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Update ShiftAnalysis authored by Chris Cox's avatar Chris Cox
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ShiftAnalysis.md
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A common operation, that should be well recognized and optimized... or so you would imagine. A common operation, that should be well recognized and optimized... or so you would imagine.
* [MacOS/LLVM results](https://gitlab.com/chriscox/CppPerformanceBenchmarks/wikis/ShiftAnalysis#macosllvm)
* [Windows/MSVC results](https://gitlab.com/chriscox/CppPerformanceBenchmarks/wikis/ShiftAnalysis#windowsmsvc)
* [Ubuntu/gccc results](https://gitlab.com/chriscox/CppPerformanceBenchmarks/wikis/ShiftAnalysis#linuxgcc)
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## MacOS/LLVM ## MacOS/LLVM
``` ```
...@@ -611,4 +616,4 @@ number time per second test0 ...@@ -611,4 +616,4 @@ number time per second test0
6 "uint64_t variable mask high" 49.25 sec 974.53 M 2.42 6 "uint64_t variable mask high" 49.25 sec 974.53 M 2.42
7 "uint64_t variable mask high by shift" 49.34 sec 972.80 M 2.42 7 "uint64_t variable mask high by shift" 49.34 sec 972.80 M 2.42
``` ```
* Again incredibly slow and difficult to tell if anything is being optimized. * Again incredibly slow and difficult to tell if anything is being optimized.
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