
>
> masked_store(Val, Ptr , M)
> X =
2013 May 08
4
[LLVMdev] Predicated Vector Operations
On May 8, 2013, at 4:00 PM, Eric Christopher <echristo at gmail.com> wrote:
>
> Thinking that a masked store is conservatively a store of the full
> width of the store right?
It depends on the optimization. Consider this example:
masked_store(Val, Ptr , M)
X = masked_load(Ptr, M2)
If you assume that your store actually overwrites everything in that memory location then you