ludiludi
Joined 4 years ago
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171
Submissions
11
Member since
Sep 7
Recent submissions
Comment · 3 years ago
Comment · 3 years ago
It appears so. https://developer.arm.com/documentation/102374/0101/Program-...
"So far, we have seen examples that use branches to handle decisions. The A64 instruction set also provides conditional select instructions. In many cases, these instructions can be used as an alternative to branches."
Seems CSEL is not a branch.
Comment · 3 years ago
Your disasm is for x86-64. The benchmarks in the blog were run on an M1 MacBook Pro, which is an ARM64.
Comment · 3 years ago
Good question. As you can see in the comment in the github repo, it has no effect. https://github.com/ludi317/max/blob/master/blog/max_test.go#...
It is there only to match the continue in the second code sample, where it is needed.
Comment · 3 years ago
Here's my visual implementation of Knuth's algorithm to solve Mastermind!
Click "Solve within 5 moves"
Gory details here: https://github.com/ludi317/ludi317.github.io
Comment · 4 years ago
> If you read the title and thought “well, you were probably just doing something silly beforehand”, you’re right!
Don't feel too silly. Russ Cox, one of the technical leads on the Go language, made the same mistake in the regexp package of the standard library.
$ nilaway ./...
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x2 addr=0x0 pc=0x100c16a58]