[PATCH] D126984: [clang] Add initial support for gcc's optimize function attribute

[Stephen Long via Phabricator via cfe-commits]

steplong created this revision.
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At the moment, it only supports a string argument that refers to
the optimization level. "-f" arguments aren't supported. The argument
must begin with "O" or "-O". Also, only non-negative optimization levels
and "-Os" are accepted.

Only "-Os" and "-O0" currently affect codegen.

i.e. __attribute__((optimize("O0")))


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D126984

Files:
  clang/include/clang/Basic/Attr.td
  clang/include/clang/Basic/DiagnosticSemaKinds.td
  clang/lib/CodeGen/CGCall.cpp
  clang/lib/CodeGen/CodeGenModule.cpp
  clang/lib/CodeGen/CodeGenModule.h
  clang/lib/Sema/SemaDeclAttr.cpp
  clang/test/CodeGen/attr-optimize.c
  clang/test/Sema/attr-optimize.c

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