[clang] Partially revert d8cd780.

The C11 atomics part was wrong.
llvm · Oct 29, 2021 · 95e6e1c · 95e6e1c
1 parent fc1b24d
commit 95e6e1c
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diff --git a/clang/lib/Basic/Targets/OSTargets.h b/clang/lib/Basic/Targets/OSTargets.h
@@ -464,10 +464,8 @@ class LLVM_LIBRARY_VISIBILITY OpenBSDTargetInfo : public OSTargetInfo<Target> {
  if (this->HasFloat128)
  Builder.defineMacro("__FLOAT128__");
 
- if (Opts.C11) {
- Builder.defineMacro("__STDC_NO_ATOMICS__");
+ if (Opts.C11)
  Builder.defineMacro("__STDC_NO_THREADS__");
- }
  }
 
 public:

diff --git a/clang/test/Preprocessor/init.c b/clang/test/Preprocessor/init.c
@@ -1467,11 +1467,9 @@
 // RUN: %clang_cc1 -x c -std=c11 -E -dM -ffreestanding -triple=amd64-unknown-openbsd < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD-STDC %s
 // RUN: %clang_cc1 -x c -std=gnu11 -E -dM -ffreestanding -triple=amd64-unknown-openbsd < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD-STDC %s
 // RUN: %clang_cc1 -x c -std=c17 -E -dM -ffreestanding -triple=amd64-unknown-openbsd < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD-STDC %s
-// OPENBSD-STDC:#define __STDC_NO_ATOMICS__ 1
 // OPENBSD-STDC:#define __STDC_NO_THREADS__ 1
 //
 // RUN: %clang_cc1 -x c -std=c99 -E -dM -ffreestanding -triple=amd64-unknown-openbsd < /dev/null | FileCheck -match-full-lines -check-prefix OPENBSD-STDC-N %s
-// OPENBSD-STDC-N-NOT:#define __STDC_NO_ATOMICS__ 1
 // OPENBSD-STDC-N-NOT:#define __STDC_NO_THREADS__ 1
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=xcore-none-none < /dev/null | FileCheck -match-full-lines -check-prefix XCORE %s