[clang] afa76fe - [XCOFF][DWARF] set default DWARF version to 3.

[Chen Zheng via cfe-commits]

Author: Chen Zheng
Date: 2021-03-05T09:21:57-05:00
New Revision: afa76fe67a42f6d40d83a4f7d0cb03373045f3f4

URL: https://github.com/llvm/llvm-project/commit/afa76fe67a42f6d40d83a4f7d0cb03373045f3f4
DIFF: https://github.com/llvm/llvm-project/commit/afa76fe67a42f6d40d83a4f7d0cb03373045f3f4.diff

LOG: [XCOFF][DWARF] set default DWARF version to 3.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D98010

Added: 
    

Modified: 
    clang/lib/Driver/ToolChains/AIX.h
    clang/test/CodeGen/dwarf-version.c

Removed: 
    


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diff  --git a/clang/lib/Driver/ToolChains/AIX.h b/clang/lib/Driver/ToolChains/AIX.h
index d4e593255736..c6aac09ddfac 100644
--- a/clang/lib/Driver/ToolChains/AIX.h
+++ b/clang/lib/Driver/ToolChains/AIX.h
@@ -74,6 +74,9 @@ class LLVM_LIBRARY_VISIBILITY AIX : public ToolChain {
 
   RuntimeLibType GetDefaultRuntimeLibType() const override;
 
+  // Set default DWARF version to 3 for now as latest AIX OS supports version 3.
+  unsigned GetDefaultDwarfVersion() const override { return 3; }
+
 protected:
   Tool *buildAssembler() const override;
   Tool *buildLinker() const override;

diff  --git a/clang/test/CodeGen/dwarf-version.c b/clang/test/CodeGen/dwarf-version.c
index 87143ee13118..6d131c470d5b 100644
--- a/clang/test/CodeGen/dwarf-version.c
+++ b/clang/test/CodeGen/dwarf-version.c
@@ -32,6 +32,17 @@
 //     Explicitly request both.
 // RUN: %clang -target i686-pc-windows-msvc -gdwarf -gcodeview -S -emit-llvm -o - %s \
 // RUN:     | FileCheck %s --check-prefixes=VER4,CODEVIEW
+// RUN: %clang -target powerpc-ibm-aix-xcoff -g -S -emit-llvm -o - %s | \
+// RUN:   FileCheck %s --check-prefix=VER3
+// RUN: %clang -target powerpc-ibm-aix-xcoff -gdwarf-2 -S -emit-llvm -o - %s | \
+// RUN:   FileCheck %s --check-prefix=VER2
+// RUN: %clang -target powerpc-ibm-aix-xcoff -gdwarf-3 -S -emit-llvm -o - %s | \
+// RUN:   FileCheck %s --check-prefix=VER3
+// RUN: %clang -target powerpc-ibm-aix-xcoff -gdwarf-4 -S -emit-llvm -o - %s | \
+// RUN:   FileCheck %s --check-prefix=VER4
+// RUN: %clang -target powerpc-ibm-aix-xcoff -gdwarf-5 -S -emit-llvm -o - %s | \
+// RUN:   FileCheck %s --check-prefix=VER5
+
 int main (void) {
   return 0;
 }