[clang] b5019ff - [SystemZ/z/OS] Set DWARF version to 4 for z/OS.

[Kai Nacke via cfe-commits]

Author: Kai Nacke
Date: 2022-06-10T13:38:58-04:00
New Revision: b5019ffc8efd472d18eb9ed55a004af8d713583d

URL: https://github.com/llvm/llvm-project/commit/b5019ffc8efd472d18eb9ed55a004af8d713583d
DIFF: https://github.com/llvm/llvm-project/commit/b5019ffc8efd472d18eb9ed55a004af8d713583d.diff

LOG: [SystemZ/z/OS] Set DWARF version to 4 for z/OS.

The DWARF version was raised to 5 for all platforms which do not opt
out. Default to DWARF version to 4 for z/OS again.

Reviewed By: abhina.sreeskantharajan, uweigand

Differential Revision: https://reviews.llvm.org/D127498

Added: 
    clang/test/Driver/zos-dwarfversion.c

Modified: 
    clang/lib/Driver/ToolChains/ZOS.h

Removed: 
    


################################################################################
diff  --git a/clang/lib/Driver/ToolChains/ZOS.h b/clang/lib/Driver/ToolChains/ZOS.h
index 50bff09935613..53138306fd410 100644
--- a/clang/lib/Driver/ToolChains/ZOS.h
+++ b/clang/lib/Driver/ToolChains/ZOS.h
@@ -30,6 +30,8 @@ class LLVM_LIBRARY_VISIBILITY ZOS : public ToolChain {
 
   bool IsIntegratedAssemblerDefault() const override { return true; }
 
+  unsigned GetDefaultDwarfVersion() const override { return 4; }
+
   void addClangTargetOptions(
       const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args,
       Action::OffloadKind DeviceOffloadingKind) const override;

diff  --git a/clang/test/Driver/zos-dwarfversion.c b/clang/test/Driver/zos-dwarfversion.c
new file mode 100644
index 0000000000000..53a727102f081
--- /dev/null
+++ b/clang/test/Driver/zos-dwarfversion.c
@@ -0,0 +1,3 @@
+// RUN: %clang -target s390x-none-zos -g -S -emit-llvm %s -o - | FileCheck %s
+
+// CHECK: !"Dwarf Version", i32 4