clang/0001-Produce-DWARF4-by-default.patch

From 8ce0e2a14ba0743c06b543c0503203a56c905e8c Mon Sep 17 00:00:00 2001
From: Konrad Kleine <kkleine@redhat.com>
Date: Tue, 4 Jun 2024 14:11:23 +0200
Subject: Produce DWARF4 by default

---
 clang/lib/Driver/ToolChain.cpp     | 4 +---
 clang/test/CodeGen/dwarf-version.c | 8 ++++----
 clang/test/Driver/as-options.s     | 4 ++--
 clang/test/Driver/cl-options.c     | 2 +-
 clang/test/Driver/clang-g-opts.c   | 2 +-
 clang/test/Driver/ve-toolchain.c   | 2 +-
 clang/test/Driver/ve-toolchain.cpp | 2 +-
 7 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/clang/lib/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
index 388030592b48..6542895cf857 100644
--- a/clang/lib/Driver/ToolChain.cpp
+++ b/clang/lib/Driver/ToolChain.cpp
@@ -428,9 +428,7 @@ ToolChain::getDefaultUnwindTableLevel(const ArgList &Args) const {
 }
 
 unsigned ToolChain::GetDefaultDwarfVersion() const {
-  // TODO: Remove the RISC-V special case when R_RISCV_SET_ULEB128 linker
-  // support becomes more widely available.
-  return getTriple().isRISCV() ? 4 : 5;
+  return 4;
 }
 
 Tool *ToolChain::getClang() const {
diff --git a/clang/test/CodeGen/dwarf-version.c b/clang/test/CodeGen/dwarf-version.c
index e63316ace69c..3d68b06c58ff 100644
--- a/clang/test/CodeGen/dwarf-version.c
+++ b/clang/test/CodeGen/dwarf-version.c
@@ -2,10 +2,10 @@
 // RUN: %clang -target x86_64-linux-gnu -gdwarf-3 -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER3
 // RUN: %clang -target x86_64-linux-gnu -gdwarf-4 -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER4
 // RUN: %clang -target x86_64-linux-gnu -gdwarf-5 -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER5
-// RUN: %clang -target x86_64-linux-gnu -g -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER5
-// RUN: %clang -target x86_64-linux-gnu -gdwarf -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER5
-// RUN: %clang --target=i386-pc-solaris -g -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER5
-// RUN: %clang --target=i386-pc-solaris -gdwarf -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER5
+// RUN: %clang -target x86_64-linux-gnu -g -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER4
+// RUN: %clang -target x86_64-linux-gnu -gdwarf -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER4
+// RUN: %clang --target=i386-pc-solaris -g -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER4
+// RUN: %clang --target=i386-pc-solaris -gdwarf -S -emit-llvm -o - %s | FileCheck %s --check-prefix=VER4
 
 // The -isysroot is used as a hack to avoid LIT messing with the SDKROOT
 // environment variable which indirecty overrides the version in the target
diff --git a/clang/test/Driver/as-options.s b/clang/test/Driver/as-options.s
index 73d002c7ef7e..71d55f7fd537 100644
--- a/clang/test/Driver/as-options.s
+++ b/clang/test/Driver/as-options.s
@@ -122,7 +122,7 @@
 // RUN:   FileCheck --check-prefix=DEBUG %s
 // RUN: %clang --target=aarch64-linux-gnu -fno-integrated-as -g0 -g %s -### 2>&1 | \
 // RUN:   FileCheck --check-prefix=DEBUG %s
-// DEBUG: "-g" "-gdwarf-5"
+// DEBUG: "-g" "-gdwarf-4"
 // RUN: %clang --target=aarch64-linux-gnu -fno-integrated-as -g -g0 %s -### 2>&1 | \
 // RUN:   FileCheck --check-prefix=NODEBUG %s
 // RUN: %clang --target=aarch64-linux-gnu -fno-integrated-as -gdwarf-5 -g0 %s -### 2>&1 | \
@@ -141,7 +141,7 @@
 // RUN: %clang --target=aarch64-linux-gnu -fno-integrated-as -gdwarf-2 %s -### 2>&1 | \
 // RUN:   FileCheck --check-prefix=GDWARF2 %s
 // RUN: %clang --target=aarch64-linux-gnu -fno-integrated-as -gdwarf %s -### 2>&1 | \
-// RUN:   FileCheck --check-prefix=GDWARF5 %s
+// RUN:   FileCheck --check-prefix=GDWARF4 %s
 
 // RUN: %clang --target=aarch64-linux-gnu -fno-integrated-as -gdwarf-5 %s -### 2>&1 | \
 // RUN:   FileCheck --check-prefix=GDWARF5 %s
diff --git a/clang/test/Driver/cl-options.c b/clang/test/Driver/cl-options.c
index 5b6dfe308a76..4da65272a1b0 100644
--- a/clang/test/Driver/cl-options.c
+++ b/clang/test/Driver/cl-options.c
@@ -571,7 +571,7 @@
 // RUN: %clang_cl -gdwarf /Z7 /c -### -- %s 2>&1 | FileCheck -check-prefix=Z7_gdwarf %s
 // Z7_gdwarf-NOT: "-gcodeview"
 // Z7_gdwarf: "-debug-info-kind=constructor"
-// Z7_gdwarf: "-dwarf-version=
+// Z7_gdwarf: "-dwarf-version=4
 
 // RUN: %clang_cl /ZH:MD5 /c -### -- %s 2>&1 | FileCheck -check-prefix=ZH_MD5 %s
 // ZH_MD5: "-gsrc-hash=md5"
diff --git a/clang/test/Driver/clang-g-opts.c b/clang/test/Driver/clang-g-opts.c
index b73602a155b0..b0cf64674253 100644
--- a/clang/test/Driver/clang-g-opts.c
+++ b/clang/test/Driver/clang-g-opts.c
@@ -36,7 +36,7 @@
 
 // CHECK-WITHOUT-G-NOT: -debug-info-kind
 // CHECK-WITH-G: "-debug-info-kind=constructor"
-// CHECK-WITH-G: "-dwarf-version=5"
+// CHECK-WITH-G: "-dwarf-version=4"
 // CHECK-WITH-G-DWARF4: "-dwarf-version=4"
 // CHECK-WITH-G-DWARF2: "-dwarf-version=2"
 
diff --git a/clang/test/Driver/ve-toolchain.c b/clang/test/Driver/ve-toolchain.c
index 078341eb1202..6ccbef6a0c36 100644
--- a/clang/test/Driver/ve-toolchain.c
+++ b/clang/test/Driver/ve-toolchain.c
@@ -6,7 +6,7 @@
 /// Checking dwarf-version
 
 // RUN: %clang -### -g --target=ve %s 2>&1 | FileCheck -check-prefix=DWARF_VER %s
-// DWARF_VER: "-dwarf-version=5"
+// DWARF_VER: "-dwarf-version=4"
 
 ///-----------------------------------------------------------------------------
 /// Checking include-path
diff --git a/clang/test/Driver/ve-toolchain.cpp b/clang/test/Driver/ve-toolchain.cpp
index cd48dd792f85..f77781d4c6fa 100644
--- a/clang/test/Driver/ve-toolchain.cpp
+++ b/clang/test/Driver/ve-toolchain.cpp
@@ -7,7 +7,7 @@
 
 // RUN: %clangxx -### -g --target=ve-unknown-linux-gnu \
 // RUN:     %s 2>&1 | FileCheck -check-prefix=DWARF_VER %s
-// DWARF_VER: "-dwarf-version=5"
+// DWARF_VER: "-dwarf-version=4"
 
 ///-----------------------------------------------------------------------------
 /// Checking include-path
-- 
2.45.1