[clang] 1e56821 - [Linux] Hack around Linux/sparc <bits/stdio-ldbl.h>

[Rainer Orth via cfe-commits]

Author: Rainer Orth
Date: 2022-09-10T09:37:35+02:00
New Revision: 1e56821bac02a5d3c6249bbf3ef43b8b569d2551

URL: https://github.com/llvm/llvm-project/commit/1e56821bac02a5d3c6249bbf3ef43b8b569d2551
DIFF: https://github.com/llvm/llvm-project/commit/1e56821bac02a5d3c6249bbf3ef43b8b569d2551.diff

LOG: [Linux] Hack around Linux/sparc <bits/stdio-ldbl.h>

I've been using this hack to work around the Linux/sparc64 compile failure
described in Issue #47994
<https://github.com/llvm/llvm-project/issues/47994>, especially since the
underlying glibc PR build/27558
<https://sourceware.org/bugzilla/show_bug.cgi?id=27558> doesn't seem to be
making progress and some fix is required to have LLVM build on
`sparc64-unknown-linux-gnu` at all, as evidenced on the buildbot.

Tested on `sparc64-unknown-linux-gnu`.

Differential Revision: https://reviews.llvm.org/D133405

Added: 
    

Modified: 
    clang/lib/Basic/Targets/OSTargets.h
    clang/test/Preprocessor/init.c

Removed: 
    


################################################################################
diff  --git a/clang/lib/Basic/Targets/OSTargets.h b/clang/lib/Basic/Targets/OSTargets.h
index 54e66b5bd9e1f..c75f7d9fbafeb 100644
--- a/clang/lib/Basic/Targets/OSTargets.h
+++ b/clang/lib/Basic/Targets/OSTargets.h
@@ -388,6 +388,9 @@ class LLVM_LIBRARY_VISIBILITY LinuxTargetInfo : public OSTargetInfo<Target> {
     } else {
         Builder.defineMacro("__gnu_linux__");
     }
+    // Work around Issue #47994 until glibc PR build/27558 is fixed.
+    if (Triple.isSPARC())
+      Builder.defineMacro("__NO_INLINE__");
     if (Opts.POSIXThreads)
       Builder.defineMacro("_REENTRANT");
     if (Opts.CPlusPlus)

diff  --git a/clang/test/Preprocessor/init.c b/clang/test/Preprocessor/init.c
index e3a24824ff190..028f3448f8bda 100644
--- a/clang/test/Preprocessor/init.c
+++ b/clang/test/Preprocessor/init.c
@@ -874,6 +874,9 @@
 
 // RUN: %clang_cc1 -E -dM -ffreestanding -fgnuc-version=4.2.1 -triple=sparc-none-none < /dev/null | FileCheck -match-full-lines -check-prefix SPARC -check-prefix SPARC-DEFAULT %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -fgnuc-version=4.2.1 -triple=sparc-rtems-elf < /dev/null | FileCheck -match-full-lines -check-prefix SPARC -check-prefix SPARC-DEFAULT %s
+// Check that clang defines __NO_INLINE__ unconditionally (even at -O) to
+// work around Issue #47994.
+// RUN: %clang_cc1 -E -dM -triple=sparc-unknown-linux-gnu -O < /dev/null | FileCheck -match-full-lines -check-prefix SPARC-LINUX %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -fgnuc-version=4.2.1 -triple=sparc-none-netbsd < /dev/null | FileCheck -match-full-lines -check-prefix SPARC -check-prefix SPARC-NETOPENBSD %s
 // RUN: %clang_cc1 -x c++ -E -dM -ffreestanding -fgnuc-version=4.2.1 -triple=sparc-none-none < /dev/null | FileCheck -match-full-lines -check-prefix SPARC -check-prefix SPARC-DEFAULT -check-prefix SPARC-DEFAULT-CXX %s
 //
@@ -997,6 +1000,7 @@
 // SPARC:#define __LONG_LONG_MAX__ 9223372036854775807LL
 // SPARC:#define __LONG_MAX__ 2147483647L
 // SPARC-NOT:#define __LP64__
+// SPARC-LINUX:#define __NO_INLINE__ 1
 // SPARC:#define __POINTER_WIDTH__ 32
 // SPARC-DEFAULT:#define __PTRDIFF_TYPE__ int
 // SPARC-NETOPENBSD:#define __PTRDIFF_TYPE__ long int
@@ -1380,6 +1384,11 @@
 // SPARCV9:#define __SIZEOF_POINTER__ 8
 // SPARCV9:#define __UINTPTR_TYPE__ long unsigned int
 //
+// Check that clang defines __NO_INLINE__ unconditionally (even at -O) to
+// work around Issue #47994.
+// RUN: %clang_cc1 -E -dM -triple=sparc64-unknown-linux-gnu -O < /dev/null | FileCheck -match-full-lines -check-prefix SPARC64-LINUX %s
+// SPARC64-LINUX:#define __NO_INLINE__ 1
+//
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=sparc64-none-openbsd < /dev/null | FileCheck -match-full-lines -check-prefix SPARC64-OBSD %s
 // SPARC64-OBSD:#define __INT64_TYPE__ long long int
 // SPARC64-OBSD:#define __INTMAX_C_SUFFIX__ LL