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Hi, I'm in the process of migrating from clang5 to clang10. Unfortunately clang10 introduced a negative performance impact. The cause is an increase of PLT entries from this patch (first released in clang7): https://bugs.llvm.org/show_bug.cgi?id=36370 https://reviews.llvm.org/D43383 If I revert that clang patch locally, the additional PLT entr...

...00000000001298 <_start>: >> 1298: e8 04 00 00 00 callq 12a1 <foo+0x4> >> >> 000000000000129d <foo>: >> 129d: c3 retq >> >> >> The call to foo does not go through the PLT. That's the behavior seen using clang5. But clang10 generates the PLT32 relocation instead, like this: >> >> $ cat b.s >> .globl _start, foo >> _start: >> .byte 0xe8 >> .reloc ., R_X86_64_PLT32, foo - 4 >> .long foo - . >> foo: >> ret >> >> $ as b.s -o b.o >>...

...s Daniel for the info. Siddharth On Thu, Sep 21, 2017 at 10:37 PM, Dániel Krupp <daniel.krupp at ericsson.com> wrote: > Hi Siddharth, > > > > since the CTU functionality is not yet part of the mainline clang (review > ongoing), you will need to clone our patched version of clang5 > > https://github.com/Ericsson/clang > > (ctu-clang5 branch) > > > > please use the following llvm commit revision to compile clang: > > Branch ctu-clang5 -> LLVM commit 657c31173ea30090583e40c7a9204561d9c2d8c4 > > > > when you compiled clang successful...

Dear all, In the official document <https://llvm.org/docs/CompileCudaWithLLVM.html>, it is mentioned that CUDA compilation is supported on Windows as of 2017-01-05. I used msys2 to install clang 5.0.1. Then I installed cuda 8.0. However, I basically could not compile any code of cuda by the prescribed setting. I wounder if anyone can successfully compile cuda code by the clang on Windows.