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@zibi2 zibi2 commented Sep 23, 2024

This will fix the following failure seeing on z/OS:

In file included from clang/test/CodeGen/PowerPC/ppc-xmmintrin.c:31:
In file included from build/lib/clang/20/include/ppc_wrappers/xmmintrin.h:44:
In file included from build/lib/clang/20/include/altivec.h:48:
In file included from build/bin/../include/c++/v1/stddef.h:27:
In file included from build/bin/../include/c++/v1/__config:14:
In file included from build/bin/../include/c++/v1/__configuration/abi.h:15:
In file included from build/bin/../include/c++/v1/__configuration/platform.h:35:
/usr/include/features.h:1:20: error: expected unqualified-id
    1 |                    ??=if                       ??/
      |                    ^
/usr/include/features.h:2140:20: error: expected unqualified-id
 2140 |                    ??=endif /* __features_h */
      |                    ^

Adding -nostdlibinc will not use standard system include path and it will prevent above errors.

@zibi2 zibi2 requested review from abhina-sree and nikic September 23, 2024 15:26
@zibi2 zibi2 self-assigned this Sep 23, 2024
@llvmbot llvmbot added clang Clang issues not falling into any other category backend:PowerPC labels Sep 23, 2024
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llvmbot commented Sep 23, 2024

@llvm/pr-subscribers-backend-powerpc

@llvm/pr-subscribers-clang

Author: Zibi Sarbinowski (zibi2)

Changes

This will fix the following failure seeing on z/OS:

In file included from clang/test/CodeGen/PowerPC/ppc-xmmintrin.c:31:
In file included from build/lib/clang/20/include/ppc_wrappers/xmmintrin.h:44:
In file included from build/lib/clang/20/include/altivec.h:48:
In file included from build/bin/../include/c++/v1/stddef.h:27:
In file included from build/bin/../include/c++/v1/__config:14:
In file included from build/bin/../include/c++/v1/__configuration/abi.h:15:
In file included from build/bin/../include/c++/v1/__configuration/platform.h:35:
/usr/include/features.h:1:20: error: expected unqualified-id
    1 |                    ??=if                       ??/
      |                    ^
/usr/include/features.h:2140:20: error: expected unqualified-id
 2140 |                    ??=endif /* __features_h */
      |                    ^

Adding -nostdlibinc will not use standard system include path and it will prevent above errors.


Full diff: https://github.com/llvm/llvm-project/pull/109676.diff

1 Files Affected:

  • (modified) clang/test/CodeGen/PowerPC/ppc-xmmintrin.c (+1-1)
diff --git a/clang/test/CodeGen/PowerPC/ppc-xmmintrin.c b/clang/test/CodeGen/PowerPC/ppc-xmmintrin.c
index 4a15fa9f76ceea..8681bb3f9b4f8c 100644
--- a/clang/test/CodeGen/PowerPC/ppc-xmmintrin.c
+++ b/clang/test/CodeGen/PowerPC/ppc-xmmintrin.c
@@ -23,7 +23,7 @@
 
 // RUN: %clang -S -emit-llvm -target powerpc64-ibm-aix -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-BE
-// RUN: %clang -x c++ -fsyntax-only -target powerpc64-ibm-aix -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
+// RUN: %clang -x c++ -fsyntax-only -target powerpc64-ibm-aix -mcpu=pwr8 -ffreestanding -nostdlibinc -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns
 // RUN: %clang -S -emit-llvm -target powerpc64-ibm-aix -mcpu=pwr10 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-P10-BE

@nikic nikic requested review from AaronBallman and removed request for nikic September 23, 2024 15:31
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LGTM

@zibi2 zibi2 merged commit 9ec229d into llvm:main Oct 1, 2024
Sterling-Augustine pushed a commit to Sterling-Augustine/llvm-project that referenced this pull request Oct 3, 2024
This will fix the following failure seeing on z/OS:

```
In file included from clang/test/CodeGen/PowerPC/ppc-xmmintrin.c:31:
In file included from build/lib/clang/20/include/ppc_wrappers/xmmintrin.h:44:
In file included from build/lib/clang/20/include/altivec.h:48:
In file included from build/bin/../include/c++/v1/stddef.h:27:
In file included from build/bin/../include/c++/v1/__config:14:
In file included from build/bin/../include/c++/v1/__configuration/abi.h:15:
In file included from build/bin/../include/c++/v1/__configuration/platform.h:35:
/usr/include/features.h:1:20: error: expected unqualified-id
    1 |                    ??=if                       ??/
      |                    ^
/usr/include/features.h:2140:20: error: expected unqualified-id
 2140 |                    ??=endif /* __features_h */
      |                    ^
```
Adding `-nostdlibinc` will not use standard system include path and it
will prevent above errors.
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