digitalmars.D.bugs - [Issue 15873] New: In order to implement std.simd, compile time info
- via Digitalmars-d-bugs (29/29) Apr 04 2016 https://issues.dlang.org/show_bug.cgi?id=15873
https://issues.dlang.org/show_bug.cgi?id=15873 Issue ID: 15873 Summary: In order to implement std.simd, compile time info about CPU specifics is needed Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: blocker Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: jack jackstouffer.com To quote Manu, "I still have no way to detect what simd version was supplied to the compiler on the command line on GCC/Clang, and DMD has no such concept. The library can't emit opcodes that violate the simd level request made to the compiler; I need to know the level requested and then I can produce the best code for that level using static if." This also is blocking std.blas, to quote Ilya, "I am working on BLAS from scratch implementation. And it is no hope to create something useable without CT information about target. Target cpu configuration: - CPU architecture (done) - Count of FP/Integer registers - Allowed sets of instructions: for example, AVX2, FMA4 - Compiler optimization options (for math)" --
Apr 04 2016