Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -6224,7 +6224,7 @@
   std::string Linker = getToolChain().GetProgramPath(getShortName());
   ArgStringList CmdArgs;
   CmdArgs.push_back("-flavor");
-  CmdArgs.push_back("gnu");
+  CmdArgs.push_back("old-gnu");
   CmdArgs.push_back("-target");
   CmdArgs.push_back(Args.MakeArgString(getToolChain().getTripleString()));
   AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
@@ -8477,7 +8477,7 @@
 
   if (llvm::sys::path::filename(ToolChain.Linker) == "lld") {
     CmdArgs.push_back("-flavor");
-    CmdArgs.push_back("gnu");
+    CmdArgs.push_back("old-gnu");
     CmdArgs.push_back("-target");
     CmdArgs.push_back(Args.MakeArgString(getToolChain().getTripleString()));
   }
@@ -9467,7 +9467,7 @@
   StringRef LinkerName = Args.getLastArgValue(options::OPT_fuse_ld_EQ, "ld");
   if (LinkerName.equals_lower("lld")) {
     CmdArgs.push_back("-flavor");
-    CmdArgs.push_back("gnu");
+    CmdArgs.push_back("old-gnu");
   }
 
   if (!D.SysRoot.empty())
Index: test/Driver/amdgpu-toolchain.c
===================================================================
--- test/Driver/amdgpu-toolchain.c
+++ test/Driver/amdgpu-toolchain.c
@@ -1,3 +1,3 @@
 // RUN: %clang -### -target amdgcn--amdhsa -x assembler -mcpu=kaveri %s 2>&1 | FileCheck -check-prefix=AS_LINK %s
 // AS_LINK: clang{{.*}} "-cc1as"
-// AS_LINK: lld{{.*}} "-flavor" "gnu" "-target" "amdgcn--amdhsa"
+// AS_LINK: lld{{.*}} "-flavor" "old-gnu" "-target" "amdgcn--amdhsa"
Index: test/Driver/mingw-useld.c
===================================================================
--- test/Driver/mingw-useld.c
+++ test/Driver/mingw-useld.c
@@ -1,10 +1,10 @@
 // RUN: %clang -### -target i686-pc-windows-gnu --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s 2>&1 | FileCheck -check-prefix=CHECK_LD_32 %s
 // CHECK_LD_32: {{ld|ld.exe}}"
 // CHECK_LD_32: "i386pe"
-// CHECK_LD_32_NOT: "-flavor" "gnu"
+// CHECK_LD_32_NOT: "-flavor" "old-gnu"
 
 // RUN: %clang -### -target i686-pc-windows-gnu --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -fuse-ld=lld 2>&1 | FileCheck -check-prefix=CHECK_LLD_32 %s
-// CHECK_LLD_32: lld" "-flavor" "gnu"
+// CHECK_LLD_32: lld" "-flavor" "old-gnu"
 // CHECK_LLD_32: "i386pe"
 
 // RUN: %clang -### -target i686-pc-windows-gnu --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -fuse-ld=link.exe 2>&1 | FileCheck -check-prefix=CHECK_LINK_32 %s
@@ -12,9 +12,9 @@
 // CHECK_LINK_32: "i386pe"
 
 // RUN: %clang -### -target x86_64-pc-windows-gnu --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -fuse-ld=lld 2>&1 | FileCheck -check-prefix=CHECK_LLD_64 %s
-// CHECK_LLD_64: lld" "-flavor" "gnu"
+// CHECK_LLD_64: lld" "-flavor" "old-gnu"
 // CHECK_LLD_64: "i386pep"
 
 // RUN: %clang -### -target arm-pc-windows-gnu --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -fuse-ld=lld 2>&1 | FileCheck -check-prefix=CHECK_LLD_ARM %s
-// CHECK_LLD_ARM: lld" "-flavor" "gnu"
+// CHECK_LLD_ARM: lld" "-flavor" "old-gnu"
 // CHECK_LLD_ARM: "thumb2pe"
Index: test/Driver/mips-mti-linux.c
===================================================================
--- test/Driver/mips-mti-linux.c
+++ test/Driver/mips-mti-linux.c
@@ -14,7 +14,7 @@
 // CHECK-BE-HF-32R2: "{{[^"]*}}clang{{[^"]*}}" {{.*}} "-triple" "mips-mti-linux"
 // CHECK-BE-HF-32R2-SAME: "-fuse-init-array" "-target-cpu" "mips32r2"
 // CHECK-BE-HF-32R2-SAME: "-isysroot" "{{.*}}mips_mti_linux/sysroot"
-// CHECK-BE-HF-32R2: "{{[^"]*}}lld{{[^"]*}}" "-flavor" "gnu" "-target" "mips-mti-linux"
+// CHECK-BE-HF-32R2: "{{[^"]*}}lld{{[^"]*}}" "-flavor" "old-gnu" "-target" "mips-mti-linux"
 // CHECK-BE-HF-32R2-SAME: "--sysroot=[[SYSROOT:[^"]+]]" {{.*}} "-dynamic-linker" "/lib/ld-musl-mips.so.1"
 // CHECK-BE-HF-32R2-SAME: "[[SYSROOT]]/mips-r2-hard-musl/usr/lib{{/|\\\\}}crt1.o"
 // CHECK-BE-HF-32R2-SAME: "[[SYSROOT]]/mips-r2-hard-musl/usr/lib{{/|\\\\}}crti.o"
@@ -32,7 +32,7 @@
 // CHECK-LE-HF-32R2: "{{[^"]*}}clang{{[^"]*}}" {{.*}} "-triple" "mipsel-mti-linux"
 // CHECK-LE-HF-32R2-SAME: "-fuse-init-array" "-target-cpu" "mips32r2"
 // CHECK-LE-HF-32R2-SAME: "-isysroot" "{{.*}}mips_mti_linux/sysroot"
-// CHECK-LE-HF-32R2: "{{[^"]*}}lld{{[^"]*}}" "-flavor" "gnu" "-target" "mipsel-mti-linux"
+// CHECK-LE-HF-32R2: "{{[^"]*}}lld{{[^"]*}}" "-flavor" "old-gnu" "-target" "mipsel-mti-linux"
 // CHECK-LE-HF-32R2-SAME: "--sysroot=[[SYSROOT:[^"]+]]" {{.*}} "-dynamic-linker" "/lib/ld-musl-mipsel.so.1"
 // CHECK-LE-HF-32R2-SAME: "[[SYSROOT]]/mipsel-r2-hard-musl/usr/lib{{/|\\\\}}crt1.o"
 // CHECK-LE-HF-32R2-SAME: "[[SYSROOT]]/mipsel-r2-hard-musl/usr/lib{{/|\\\\}}crti.o"