tree b80f734a2019f66aa70aaafae8830ce7d35a6d6a
parent a384afc6b9db23eff12c68db480574d9d68ba722
author Sergey Ulanov <sergeyu@chromium.org> 1576180384 -0800
committer Sergey Ulanov <sergeyu@chromium.org> 1576190420 +0000

Use allocateExecutable() in LLVMReactor

LLVMReactor was using default memory mapper when creating
SectionMemoryManager. The default memory mapper calls mmap() to allocate
memory on all platforms except Windows. It doesn't specify MAP_JIT flag
that is required to create executable memory on Mac and Fuchsia. As
result the allocated memory is not executable, which leads to crashes
when trying to run the generated code. Update LLVMRector to use a custom
MemoryMapper implementation.

Bug: chromium:1032622, b/145348318
Change-Id: Id188af269d80371b709e625c29b92ff546e9ba28
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/39408
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>