Displaying 2 results from an estimated 2 matches for "d523a34e".
2020 Sep 27
2
A 4x slower initialization loop in LLVM vs GCC and MSVC
Hi everyone,
I was watching this video [1]. There's an example of an initialization loop
for which
Clang unfortunately generates really bad code [2]. In my machine, the Clang
version
is 4x slower than the GCC version. I have not tested the MSVC version, but
it should
be around the same.
In case anyone's interested, in the video [1] Casey explains why this code
is bad (around 59:39).
So,
2020 Oct 01
3
A 4x slower initialization loop in LLVM vs GCC and MSVC
...as if disabling SROA (although the code is not as nice as it code be right now, as there's no syntax for constant initializers for matrix types yet)
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