Displaying 3 results from an estimated 3 matches for "112i0".
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2013 Jul 29
0
[LLVMdev] [Polly] Analysis of the expensive compile-time overhead of Polly Dependence pass
On 07/29/2013 09:15 AM, Sven Verdoolaege wrote:
> On Mon, Jul 29, 2013 at 07:37:14AM -0700, Tobias Grosser wrote:
>> On 07/29/2013 03:18 AM, Sven Verdoolaege wrote:
>>> On Sun, Jul 28, 2013 at 04:42:25PM -0700, Tobias Grosser wrote:
>>>> Sven: In terms of making the behaviour of isl easier to understand,
>>>> it may make sense to fail/assert in case
2013 Jul 31
1
[LLVMdev] [Polly] Analysis of the expensive compile-time overhead of Polly Dependence pass
...p_2] -> { Stmt_for_body6[i0] -> MemRef_input[o0] : 2o0 = p_2 + !
16i0 }; }
Furthermore, it will produce very complex RAW, WAW and WAR dependence as follows:
RAW dependences: [p_0, p_1, p_2] -> { Stmt_for_body6[i0] -> Stmt_for_body6[o0] : (exists (e0 = [(p_1)/2], e1 = [(7p_1 + p_2 + 112i0)/16]: 16o0 = -p_0 + p_1 + 16i0 and 2e0 = p_1 and 16i0 >= -p_1 + p_2 and 16i0 <= 112 + p_0 - p_1 and p_1 >= 16 + p_0 and i0 >= 0 and 16e1 >= -15 + 7p_1 + p_2 + 112i0 and 16e1 <= -1 + 7p_1 + p_2 + 112i0 and p_2 >= 16 + p_0)) or ... or (exists (e0 = [(p_1)/2], e1 = [(-p_1 + p_2)/1...
2013 Jul 26
6
[LLVMdev] [Polly] Analysis of the expensive compile-time overhead of Polly Dependence pass
Hi Sebastian,
Recently, I found the "Polly - Calculate dependences" pass would lead to significant compile-time overhead when compiling some loop-intensive source code. Tobias told me you found similar problem as follows:
http://llvm.org/bugs/show_bug.cgi?id=14240
My evaluation shows that "Polly - Calculate dependences" pass consumes 96.4% of total compile-time overhead