options

exec - 2023-09-06 20:59:48 - MAQAO 2.17.8

Help is available by moving the cursor above any symbol or by checking MAQAO website.

Optimizer

Loop IDModuleAnalysisPenalty ScoreCoverage (%)Vectorization
Ratio (%)
Vector Length
Use (%)
4execInefficient vectorization.14399.4210092.05
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 32 issues (= instructions) costing 4 points each.128
[SA] Inefficient vectorization: more than 10% of the vector loads instructions are unaligned - When allocating arrays, don’t forget to align them. There are 4 issues ( = arrays) costing 2 points each8
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT) - Simplify data access and try to get stride 1 access. There are 3 issues (= instructions) costing 1 point each.3
[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
[SA] Inefficient vectorization: use of shorter than available vector length - Force compiler to use proper vector length. CAUTION: use of 512 bits vectors could be more expensive than 256 bits on some processors. Use intrinsics (costly and not portable). The issue costs 2 points.2
3execPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.10000.116.458.47
[SA] Too many paths (at least 1000 paths) - Simplify control structure. There are at least 1000 issues ( = paths) costing 1 point.1000
Warning! Some static analysis are missing because the loop has too many paths. Use a higher value for --maximal_path_number option.0
2execPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.10010.0606.61
[SA] Too many paths (at least 1000 paths) - Simplify control structure. There are at least 1000 issues ( = paths) costing 1 point.1000
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
Warning! Some static analysis are missing because the loop has too many paths. Use a higher value for --maximal_path_number option.0
0execPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.320.0606.25
[SA] Presence of constant non unit stride data access - Use array restructuring, perform loop interchange or use gather instructions to lower a bit the cost. There are 16 issues ( = data accesses) costing 2 point each.32
×