tree c96ca9a70a82520d42f76f06eee4e283352ec0d8
parent 89c498edff683c68df6be0dd224848f4b4af5ae7
author Nicolas Capens <capn@google.com> 1650652856 -0400
committer Nicolas Capens <nicolascapens@google.com> 1650986910 +0000

Implement ScopedPragma

This change adds a ScopedPragma class which sets a pragma state and
reverts it to its old state on destruction.

For now only Boolean pragmas are supported (which in turn only has one
MemorySanitizerInstrumentation option). But since this is meant to
replace rr::Config, the implementation is based around an std::variant<>
to easily support additional settings.

PragmaBooleanOption was renamed to BooleanPragmaOption for easier
reading.

Bug: b/192879676
Change-Id: I63b9553b794b593f1bc3659e89fe3fcf3e266826
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/65248
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>