[Patch] [AArch64] Implement getMaximumUnrollFactor()

[Jiangning Liu]

Hi Zhaoshi,

+;CHECK-LABEL: array_add
+;CHECK: load <4 x i32>
+;CHECK: load <4 x i32>
+;CHECK: load <4 x i32>
+;CHECK: load <4 x i32>
+;CHECK: add nsw <4 x i32>
+;CHECK: add nsw <4 x i32>
+;CHECK: store <4 x i32>
+;CHECK: store <4 x i32>
+;CHECK: ret

Since we don't really have out-of-order CHECK, this CHECK ordering could
fail after loop unrolling in theory, right? Maybe simply checking there are
only two stores like below is enough?

;CHECK: store <4 x i32>
;CHECK: store <4 x i32>
;CHECK-NOT: store

Thanks,
-Jiangning



2014-04-08 9:26 GMT+08:00 <zhaoshiz at codeaurora.org>:

> Hello,
>
> This patch allows vectorized loops to be unrolled by a factor of 2 on
> AArch64. Please help review
>
> Thanks,
> Zhaoshi
> _______________________________________________
> llvm-commits mailing list
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>
>


-- 
Thanks,
-Jiangning
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