Index: ELF/Driver.cpp
===================================================================
--- ELF/Driver.cpp
+++ ELF/Driver.cpp
@@ -260,13 +260,19 @@
   cl::ParseCommandLineOptions(V.size(), V.data());
 }
 
-// Some command line options or some combinations of them are not allowed.
-// This function checks for such errors.
-static void checkOptions(opt::InputArgList &Args) {
+// Some options combinations are not compatible, other has target
+// specific limitations and should be updated accordinly after inferring target
+// information from input files. This function checks incompatible options
+// combinations and adjusts the configuration if needed.
+static void finalizeOptions(opt::InputArgList &Args) {
   // The MIPS ABI as of 2016 does not support the GNU-style symbol lookup
-  // table which is a relatively new feature.
-  if (Config->EMachine == EM_MIPS && Config->GnuHash)
-    error("the .gnu.hash section is not compatible with the MIPS target.");
+  // table which is a relatively new feature. Other targets defaults to
+  // both GNU and classic ELF hash styled sections.
+  if (Config->EMachine == EM_MIPS && Config->GnuHash) {
+    if (Args.hasArg(OPT_hash_style))
+      error("the .gnu.hash section is not compatible with the MIPS target.");
+    Config->GnuHash = false;
+  }
 
   if (Config->Pie && Config->Shared)
     error("-shared and -pie may not be used together");
@@ -386,7 +392,7 @@
   createFiles(Args);
   inferMachineType();
   setConfigs();
-  checkOptions(Args);
+  finalizeOptions(Args);
   if (ErrorCount)
     return;
 
@@ -561,7 +567,7 @@
 }
 
 static std::pair<bool, bool> getHashStyle(opt::InputArgList &Args) {
-  StringRef S = Args.getLastArgValue(OPT_hash_style, "sysv");
+  StringRef S = Args.getLastArgValue(OPT_hash_style, "both");
   if (S == "sysv")
     return {true, false};
   if (S == "gnu")
Index: test/ELF/aarch64-gnu-ifunc-plt.s
===================================================================
--- test/ELF/aarch64-gnu-ifunc-plt.s
+++ test/ELF/aarch64-gnu-ifunc-plt.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %S/Inputs/shared2.s -o %t1.o
 // RUN: ld.lld %t1.o --shared -o %t.so
 // RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux-gnu %s -o %t.o
-// RUN: ld.lld %t.so %t.o -o %tout
+// RUN: ld.lld --hash-style=sysv %t.so %t.o -o %tout
 // RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DISASM
 // RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT
 // RUN: llvm-readobj -r -dynamic-table %tout | FileCheck %s
Index: test/ELF/aarch64-got-relocations.s
===================================================================
--- test/ELF/aarch64-got-relocations.s
+++ test/ELF/aarch64-got-relocations.s
@@ -1,6 +1,6 @@
 # REQUIRES: aarch64
 # RUN: llvm-mc -filetype=obj -triple=aarch64-unknown-cloudabi %s -o %t.o
-# RUN: ld.lld -pie %t.o -o %t
+# RUN: ld.lld --hash-style=sysv -pie %t.o -o %t
 # RUN: llvm-readobj -r %t | FileCheck %s
 
 # If we're addressing a global relatively through the GOT, we still need to
Index: test/ELF/aarch64-tls-gdie.s
===================================================================
--- test/ELF/aarch64-tls-gdie.s
+++ test/ELF/aarch64-tls-gdie.s
@@ -2,7 +2,7 @@
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=aarch64-pc-linux
 // RUN: llvm-mc %p/Inputs/aarch64-tls-gdie.s -o %t2.o -filetype=obj -triple=aarch64-pc-linux
 // RUN: ld.lld %t2.o -o %t2.so -shared
-// RUN: ld.lld %t.o %t2.so -o %t
+// RUN: ld.lld --hash-style=sysv %t.o %t2.so -o %t
 // RUN: llvm-readobj -s %t | FileCheck --check-prefix=SEC %s
 // RUN: llvm-objdump -d %t | FileCheck %s
 
Index: test/ELF/aarch64-tls-ie.s
===================================================================
--- test/ELF/aarch64-tls-ie.s
+++ test/ELF/aarch64-tls-ie.s
@@ -2,7 +2,7 @@
 # RUN: llvm-mc -filetype=obj -triple=aarch64-unknown-freebsd %p/Inputs/aarch64-tls-ie.s -o %tdso.o
 # RUN: llvm-mc -filetype=obj -triple=aarch64-unknown-freebsd %s -o %tmain.o
 # RUN: ld.lld -shared %tdso.o -o %tdso.so
-# RUN: ld.lld %tmain.o %tdso.so -o %tout
+# RUN: ld.lld --hash-style=sysv %tmain.o %tdso.so -o %tout
 # RUN: llvm-objdump -d %tout | FileCheck %s
 # RUN: llvm-readobj -s -r %tout | FileCheck -check-prefix=RELOC %s
 # REQUIRES: aarch64
Index: test/ELF/aarch64-tls-static.s
===================================================================
--- test/ELF/aarch64-tls-static.s
+++ test/ELF/aarch64-tls-static.s
@@ -1,6 +1,6 @@
 // REQUIRES: aarch64
 // RUN: llvm-mc %s -o %t.o -triple aarch64-pc-linux -filetype=obj
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-readobj -s %t.so | FileCheck --check-prefix=SEC %s
 // RUN: llvm-objdump -d %t.so | FileCheck %s
 
Index: test/ELF/aarch64-tlsdesc.s
===================================================================
--- test/ELF/aarch64-tlsdesc.s
+++ test/ELF/aarch64-tlsdesc.s
@@ -1,6 +1,6 @@
 // REQUIRES: aarch64
 // RUN: llvm-mc -filetype=obj -triple=aarch64-pc-linux %s -o %t.o
-// RUN: ld.lld -shared %t.o -o %t.so
+// RUN: ld.lld --hash-style=sysv -shared %t.o -o %t.so
 // RUN: llvm-objdump -d %t.so | FileCheck %s
 // RUN: llvm-readobj -r %t.so | FileCheck --check-prefix=REL %s
 
Index: test/ELF/abs-hidden.s
===================================================================
--- test/ELF/abs-hidden.s
+++ test/ELF/abs-hidden.s
@@ -1,7 +1,7 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/abs-hidden.s -o %t2.o
-// RUN: ld.lld %t.o %t2.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o %t2.o -o %t.so -shared
 // RUN: llvm-readobj -r -s -section-data %t.so | FileCheck %s
 
         .quad foo
Index: test/ELF/amdgpu-relocs.s
===================================================================
--- test/ELF/amdgpu-relocs.s
+++ test/ELF/amdgpu-relocs.s
@@ -1,5 +1,5 @@
 # RUN: llvm-mc -filetype=obj -triple=amdgcn--amdhsa -mcpu=fiji %s -o %t.o
-# RUN: ld.lld -shared %t.o -o %t.so
+# RUN: ld.lld --hash-style=sysv -shared %t.o -o %t.so
 # RUN: llvm-readobj -r %t.so | FileCheck %s
 # RUN: llvm-objdump -s %t.so | FileCheck %s --check-prefix=OBJDUMP
 
Index: test/ELF/arm-copy.s
===================================================================
--- test/ELF/arm-copy.s
+++ test/ELF/arm-copy.s
@@ -2,7 +2,7 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %p/Inputs/relocation-copy-arm.s -o %t2.o
 // RUN: ld.lld -shared %t2.o -o %t2.so
-// RUN: ld.lld %t.o %t2.so -o %t3
+// RUN: ld.lld --hash-style=sysv %t.o %t2.so -o %t3
 // RUN: llvm-readobj -s -r --expand-relocs -symbols %t3 | FileCheck %s
 // RUN: llvm-objdump -d -triple=armv7a-none-linux-gnueabi %t3 | FileCheck -check-prefix=CODE %s
 // RUN: llvm-objdump -s -triple=armv7a-none-linux-gnueabi -section=.rodata %t3 | FileCheck -check-prefix=RODATA %s
Index: test/ELF/arm-exidx-shared.s
===================================================================
--- test/ELF/arm-exidx-shared.s
+++ test/ELF/arm-exidx-shared.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t
-// RUN: ld.lld %t --shared -o %t2 2>&1
+// RUN: ld.lld --hash-style=sysv %t --shared -o %t2 2>&1
 // RUN: llvm-readobj --relocations %t2 | FileCheck %s
 // RUN: llvm-objdump -s -triple=armv7a-none-linux-gnueabi %t2 | FileCheck -check-prefix=CHECK-EXTAB %s
 // REQUIRES: arm
Index: test/ELF/arm-gnu-ifunc-plt.s
===================================================================
--- test/ELF/arm-gnu-ifunc-plt.s
+++ test/ELF/arm-gnu-ifunc-plt.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-linux-gnueabihf %S/Inputs/arm-shared.s -o %t1.o
 // RUN: ld.lld %t1.o --shared -o %t.so
 // RUN: llvm-mc -filetype=obj -triple=armv7a-linux-gnueabihf %s -o %t.o
-// RUN: ld.lld %t.so %t.o -o %tout
+// RUN: ld.lld --hash-style=sysv %t.so %t.o -o %tout
 // RUN: llvm-objdump -triple=armv7a-linux-gnueabihf -d %tout | FileCheck %s --check-prefix=DISASM
 // RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT
 // RUN: llvm-readobj -r -dynamic-table %tout | FileCheck %s
Index: test/ELF/arm-got-relative.s
===================================================================
--- test/ELF/arm-got-relative.s
+++ test/ELF/arm-got-relative.s
@@ -1,6 +1,6 @@
 // REQUIRES: arm
 // RUN: llvm-mc -position-independent -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o
-// RUN: ld.lld %t.o -shared -o %t
+// RUN: ld.lld --hash-style=sysv %t.o -shared -o %t
 // RUN: llvm-readobj -s -symbols -dyn-relocations %t | FileCheck %s
 // RUN: llvm-objdump -d -triple=armv7a-none-linux-gnueabi %t | FileCheck -check-prefix=CODE %s
  .syntax unified
Index: test/ELF/arm-pie-relative.s
===================================================================
--- test/ELF/arm-pie-relative.s
+++ test/ELF/arm-pie-relative.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t
-// RUN: ld.lld %t --pie -o %t2
+// RUN: ld.lld --hash-style=sysv %t --pie -o %t2
 // RUN: llvm-readobj -r %t2 | FileCheck %s
 // RUN: llvm-objdump -s %t2 | FileCheck %s --check-prefix=GOT
 // REQUIRES: arm
Index: test/ELF/arm-plt-reloc.s
===================================================================
--- test/ELF/arm-plt-reloc.s
+++ test/ELF/arm-plt-reloc.s
@@ -2,7 +2,7 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t2
 // RUN: ld.lld %t1 %t2 -o %t
 // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t | FileCheck %s
-// RUN: ld.lld -shared %t1 %t2 -o %t3
+// RUN: ld.lld --hash-style=sysv -shared %t1 %t2 -o %t3
 // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t3 | FileCheck -check-prefix=DSO %s
 // RUN: llvm-readobj -s -r %t3 | FileCheck -check-prefix=DSOREL %s
 // REQUIRES: arm
Index: test/ELF/arm-thumb-plt-reloc.s
===================================================================
--- test/ELF/arm-thumb-plt-reloc.s
+++ test/ELF/arm-thumb-plt-reloc.s
@@ -2,7 +2,7 @@
 // RUN: llvm-mc -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t2
 // RUN: ld.lld %t1 %t2 -o %t
 // RUN: llvm-objdump -triple=thumbv7a-none-linux-gnueabi -d %t | FileCheck %s
-// RUN: ld.lld -shared %t1 %t2 -o %t3
+// RUN: ld.lld --hash-style=sysv -shared %t1 %t2 -o %t3
 // RUN: llvm-objdump -triple=thumbv7a-none-linux-gnueabi -d %t3 | FileCheck -check-prefix=DSOTHUMB %s
 // RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d %t3 | FileCheck -check-prefix=DSOARM %s
 // RUN: llvm-readobj -s -r %t3 | FileCheck -check-prefix=DSOREL %s
Index: test/ELF/arm-tls-gd-nonpreemptible.s
===================================================================
--- test/ELF/arm-tls-gd-nonpreemptible.s
+++ test/ELF/arm-tls-gd-nonpreemptible.s
@@ -2,7 +2,7 @@
 // RUN: ld.lld %t -o %t2
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
 // RUN: llvm-objdump -s %t2 | FileCheck %s
-// RUN: ld.lld %t --shared -o %t3.so
+// RUN: ld.lld --hash-style=sysv %t --shared -o %t3.so
 // RUN: llvm-objdump -s %t3.so | FileCheck -check-prefix=CHECK-SHARED %s
 // REQUIRES: arm
 
Index: test/ELF/arm-tls-gd32.s
===================================================================
--- test/ELF/arm-tls-gd32.s
+++ test/ELF/arm-tls-gd32.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-readobj -s -dyn-relocations %t.so | FileCheck --check-prefix=SEC %s
 // RUN: llvm-objdump -d -triple=armv7a-linux-gnueabi %t.so | FileCheck %s
 // REQUIRES: arm
Index: test/ELF/arm-tls-ie32.s
===================================================================
--- test/ELF/arm-tls-ie32.s
+++ test/ELF/arm-tls-ie32.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-readobj -s -dyn-relocations %t.so | FileCheck --check-prefix=SEC %s
 // RUN: llvm-objdump -d -triple=armv7a-linux-gnueabi %t.so | FileCheck %s
 // REQUIRES: arm
Index: test/ELF/arm-tls-ldm32.s
===================================================================
--- test/ELF/arm-tls-ldm32.s
+++ test/ELF/arm-tls-ldm32.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-readobj -s -dyn-relocations %t.so | FileCheck --check-prefix=SEC %s
 // RUN: llvm-objdump -d -triple=armv7a-linux-gnueabi %t.so | FileCheck %s
 // REQUIRES: arm
Index: test/ELF/arm-tls-norelax-gd-ie.s
===================================================================
--- test/ELF/arm-tls-norelax-gd-ie.s
+++ test/ELF/arm-tls-norelax-gd-ie.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %p/Inputs/arm-tls-get-addr.s -o %t1
 // RUN: ld.lld %t1 --shared -o %t1.so
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
-// RUN: ld.lld %t1.so %t.o -o %t
+// RUN: ld.lld --hash-style=sysv %t1.so %t.o -o %t
 // RUN: llvm-readobj -s -dyn-relocations %t | FileCheck %s
 // REQUIRES: arm
 
Index: test/ELF/arm-tls-norelax-gd-le.s
===================================================================
--- test/ELF/arm-tls-norelax-gd-le.s
+++ test/ELF/arm-tls-norelax-gd-le.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %p/Inputs/arm-tls-get-addr.s -o %t1
 // RUN: ld.lld %t1 --shared -o %t1.so
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
-// RUN: ld.lld %t1.so %t.o -o %t
+// RUN: ld.lld --hash-style=sysv %t1.so %t.o -o %t
 // RUN: llvm-objdump -s %t | FileCheck %s
 // REQUIRES: arm
 
Index: test/ELF/arm-tls-norelax-ie-le.s
===================================================================
--- test/ELF/arm-tls-norelax-ie-le.s
+++ test/ELF/arm-tls-norelax-ie-le.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %p/Inputs/arm-tls-get-addr.s -o %t1
 // RUN: ld.lld %t1 --shared -o %t1.so
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
-// RUN: ld.lld %t1.so %t.o -o %t
+// RUN: ld.lld --hash-style=sysv %t1.so %t.o -o %t
 // RUN: llvm-objdump -s -triple=armv7a-linux-gnueabi %t | FileCheck %s
 // REQUIRES: arm
 
Index: test/ELF/arm-tls-norelax-ld-le.s
===================================================================
--- test/ELF/arm-tls-norelax-ld-le.s
+++ test/ELF/arm-tls-norelax-ld-le.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %p/Inputs/arm-tls-get-addr.s -o %t1
 // RUN: ld.lld %t1 --shared -o %t1.so
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
-// RUN: ld.lld %t1.so %t.o -o %t
+// RUN: ld.lld --hash-style=sysv %t1.so %t.o -o %t
 // RUN: llvm-objdump -s %t | FileCheck %s
 // REQUIRES: arm
 
Index: test/ELF/basic-ppc.s
===================================================================
--- test/ELF/basic-ppc.s
+++ test/ELF/basic-ppc.s
@@ -1,5 +1,5 @@
 # RUN: llvm-mc -filetype=obj -triple=powerpc-unknown-freebsd %s -o %t
-# RUN: ld.lld -discard-all -shared %t -o %t2
+# RUN: ld.lld --hash-style=sysv -discard-all -shared %t -o %t2
 # RUN: llvm-readobj -file-headers -sections -section-data -program-headers %t2 | FileCheck %s
 # REQUIRES: ppc
 
Index: test/ELF/copy-rel-pie.s
===================================================================
--- test/ELF/copy-rel-pie.s
+++ test/ELF/copy-rel-pie.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=x86_64-pc-linux
 // RUN: llvm-mc %p/Inputs/copy-rel-pie.s -o %t2.o -filetype=obj -triple=x86_64-pc-linux
 // RUN: ld.lld %t2.o -o %t2.so -shared
-// RUN: ld.lld %t.o %t2.so -o %t.exe -pie
+// RUN: ld.lld --hash-style=sysv %t.o %t2.so -o %t.exe -pie
 // RUN: llvm-readobj -s -r %t.exe | FileCheck %s
 // RUN: llvm-objdump -d %t.exe | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/dynamic-got.s
===================================================================
--- test/ELF/dynamic-got.s
+++ test/ELF/dynamic-got.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=i386-pc-linux %s -o %t.o
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-readobj -s -l -section-data -r %t.so | FileCheck %s
 
 // CHECK:      Name: .got
Index: test/ELF/dynamic-list-preempt.s
===================================================================
--- test/ELF/dynamic-list-preempt.s
+++ test/ELF/dynamic-list-preempt.s
@@ -3,7 +3,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
 # RUN: echo "{ foo; zed; };" > %t.list
 # RUN: echo "{ global: foo; bar; local: *; };" > %t.vers
-# RUN: ld.lld -fatal-warnings -dynamic-list %t.list -version-script %t.vers -shared %t.o -o %t.so
+# RUN: ld.lld --hash-style=sysv -fatal-warnings -dynamic-list %t.list -version-script %t.vers -shared %t.o -o %t.so
 # RUN: llvm-readobj -r %t.so | FileCheck --check-prefix=RELOCS %s
 # RUN: llvm-readobj -dyn-symbols  %t.so | FileCheck --check-prefix=DYNSYMS %s
 
Index: test/ELF/dynamic-list.s
===================================================================
--- test/ELF/dynamic-list.s
+++ test/ELF/dynamic-list.s
@@ -1,24 +1,24 @@
 # REQUIRES: x86
 
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
-# RUN: ld.lld -shared %t2.o -soname shared -o %t2.so
+# RUN: ld.lld --hash-style=sysv -shared %t2.o -soname shared -o %t2.so
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
 
 ## Check exporting only one symbol.
 # RUN: echo "{ foo1; };" > %t.list
-# RUN: ld.lld --dynamic-list %t.list %t %t2.so -o %t.exe
+# RUN: ld.lld --hash-style=sysv --dynamic-list %t.list %t %t2.so -o %t.exe
 # RUN: llvm-readobj -dyn-symbols %t.exe | FileCheck %s
 
 ## And now using quoted strings (the output is the same since it does
 ## use any wildcard character).
 # RUN: echo "{ \"foo1\"; };" > %t.list
-# RUN: ld.lld --dynamic-list %t.list %t %t2.so -o %t.exe
+# RUN: ld.lld --hash-style=sysv --dynamic-list %t.list %t %t2.so -o %t.exe
 # RUN: llvm-readobj -dyn-symbols %t.exe | FileCheck %s
 
 ## And now using --export-dynamic-symbol.
-# RUN: ld.lld --export-dynamic-symbol foo1 %t %t2.so -o %t.exe
+# RUN: ld.lld --hash-style=sysv --export-dynamic-symbol foo1 %t %t2.so -o %t.exe
 # RUN: llvm-readobj -dyn-symbols %t.exe | FileCheck %s
-# RUN: ld.lld --export-dynamic-symbol=foo1 %t %t2.so -o %t.exe
+# RUN: ld.lld --hash-style=sysv --export-dynamic-symbol=foo1 %t %t2.so -o %t.exe
 # RUN: llvm-readobj -dyn-symbols %t.exe | FileCheck %s
 
 # CHECK:      DynamicSymbols [
@@ -45,11 +45,11 @@
 
 ## Now export all the foo1, foo2, and foo31 symbols
 # RUN: echo "{ foo1; foo2; foo31; };" > %t.list
-# RUN: ld.lld --dynamic-list %t.list %t %t2.so -o %t.exe
+# RUN: ld.lld --hash-style=sysv --dynamic-list %t.list %t %t2.so -o %t.exe
 # RUN: llvm-readobj -dyn-symbols %t.exe | FileCheck -check-prefix=CHECK2 %s
 # RUN: echo "{ foo1; foo2; };" > %t1.list
 # RUN: echo "{ foo31; };" > %t2.list
-# RUN: ld.lld --dynamic-list %t1.list --dynamic-list %t2.list %t %t2.so -o %t.exe
+# RUN: ld.lld --hash-style=sysv --dynamic-list %t1.list --dynamic-list %t2.list %t %t2.so -o %t.exe
 # RUN: llvm-readobj -dyn-symbols %t.exe | FileCheck -check-prefix=CHECK2 %s
 
 # CHECK2:      DynamicSymbols [
@@ -95,11 +95,11 @@
 ## --export-dynamic overrides --dynamic-list, i.e. --export-dynamic with an
 ## incomplete dynamic-list still exports everything.
 # RUN: echo "{ foo2; };" > %t.list
-# RUN: ld.lld --dynamic-list %t.list --export-dynamic %t %t2.so -o %t.exe
+# RUN: ld.lld --hash-style=sysv --dynamic-list %t.list --export-dynamic %t %t2.so -o %t.exe
 # RUN: llvm-readobj -dyn-symbols %t.exe | FileCheck -check-prefix=CHECK3 %s
 
 ## The same with --export-dynamic-symbol.
-# RUN: ld.lld --export-dynamic-symbol=foo2 --export-dynamic %t %t2.so -o %t.exe
+# RUN: ld.lld --hash-style=sysv --export-dynamic-symbol=foo2 --export-dynamic %t %t2.so -o %t.exe
 # RUN: llvm-readobj -dyn-symbols %t.exe | FileCheck -check-prefix=CHECK3 %s
 
 # CHECK3:      DynamicSymbols [
Index: test/ELF/dynamic-reloc.s
===================================================================
--- test/ELF/dynamic-reloc.s
+++ test/ELF/dynamic-reloc.s
@@ -2,7 +2,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/dynamic-reloc.s -o %t3.o
 // RUN: ld.lld -shared %t2.o -o %t2.so
-// RUN: ld.lld %t.o %t3.o %t2.so -o %t
+// RUN: ld.lld --hash-style=sysv %t.o %t3.o %t2.so -o %t
 // RUN: llvm-readobj -dynamic-table -r --expand-relocs -s %t | FileCheck %s
 // REQUIRES: x86
 
Index: test/ELF/eh-align-cie.s
===================================================================
--- test/ELF/eh-align-cie.s
+++ test/ELF/eh-align-cie.s
@@ -31,7 +31,7 @@
 // OBJ-NEXT:    )
 
 
-// RUN: ld.lld %t.o -o %t -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t -shared
 // RUN: llvm-readobj -s -section-data %t | FileCheck %s
 
 // Check that the size of the CIE was changed to (0x1C + 4) and the FDE one was
Index: test/ELF/eh-frame-hdr-augmentation.s
===================================================================
--- test/ELF/eh-frame-hdr-augmentation.s
+++ test/ELF/eh-frame-hdr-augmentation.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-// RUN: ld.lld --eh-frame-hdr %t.o -o %t -shared
+// RUN: ld.lld --hash-style=sysv --eh-frame-hdr %t.o -o %t -shared
 // RUN: llvm-objdump --dwarf=frames %t | FileCheck %s
 
 // CHECK: .eh_frame contents:
Index: test/ELF/eh-frame-merge.s
===================================================================
--- test/ELF/eh-frame-merge.s
+++ test/ELF/eh-frame-merge.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-// RUN: ld.lld %t.o %t.o -o %t -shared
+// RUN: ld.lld --hash-style=sysv %t.o %t.o -o %t -shared
 // RUN: llvm-readobj -s -section-data %t | FileCheck %s
 
         .section	foo,"ax",@progbits
Index: test/ELF/eh-frame-padding-no-rosegment.s
===================================================================
--- test/ELF/eh-frame-padding-no-rosegment.s
+++ test/ELF/eh-frame-padding-no-rosegment.s
@@ -31,7 +31,7 @@
 // OBJ-NEXT:   0020: 20000000 00000000 00000000 00000000
 // OBJ-NEXT: )
 
-// RUN: ld.lld %t.o -no-rosegment -o %t -shared
+// RUN: ld.lld --hash-style=sysv %t.o -no-rosegment -o %t -shared
 
 // Check that .eh_frame is in the same segment as .text
 // RUN: llvm-readobj -l --elf-output-style=GNU %t | FileCheck --check-prefix=PHDR %s
Index: test/ELF/emit-relocs-shared.s
===================================================================
--- test/ELF/emit-relocs-shared.s
+++ test/ELF/emit-relocs-shared.s
@@ -1,6 +1,6 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-# RUN: ld.lld --emit-relocs %t.o -o %t.so -shared
+# RUN: ld.lld --hash-style=sysv --emit-relocs %t.o -o %t.so -shared
 # RUN: llvm-readobj -r %t.so | FileCheck %s
 
 .data
Index: test/ELF/global-offset-table-position-aarch64.s
===================================================================
--- test/ELF/global-offset-table-position-aarch64.s
+++ test/ELF/global-offset-table-position-aarch64.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %s -o %t
-// RUN: ld.lld -shared %t -o %t2
+// RUN: ld.lld --hash-style=sysv -shared %t -o %t2
 // RUN: llvm-readobj -t %t2 | FileCheck %s
 // REQUIRES: aarch64
 .globl  a
Index: test/ELF/global-offset-table-position-arm.s
===================================================================
--- test/ELF/global-offset-table-position-arm.s
+++ test/ELF/global-offset-table-position-arm.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=armv7a-linux-gnueabihf %s -o %t
-// RUN: ld.lld -shared %t -o %t2
+// RUN: ld.lld --hash-style=sysv -shared %t -o %t2
 // RUN: llvm-readobj -t %t2 | FileCheck %s
 // REQUIRES: arm
 
Index: test/ELF/global-offset-table-position-i386.s
===================================================================
--- test/ELF/global-offset-table-position-i386.s
+++ test/ELF/global-offset-table-position-i386.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=i386-pc-linux %s -o %t
-// RUN: ld.lld -shared %t -o %t2
+// RUN: ld.lld --hash-style=sysv -shared %t -o %t2
 // RUN: llvm-readobj -t %t2 | FileCheck %s
 // REQUIRES: x86
 
Index: test/ELF/global-offset-table-position.s
===================================================================
--- test/ELF/global-offset-table-position.s
+++ test/ELF/global-offset-table-position.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t
-// RUN: ld.lld -shared %t -o %t2
+// RUN: ld.lld --hash-style=sysv -shared %t -o %t2
 // RUN: llvm-readobj -t %t2 | FileCheck %s
 // REQUIRES: x86
 
Index: test/ELF/global_offset_table_shared.s
===================================================================
--- test/ELF/global_offset_table_shared.s
+++ test/ELF/global_offset_table_shared.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t
-// RUN: ld.lld -shared %t -o %t2
+// RUN: ld.lld --hash-style=sysv -shared %t -o %t2
 // RUN: llvm-readobj -t %t2 | FileCheck %s
 .long _GLOBAL_OFFSET_TABLE_ - .
 
Index: test/ELF/gnu-ifunc-gotpcrel.s
===================================================================
--- test/ELF/gnu-ifunc-gotpcrel.s
+++ test/ELF/gnu-ifunc-gotpcrel.s
@@ -2,7 +2,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/gnu-ifunc-gotpcrel.s -o %t2.o
 # RUN: ld.lld -shared %t2.o -o %t2.so
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-# RUN: ld.lld %t.o %t2.so -o %t
+# RUN: ld.lld --hash-style=sysv %t.o %t2.so -o %t
 # RUN: llvm-readobj -dyn-relocations %t | FileCheck %s
 
 # CHECK:      Dynamic Relocations {
Index: test/ELF/gnu-ifunc-plt-i386.s
===================================================================
--- test/ELF/gnu-ifunc-plt-i386.s
+++ test/ELF/gnu-ifunc-plt-i386.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %S/Inputs/shared2-x86-64.s -o %t1.o
 // RUN: ld.lld %t1.o --shared -o %t.so
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t.o
-// RUN: ld.lld %t.so %t.o -o %tout
+// RUN: ld.lld --hash-style=sysv %t.so %t.o -o %tout
 // RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DISASM
 // RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT
 // RUN: llvm-readobj -r -dynamic-table %tout | FileCheck %s
Index: test/ELF/gnu-ifunc-plt.s
===================================================================
--- test/ELF/gnu-ifunc-plt.s
+++ test/ELF/gnu-ifunc-plt.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/shared2-x86-64.s -o %t1.o
 // RUN: ld.lld %t1.o --shared -o %t.so
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
-// RUN: ld.lld %t.so %t.o -o %tout
+// RUN: ld.lld --hash-style=sysv %t.so %t.o -o %tout
 // RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DISASM
 // RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT
 // RUN: llvm-readobj -r -dynamic-table %tout | FileCheck %s
Index: test/ELF/gnu-ifunc-shared.s
===================================================================
--- test/ELF/gnu-ifunc-shared.s
+++ test/ELF/gnu-ifunc-shared.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
-// RUN: ld.lld --shared -o %t.so %t.o
+// RUN: ld.lld --hash-style=sysv --shared -o %t.so %t.o
 // RUN: llvm-objdump -d %t.so | FileCheck %s --check-prefix=DISASM
 // RUN: llvm-readobj -r %t.so | FileCheck %s
 
Index: test/ELF/got-aarch64.s
===================================================================
--- test/ELF/got-aarch64.s
+++ test/ELF/got-aarch64.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=aarch64-unknown-linux %s -o %t.o
-// RUN: ld.lld -shared %t.o -o %t.so
+// RUN: ld.lld --hash-style=sysv -shared %t.o -o %t.so
 // RUN: llvm-readobj -s -r %t.so | FileCheck %s
 // RUN: llvm-objdump -d %t.so | FileCheck --check-prefix=DISASM %s
 // REQUIRES: aarch64
Index: test/ELF/got.s
===================================================================
--- test/ELF/got.s
+++ test/ELF/got.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
 // RUN: ld.lld -shared %t2.o -o %t2.so
-// RUN: ld.lld %t.o %t2.so -o %t
+// RUN: ld.lld --hash-style=sysv %t.o %t2.so -o %t
 // RUN: llvm-readobj -s -r %t | FileCheck %s
 // RUN: llvm-objdump -d %t | FileCheck --check-prefix=DISASM %s
 // REQUIRES: x86
Index: test/ELF/gotpc-relax-nopic.s
===================================================================
--- test/ELF/gotpc-relax-nopic.s
+++ test/ELF/gotpc-relax-nopic.s
@@ -1,6 +1,6 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -relax-relocations -triple=x86_64-unknown-linux %s -o %t.o
-# RUN: ld.lld %t.o -o %t1
+# RUN: ld.lld --hash-style=sysv %t.o -o %t1
 # RUN: llvm-readobj -symbols -r %t1 | FileCheck --check-prefix=SYMRELOC %s
 # RUN: llvm-objdump -d %t1 | FileCheck --check-prefix=DISASM %s
 
@@ -25,7 +25,7 @@
 # DISASM-NEXT:   201031: {{.*}} xorq  $2105344, %r8
 # DISASM-NEXT:   201038: {{.*}} testq $2105344, %r15
 
-# RUN: ld.lld -shared %t.o -o %t2
+# RUN: ld.lld --hash-style=sysv -shared %t.o -o %t2
 # RUN: llvm-readobj -s -r -d %t2 | FileCheck --check-prefix=SEC-PIC    %s
 # RUN: llvm-objdump -d %t2 | FileCheck --check-prefix=DISASM-PIC %s
 # SEC-PIC:      Section {
Index: test/ELF/gotpc-relax-und-dso.s
===================================================================
--- test/ELF/gotpc-relax-und-dso.s
+++ test/ELF/gotpc-relax-und-dso.s
@@ -2,7 +2,7 @@
 # RUN: llvm-mc -filetype=obj -relax-relocations -triple=x86_64-unknown-linux %s -o %t.o
 # RUN: llvm-mc -filetype=obj -relax-relocations -triple=x86_64-pc-linux %S/Inputs/gotpc-relax-und-dso.s -o %tdso.o
 # RUN: ld.lld -shared %tdso.o -o %t.so
-# RUN: ld.lld -shared %t.o %t.so -o %tout
+# RUN: ld.lld --hash-style=sysv -shared %t.o %t.so -o %tout
 # RUN: llvm-readobj -r -s %tout | FileCheck --check-prefix=RELOC %s
 # RUN: llvm-objdump -d %tout | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/gotpcrelx.s
===================================================================
--- test/ELF/gotpcrelx.s
+++ test/ELF/gotpcrelx.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -relax-relocations -triple x86_64-pc-linux-gnu \
 // RUN: %s -o %t.o
 // RUN: llvm-readobj -r %t.o | FileCheck --check-prefix=RELS %s
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-readobj -s -r %t.so | FileCheck %s
 
 movq foo@GOTPCREL(%rip), %rax
Index: test/ELF/i386-got-and-copy.s
===================================================================
--- test/ELF/i386-got-and-copy.s
+++ test/ELF/i386-got-and-copy.s
@@ -9,7 +9,7 @@
 # RUN:         %S/Inputs/copy-in-shared.s -o %t.so.o
 # RUN: llvm-mc -filetype=obj -triple=i386-pc-linux %s -o %t.o
 # RUN: ld.lld %t.so.o -shared -o %t.so
-# RUN: ld.lld %t.o %t.so -o %t.exe
+# RUN: ld.lld --hash-style=sysv %t.o %t.so -o %t.exe
 # RUN: llvm-readobj -r %t.exe | FileCheck %s
 
 # CHECK:      Relocations [
Index: test/ELF/i386-gotoff-shared.s
===================================================================
--- test/ELF/i386-gotoff-shared.s
+++ test/ELF/i386-gotoff-shared.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t.o
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-readobj -s %t.so | FileCheck %s
 // RUN: llvm-objdump -d %t.so | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/i386-gotpc-dynamic.s
===================================================================
--- test/ELF/i386-gotpc-dynamic.s
+++ test/ELF/i386-gotpc-dynamic.s
@@ -1,6 +1,6 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t.o
-# RUN: ld.lld %t.o -o %t.so -shared
+# RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 # RUN: llvm-readobj -s %t.so | FileCheck %s
 # RUN: llvm-objdump -d %t.so | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/i386-gotpc.s
===================================================================
--- test/ELF/i386-gotpc.s
+++ test/ELF/i386-gotpc.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t.o
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-readobj -s %t.so | FileCheck %s
 // RUN: llvm-objdump -d %t.so | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/i386-tls-ie-shared.s
===================================================================
--- test/ELF/i386-tls-ie-shared.s
+++ test/ELF/i386-tls-ie-shared.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %p/Inputs/tls-opt-iele-i686-nopic.s -o %tso.o
 // RUN: ld.lld -shared %tso.o -o %tso
-// RUN: ld.lld -shared %t.o %tso -o %t1
+// RUN: ld.lld --hash-style=sysv -shared %t.o %tso -o %t1
 // RUN: llvm-readobj -s -r -d %t1 | FileCheck --check-prefix=GOTRELSHARED %s
 // RUN: llvm-objdump -d %t1 | FileCheck --check-prefix=DISASMSHARED %s
 
Index: test/ELF/icf-symbol-type.s
===================================================================
--- test/ELF/icf-symbol-type.s
+++ test/ELF/icf-symbol-type.s
@@ -1,7 +1,7 @@
 # REQUIRES: x86
 
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-# RUN: ld.lld %t.o -o %t --icf=all -shared
+# RUN: ld.lld --hash-style=sysv %t.o -o %t --icf=all -shared
 # RUN: llvm-readelf --dyn-symbols %t | FileCheck %s
 
 # We used to mark bar as absolute.
Index: test/ELF/linkerscript/data-segment-relro.s
===================================================================
--- test/ELF/linkerscript/data-segment-relro.s
+++ test/ELF/linkerscript/data-segment-relro.s
@@ -19,9 +19,9 @@
 
 ## With relro or without DATA_SEGMENT_RELRO_END just aligns to
 ## page boundary.
-# RUN: ld.lld -z norelro %t1.o %t2.so --script %t.script -o %t
+# RUN: ld.lld --hash-style=sysv -z norelro %t1.o %t2.so --script %t.script -o %t
 # RUN: llvm-readobj -s %t | FileCheck %s
-# RUN: ld.lld -z relro %t1.o %t2.so --script %t.script -o %t2
+# RUN: ld.lld --hash-style=sysv -z relro %t1.o %t2.so --script %t.script -o %t2
 # RUN: llvm-readobj -s %t2 | FileCheck %s
 
 # CHECK:       Section {
Index: test/ELF/linkerscript/emit-reloc.s
===================================================================
--- test/ELF/linkerscript/emit-reloc.s
+++ test/ELF/linkerscript/emit-reloc.s
@@ -1,7 +1,7 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
 # RUN: echo "SECTIONS { .rela.dyn : { *(.rela.data) } }" > %t.script
-# RUN: ld.lld -T %t.script --emit-relocs %t.o -o %t.so -shared
+# RUN: ld.lld --hash-style=sysv -T %t.script --emit-relocs %t.o -o %t.so -shared
 # RUN: llvm-readobj -r %t.so | FileCheck %s
 
 .data
Index: test/ELF/linkerscript/extend-pt-load.s
===================================================================
--- test/ELF/linkerscript/extend-pt-load.s
+++ test/ELF/linkerscript/extend-pt-load.s
@@ -15,7 +15,7 @@
 # RUN:  . = ALIGN(0x1000); \
 # RUN:  .data.rel.ro : { *(.data.rel.ro) } \
 # RUN: }" > %t.script
-# RUN: ld.lld -o %t1 --script %t.script %t.o -shared
+# RUN: ld.lld --hash-style=sysv -o %t1 --script %t.script %t.o -shared
 # RUN: llvm-readobj --elf-output-style=GNU -l -s %t1 | FileCheck --check-prefix=CHECK1 %s
 
 # CHECK1:      .text        PROGBITS 00000000000001bc 0001bc 000001 00 AX
@@ -37,7 +37,7 @@
 # RUN:  bar : { HIDDEN(bar_sym = .); } \
 # RUN:  .data.rel.ro : { *(.data.rel.ro) } \
 # RUN: }" > %t.script
-# RUN: ld.lld -o %t2 --script %t.script %t.o -shared
+# RUN: ld.lld --hash-style=sysv -o %t2 --script %t.script %t.o -shared
 # RUN: llvm-readobj --elf-output-style=GNU -l -s %t2 | FileCheck --check-prefix=CHECK2 %s
 
 # CHECK2:      .text        PROGBITS 00000000000001bc 0001bc 000001 00 AX
@@ -60,7 +60,7 @@
 # RUN:  HIDDEN(bar_sym = .); \
 # RUN:  .data.rel.ro : { *(.data.rel.ro) } \
 # RUN: }" > %t.script
-# RUN: ld.lld -o %t3 --script %t.script %t.o -shared
+# RUN: ld.lld --hash-style=sysv -o %t3 --script %t.script %t.o -shared
 # RUN: llvm-readobj --elf-output-style=GNU -l -s %t3 | FileCheck --check-prefix=CHECK1 %s
 
 nop
Index: test/ELF/linkerscript/header-addr.s
===================================================================
--- test/ELF/linkerscript/header-addr.s
+++ test/ELF/linkerscript/header-addr.s
@@ -5,7 +5,7 @@
 # RUN:       . = 0x2000 + SIZEOF_HEADERS; \
 # RUN:       .text : {*(.text)} :all \
 # RUN:     }" > %t.script
-# RUN: ld.lld -o %t.so --script %t.script %t.o -shared
+# RUN: ld.lld --hash-style=sysv -o %t.so --script %t.script %t.o -shared
 # RUN: llvm-readobj -program-headers %t.so | FileCheck %s
 
 # CHECK:      ProgramHeaders [
@@ -25,7 +25,7 @@
 # CHECK-NEXT:   }
 # CHECK-NEXT: ]
 
-# RUN: ld.lld -o %t2.so --script %t.script %t.o -shared -z max-page-size=0x2000
+# RUN: ld.lld --hash-style=sysv -o %t2.so --script %t.script %t.o -shared -z max-page-size=0x2000
 # RUN: llvm-readobj -program-headers %t2.so \
 # RUN:   | FileCheck --check-prefix=MAXPAGE %s
 
Index: test/ELF/linkerscript/implicit-program-header.s
===================================================================
--- test/ELF/linkerscript/implicit-program-header.s
+++ test/ELF/linkerscript/implicit-program-header.s
@@ -1,6 +1,6 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-# RUN: ld.lld -o %t1 --script %S/Inputs/implicit-program-header.script  \
+# RUN: ld.lld --hash-style=sysv -o %t1 --script %S/Inputs/implicit-program-header.script  \
 # RUN:   %t.o -shared
 # RUN: llvm-readobj -elf-output-style=GNU -l %t1 | FileCheck %s
 
Index: test/ELF/linkerscript/no-space.s
===================================================================
--- test/ELF/linkerscript/no-space.s
+++ test/ELF/linkerscript/no-space.s
@@ -2,11 +2,11 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
 
 # RUN: echo "SECTIONS {foo 0 : {*(foo*)} }" > %t.script
-# RUN: ld.lld -o %t --script %t.script %t.o -shared
+# RUN: ld.lld --hash-style=sysv -o %t --script %t.script %t.o -shared
 # RUN: llvm-readobj -elf-output-style=GNU -l %t | FileCheck %s
 
 # RUN: echo "SECTIONS {foo : {*(foo*)} }" > %t.script
-# RUN: ld.lld -o %t --script %t.script %t.o -shared
+# RUN: ld.lld --hash-style=sysv -o %t --script %t.script %t.o -shared
 # RUN: llvm-readobj -elf-output-style=GNU -l %t | FileCheck %s
 
 # There is not enough address space available for the header, so just start the PT_LOAD
Index: test/ELF/linkerscript/non-alloc.s
===================================================================
--- test/ELF/linkerscript/non-alloc.s
+++ test/ELF/linkerscript/non-alloc.s
@@ -2,7 +2,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t
 
 # RUN: echo "SECTIONS { .foo 0 : {*(foo)} }" > %t.script
-# RUN: ld.lld -o %t1 --script %t.script %t -shared
+# RUN: ld.lld --hash-style=sysv -o %t1 --script %t.script %t -shared
 # RUN: llvm-readobj -elf-output-style=GNU -s -l %t1 | FileCheck %s
 
 # Test that we create all necessary PT_LOAD. We use to stop at the first
Index: test/ELF/linkerscript/orphan-report.s
===================================================================
--- test/ELF/linkerscript/orphan-report.s
+++ test/ELF/linkerscript/orphan-report.s
@@ -1,7 +1,7 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
 # RUN: echo "SECTIONS { .text : { *(.text.1) } }" > %t.script
-# RUN: ld.lld -shared -o %t.out --script %t.script %t.o --verbose | FileCheck %s
+# RUN: ld.lld --hash-style=sysv -shared -o %t.out --script %t.script %t.o --verbose | FileCheck %s
 
 # CHECK:      {{.*}}.o:(.text) is being placed in '.text'
 # CHECK-NEXT: {{.*}}.o:(.text.2) is being placed in '.text'
Index: test/ELF/linkerscript/out-of-order.s
===================================================================
--- test/ELF/linkerscript/out-of-order.s
+++ test/ELF/linkerscript/out-of-order.s
@@ -1,7 +1,7 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-linux %s -o %t.o
 # RUN: echo "SECTIONS { .data 0x4000 : { *(.data) } .text 0x2000 : { *(.text) } }" > %t.script
-# RUN: ld.lld -o %t.so --script %t.script %t.o -shared
+# RUN: ld.lld --hash-style=sysv -o %t.so --script %t.script %t.o -shared
 # RUN: llvm-objdump -section-headers %t.so | FileCheck %s
 
 # CHECK:      Sections:
Index: test/ELF/linkerscript/repsection-symbol.s
===================================================================
--- test/ELF/linkerscript/repsection-symbol.s
+++ test/ELF/linkerscript/repsection-symbol.s
@@ -6,7 +6,7 @@
 # RUN:   .text : { *(.text) } \
 # RUN:   .foo : {foo1 = .;  *(.foo.*) foo2 = .;  *(.bar) foo3 = .;} \
 # RUN: }" > %t.script
-# RUN: ld.lld -o %t1 --script %t.script %t -shared
+# RUN: ld.lld --hash-style=sysv -o %t1 --script %t.script %t -shared
 # RUN: llvm-readobj -t %t1 | FileCheck %s
 
 # CHECK:      Name: foo1
Index: test/ELF/linkerscript/sections-sort.s
===================================================================
--- test/ELF/linkerscript/sections-sort.s
+++ test/ELF/linkerscript/sections-sort.s
@@ -2,7 +2,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
 
 # RUN: echo "SECTIONS { .text : {*(.text)} foo : {*(foo)}}" > %t.script
-# RUN: ld.lld -o %t --script %t.script %t.o -shared
+# RUN: ld.lld --hash-style=sysv -o %t --script %t.script %t.o -shared
 # RUN: llvm-objdump --section-headers %t | FileCheck  %s
 
 # Test the section order. This is a case where at least with libstdc++'s
Index: test/ELF/linkerscript/segment-start.s
===================================================================
--- test/ELF/linkerscript/segment-start.s
+++ test/ELF/linkerscript/segment-start.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-// RUN: ld.lld %t.o %S/Inputs/segment-start.script -shared -o %t.so
+// RUN: ld.lld --hash-style=sysv %t.o %S/Inputs/segment-start.script -shared -o %t.so
 // RUN: llvm-readobj --dyn-symbols %t.so | FileCheck %s
 
 // CHECK:      Name: foobar1
Index: test/ELF/linkerscript/sort-non-script.s
===================================================================
--- test/ELF/linkerscript/sort-non-script.s
+++ test/ELF/linkerscript/sort-non-script.s
@@ -2,7 +2,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t
 
 # RUN: echo "SECTIONS { foo : {*(foo)} }" > %t.script
-# RUN: ld.lld -o %t1 --script %t.script %t -shared
+# RUN: ld.lld --hash-style=sysv -o %t1 --script %t.script %t -shared
 # RUN: llvm-readobj -elf-output-style=GNU -s %t1 | FileCheck %s
 
 # CHECK:      .text    {{.*}}   AX
Index: test/ELF/local-got-pie.s
===================================================================
--- test/ELF/local-got-pie.s
+++ test/ELF/local-got-pie.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
-// RUN: ld.lld %t.o -o %t -pie
+// RUN: ld.lld --hash-style=sysv %t.o -o %t -pie
 // RUN: llvm-readobj -s -r -d %t | FileCheck %s
 // RUN: llvm-objdump -d %t | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/local-got-shared.s
===================================================================
--- test/ELF/local-got-shared.s
+++ test/ELF/local-got-shared.s
@@ -1,5 +1,5 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
-// RUN: ld.lld %t.o -o %t -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t -shared
 // RUN: llvm-readobj -s -r -d %t | FileCheck %s
 // RUN: llvm-objdump -d %t | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/local-got.s
===================================================================
--- test/ELF/local-got.s
+++ test/ELF/local-got.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
 // RUN: ld.lld -shared %t2.o -o %t2.so
-// RUN: ld.lld %t.o %t2.so -o %t
+// RUN: ld.lld --hash-style=sysv %t.o %t2.so -o %t
 // RUN: llvm-readobj -s -r -section-data %t | FileCheck %s
 // RUN: llvm-objdump -d %t | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/noplt-pie.s
===================================================================
--- test/ELF/noplt-pie.s
+++ test/ELF/noplt-pie.s
@@ -2,7 +2,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
 # RUN: ld.lld -shared %t2.o -o %t2.so
-# RUN: ld.lld %t1.o %t2.so -o %t.out
+# RUN: ld.lld --hash-style=sysv %t1.o %t2.so -o %t.out
 # RUN: llvm-readobj -s -r %t.out | FileCheck %s
 
 # CHECK: Section {
Index: test/ELF/pie-weak.s
===================================================================
--- test/ELF/pie-weak.s
+++ test/ELF/pie-weak.s
@@ -1,6 +1,6 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -relax-relocations=false -triple=x86_64-unknown-linux %s -o %t.o
-# RUN: ld.lld -pie %t.o -o %t
+# RUN: ld.lld --hash-style=sysv -pie %t.o -o %t
 # RUN: llvm-readobj -r %t | FileCheck --check-prefix=RELOCS %s
 # RUN: llvm-objdump -d %t | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/pr34660.s
===================================================================
--- test/ELF/pr34660.s
+++ test/ELF/pr34660.s
@@ -1,7 +1,7 @@
 # REQUIRES: aarch64
 
 # RUN: llvm-mc -filetype=obj -triple=aarch64-linux-none %s -o %t.o
-# RUN: ld.lld -shared %t.o -o %t
+# RUN: ld.lld --hash-style=sysv -shared %t.o -o %t
 # RUN: llvm-objdump %t -d | FileCheck %s --check-prefix=DISASM
 # RUN: llvm-readobj -elf-output-style=GNU %t -t | FileCheck %s --check-prefix=SYM
 
Index: test/ELF/relocation-copy-alias.s
===================================================================
--- test/ELF/relocation-copy-alias.s
+++ test/ELF/relocation-copy-alias.s
@@ -1,8 +1,8 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/relocation-copy-alias.s -o %t2.o
-// RUN: ld.lld -shared %t2.o -o %t.so
-// RUN: ld.lld %t.o %t.so -o %t3
+// RUN: ld.lld --hash-style=sysv -shared %t2.o -o %t.so
+// RUN: ld.lld --hash-style=sysv %t.o %t.so -o %t3
 // RUN: llvm-readobj --dyn-symbols -r --expand-relocs %t3 | FileCheck %s
 
 .global _start
Index: test/ELF/relocation-copy-align-common.s
===================================================================
--- test/ELF/relocation-copy-align-common.s
+++ test/ELF/relocation-copy-align-common.s
@@ -3,7 +3,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux \
 # RUN:   %p/Inputs/relocation-copy-align-common.s -o %t2.o
 # RUN: ld.lld -shared %t2.o -o %t.so
-# RUN: ld.lld %t.o %t.so -o %t3
+# RUN: ld.lld --hash-style=sysv %t.o %t.so -o %t3
 # RUN: llvm-readobj -s -r --expand-relocs %t3 | FileCheck %s
 
 # CHECK:      Section {
Index: test/ELF/relocation-copy-flags.s
===================================================================
--- test/ELF/relocation-copy-flags.s
+++ test/ELF/relocation-copy-flags.s
@@ -3,7 +3,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/relocation-copy.s -o %t2.o
 // RUN: ld.lld %t2.o -o %t2.so -shared
-// RUN: ld.lld %t.o %t2.so -o %t.exe
+// RUN: ld.lld --hash-style=sysv %t.o %t2.so -o %t.exe
 // RUN: llvm-readobj -s -section-data -r %t.exe | FileCheck %s
 
         .global _start
Index: test/ELF/relocation-copy-relro.s
===================================================================
--- test/ELF/relocation-copy-relro.s
+++ test/ELF/relocation-copy-relro.s
@@ -2,7 +2,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/relocation-copy-relro.s -o %t2.o
 // RUN: ld.lld -shared %t2.o -o %t.so
-// RUN: ld.lld %t.o %t.so -o %t3
+// RUN: ld.lld --hash-style=sysv %t.o %t.so -o %t3
 // RUN: llvm-readobj -program-headers -s -r %t3 | FileCheck %s
 
 // CHECK:        Name: .bss.rel.ro (48)
Index: test/ELF/relocation-i686.s
===================================================================
--- test/ELF/relocation-i686.s
+++ test/ELF/relocation-i686.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t
 // RUN: llvm-mc -filetype=obj -triple=i686-unknown-linux %p/Inputs/shared.s -o %t2.o
 // RUN: ld.lld -shared %t2.o -o %t2.so
-// RUN: ld.lld %t %t2.so -o %t2
+// RUN: ld.lld --hash-style=sysv %t %t2.so -o %t2
 // RUN: llvm-readobj -s %t2 | FileCheck --check-prefix=ADDR %s
 // RUN: llvm-objdump -d %t2 | FileCheck %s
 // REQUIRES: x86
Index: test/ELF/relocation.s
===================================================================
--- test/ELF/relocation.s
+++ test/ELF/relocation.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/shared.s -o %t2
 // RUN: ld.lld %t2 -o %t2.so -shared
-// RUN: ld.lld %t %t2.so -o %t3
+// RUN: ld.lld --hash-style=sysv %t %t2.so -o %t3
 // RUN: llvm-readobj -s  %t3 | FileCheck --check-prefix=SEC %s
 // RUN: llvm-objdump -s -d %t3 | FileCheck %s
 // REQUIRES: x86
Index: test/ELF/relro-omagic.s
===================================================================
--- test/ELF/relro-omagic.s
+++ test/ELF/relro-omagic.s
@@ -1,7 +1,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
 # RUN: ld.lld -shared %t2.o -o %t2.so -soname relro-omagic.s.tmp2.so
-# RUN: ld.lld -N %t.o %t2.so -o %t
+# RUN: ld.lld --hash-style=sysv -N %t.o %t2.so -o %t
 # RUN: llvm-objdump -section-headers %t | FileCheck --check-prefix=NORELRO %s
 # RUN: llvm-readobj --program-headers %t | FileCheck --check-prefix=NOPHDRS %s
 
Index: test/ELF/resolution-end.s
===================================================================
--- test/ELF/resolution-end.s
+++ test/ELF/resolution-end.s
@@ -1,7 +1,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/resolution-end.s -o %t2.o
 # RUN: ld.lld -shared -o %t2.so %t2.o
-# RUN: ld.lld %t1.o %t2.so -o %t
+# RUN: ld.lld --hash-style=sysv %t1.o %t2.so -o %t
 # RUN: llvm-readobj -t -s -section-data  %t | FileCheck %s
 # REQUIRES: x86
 
Index: test/ELF/retain-symbols-file.s
===================================================================
--- test/ELF/retain-symbols-file.s
+++ test/ELF/retain-symbols-file.s
@@ -2,11 +2,11 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t
 # RUN: echo "bar" > %t_retain.txt
 # RUN: echo "foo" >> %t_retain.txt
-# RUN: ld.lld -shared --retain-symbols-file=%t_retain.txt %t -o %t2
+# RUN: ld.lld --hash-style=sysv -shared --retain-symbols-file=%t_retain.txt %t -o %t2
 # RUN: llvm-readobj --dyn-symbols %t2 | FileCheck %s
 
 ## Check separate form.
-# RUN: ld.lld -shared --retain-symbols-file %t_retain.txt %t -o %t2
+# RUN: ld.lld --hash-style=sysv -shared --retain-symbols-file %t_retain.txt %t -o %t2
 # RUN: llvm-readobj --dyn-symbols %t2 | FileCheck %s
 
 # CHECK:      DynamicSymbols [
Index: test/ELF/shared.s
===================================================================
--- test/ELF/shared.s
+++ test/ELF/shared.s
@@ -1,10 +1,10 @@
 // RUN: llvm-mc -filetype=obj -triple=i686-unknown-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=i686-unknown-linux %p/Inputs/shared.s -o %t2.o
-// RUN: ld.lld -shared %t2.o -o %t2.so
+// RUN: ld.lld --hash-style=sysv -shared %t2.o -o %t2.so
 // RUN: llvm-readobj -s %t2.so | FileCheck --check-prefix=SO %s
-// RUN: ld.lld -dynamic-linker /lib64/ld-linux-x86-64.so.2 -rpath foo -rpath bar --export-dynamic %t.o %t2.so -o %t
+// RUN: ld.lld --hash-style=sysv -dynamic-linker /lib64/ld-linux-x86-64.so.2 -rpath foo -rpath bar --export-dynamic %t.o %t2.so -o %t
 // RUN: llvm-readobj --program-headers --dynamic-table -t -s -dyn-symbols -section-data -hash-table %t | FileCheck %s
-// RUN: ld.lld %t.o %t2.so %t2.so -o %t2
+// RUN: ld.lld --hash-style=sysv %t.o %t2.so %t2.so -o %t2
 // RUN: llvm-readobj -dyn-symbols %t2 | FileCheck --check-prefix=DONT_EXPORT %s
 // REQUIRES: x86
 
Index: test/ELF/sort-norosegment.s
===================================================================
--- test/ELF/sort-norosegment.s
+++ test/ELF/sort-norosegment.s
@@ -1,7 +1,7 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t
 
-# RUN: ld.lld -no-rosegment -o %t1  %t -shared
+# RUN: ld.lld --hash-style=sysv -no-rosegment -o %t1  %t -shared
 # RUN: llvm-readobj -elf-output-style=GNU -s %t1 | FileCheck %s
 
 # CHECK:      .text    {{.*}}   AX
Index: test/ELF/startstop.s
===================================================================
--- test/ELF/startstop.s
+++ test/ELF/startstop.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
-// RUN: ld.lld %t -o %tout -shared
+// RUN: ld.lld --hash-style=sysv %t -o %tout -shared
 // RUN: llvm-objdump -d %tout | FileCheck -check-prefix=DISASM %s
 // RUN: llvm-readobj -symbols -r %tout | FileCheck -check-prefix=SYMBOL %s
 
Index: test/ELF/synthetic-got.s
===================================================================
--- test/ELF/synthetic-got.s
+++ test/ELF/synthetic-got.s
@@ -1,7 +1,7 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
 # RUN: echo "SECTIONS { }" > %t0.script
-# RUN: ld.lld -shared %t.o -o %t0.out --script %t0.script
+# RUN: ld.lld --hash-style=sysv -shared %t.o -o %t0.out --script %t0.script
 # RUN: llvm-objdump -section-headers %t0.out | FileCheck %s --check-prefix=GOT
 # RUN: llvm-objdump -s -section=.got -section=.got.plt %t0.out \
 # RUN:   | FileCheck %s --check-prefix=GOTDATA
@@ -16,7 +16,7 @@
 # GOTDATA-NEXT:  01d0 00000000 00000000
 
 # RUN: echo "SECTIONS { .mygot : { *(.got) *(.got.plt) } }" > %t1.script
-# RUN: ld.lld -shared %t.o -o %t1.out --script %t1.script
+# RUN: ld.lld --hash-style=sysv -shared %t.o -o %t1.out --script %t1.script
 # RUN: llvm-objdump -section-headers %t1.out | FileCheck %s --check-prefix=MYGOT
 # RUN: llvm-objdump -s -section=.mygot %t1.out | FileCheck %s --check-prefix=MYGOTDATA
 
Index: test/ELF/tls-dynamic-i686.s
===================================================================
--- test/ELF/tls-dynamic-i686.s
+++ test/ELF/tls-dynamic-i686.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t
-// RUN: ld.lld -shared %t -o %tout
+// RUN: ld.lld --hash-style=sysv -shared %t -o %tout
 // RUN: llvm-readobj -sections -relocations %tout | FileCheck %s
 // RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DIS
 
Index: test/ELF/tls-dynamic.s
===================================================================
--- test/ELF/tls-dynamic.s
+++ test/ELF/tls-dynamic.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
-// RUN: ld.lld -shared %t -o %tout
+// RUN: ld.lld --hash-style=sysv -shared %t -o %tout
 // RUN: llvm-readobj -sections -relocations %tout | FileCheck %s
 // RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DIS
 
Index: test/ELF/tls-got.s
===================================================================
--- test/ELF/tls-got.s
+++ test/ELF/tls-got.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/tls-got.s -o %t2.o
 // RUN: ld.lld -shared %t2.o -o %t2.so
-// RUN: ld.lld -e main %t1.o %t2.so -o %t3
+// RUN: ld.lld --hash-style=sysv -e main %t1.o %t2.so -o %t3
 // RUN: llvm-readobj -s -r %t3 | FileCheck %s
 // RUN: llvm-objdump -d %t3 | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/tls-i686.s
===================================================================
--- test/ELF/tls-i686.s
+++ test/ELF/tls-i686.s
@@ -1,7 +1,7 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t
 // RUN: ld.lld %t -o %tout
-// RUN: ld.lld %t -shared -o %tsharedout
+// RUN: ld.lld --hash-style=sysv %t -shared -o %tsharedout
 // RUN: llvm-objdump -d %tout | FileCheck %s --check-prefix=DIS
 // RUN: llvm-readobj -r %tout | FileCheck %s --check-prefix=RELOC
 // RUN: llvm-objdump -d %tsharedout | FileCheck %s --check-prefix=DISSHARED
Index: test/ELF/tls-initial-exec-local.s
===================================================================
--- test/ELF/tls-initial-exec-local.s
+++ test/ELF/tls-initial-exec-local.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-// RUN: ld.lld -shared %t.o -o %t
+// RUN: ld.lld --hash-style=sysv -shared %t.o -o %t
 // RUN: llvm-readobj -r -s %t | FileCheck %s
 // RUN: llvm-objdump -d %t | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/tls-opt-gdie.s
===================================================================
--- test/ELF/tls-opt-gdie.s
+++ test/ELF/tls-opt-gdie.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/tls-opt-gdie.s -o %tso.o
 // RUN: ld.lld -shared %tso.o -o %t.so
-// RUN: ld.lld %t.o %t.so -o %t1
+// RUN: ld.lld --hash-style=sysv %t.o %t.so -o %t1
 // RUN: llvm-readobj -s -r %t1 | FileCheck --check-prefix=RELOC %s
 // RUN: llvm-objdump -d %t1 | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/tls-opt-gdiele-i686.s
===================================================================
--- test/ELF/tls-opt-gdiele-i686.s
+++ test/ELF/tls-opt-gdiele-i686.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %p/Inputs/tls-opt-gdiele-i686.s -o %tso.o
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t.o
 // RUN: ld.lld -shared %tso.o -o %tso
-// RUN: ld.lld %t.o %tso -o %tout
+// RUN: ld.lld --hash-style=sysv %t.o %tso -o %tout
 // RUN: llvm-readobj -r %tout | FileCheck --check-prefix=NORELOC %s
 // RUN: llvm-objdump -d %tout | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/tls-opt-iele-i686-nopic.s
===================================================================
--- test/ELF/tls-opt-iele-i686-nopic.s
+++ test/ELF/tls-opt-iele-i686-nopic.s
@@ -1,7 +1,7 @@
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t.o
 // RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %p/Inputs/tls-opt-iele-i686-nopic.s -o %tso.o
 // RUN: ld.lld -shared %tso.o -o %tso
-// RUN: ld.lld %t.o %tso -o %t1
+// RUN: ld.lld --hash-style=sysv %t.o %tso -o %t1
 // RUN: llvm-readobj -s -r %t1 | FileCheck --check-prefix=GOTREL %s
 // RUN: llvm-objdump -d %t1 | FileCheck --check-prefix=DISASM %s
 
Index: test/ELF/tls-two-relocs.s
===================================================================
--- test/ELF/tls-two-relocs.s
+++ test/ELF/tls-two-relocs.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
-// RUN: ld.lld %t -o %tout -shared
+// RUN: ld.lld --hash-style=sysv %t -o %tout -shared
 // RUN: llvm-readobj -r %tout | FileCheck %s
 
  data16
Index: test/ELF/verdef-defaultver.s
===================================================================
--- test/ELF/verdef-defaultver.s
+++ test/ELF/verdef-defaultver.s
@@ -3,7 +3,7 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/verdef-defaultver.s -o %t1
 # RUN: echo "V1 { global: a; local: *; };" > %t.script
 # RUN: echo "V2 { global: b; c; } V1;" >> %t.script
-# RUN: ld.lld -shared -soname shared %t1 --version-script %t.script -o %t.so
+# RUN: ld.lld --hash-style=sysv -shared -soname shared %t1 --version-script %t.script -o %t.so
 # RUN: llvm-readobj -V -dyn-symbols %t.so | FileCheck --check-prefix=DSO %s
 
 # DSO:      DynamicSymbols [
@@ -107,7 +107,7 @@
 
 ## Check that we can link against DSO produced.
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t2
-# RUN: ld.lld %t2 %t.so -o %t3
+# RUN: ld.lld --hash-style=sysv %t2 %t.so -o %t3
 # RUN: llvm-readobj -V -dyn-symbols %t3 | FileCheck --check-prefix=EXE %s
 
 # EXE:      DynamicSymbols [
Index: test/ELF/verdef.s
===================================================================
--- test/ELF/verdef.s
+++ test/ELF/verdef.s
@@ -3,7 +3,7 @@
 # RUN: echo "LIBSAMPLE_1.0 { global: a; local: *; };" > %t.script
 # RUN: echo "LIBSAMPLE_2.0 { global: b; local: *; };" >> %t.script
 # RUN: echo "LIBSAMPLE_3.0 { global: c; local: *; };" >> %t.script
-# RUN: ld.lld --version-script %t.script -shared -soname shared %t.o -o %t.so
+# RUN: ld.lld --hash-style=sysv --version-script %t.script -shared -soname shared %t.o -o %t.so
 # RUN: llvm-readobj -V -dyn-symbols %t.so | FileCheck --check-prefix=DSO %s
 
 # DSO:        Version symbols {
@@ -65,7 +65,7 @@
 
 ## Check that we can link agains DSO we produced.
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %S/Inputs/verdef.s -o %tmain.o
-# RUN: ld.lld %tmain.o %t.so -o %tout
+# RUN: ld.lld --hash-style=sysv %tmain.o %t.so -o %tout
 # RUN: llvm-readobj -V %tout | FileCheck --check-prefix=MAIN %s
 
 # MAIN:      Version symbols {
@@ -100,7 +100,7 @@
 # RUN: echo "LIBSAMPLE_2.0 { global: b; local: *; };" >> %t.script
 # RUN: echo "LIBSAMPLE_3.0 { global: c; local: *; };" >> %t.script
 # RUN: echo "}" >> %t.script
-# RUN: ld.lld --script %t.script -shared -soname shared %t.o -o %t2.so
+# RUN: ld.lld --hash-style=sysv --script %t.script -shared -soname shared %t.o -o %t2.so
 # RUN: llvm-readobj -V -dyn-symbols %t2.so | FileCheck --check-prefix=DSO %s
 
 .globl a
Index: test/ELF/verneed.s
===================================================================
--- test/ELF/verneed.s
+++ test/ELF/verneed.s
@@ -1,6 +1,6 @@
 # REQUIRES: x86
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-# RUN: ld.lld %t.o %S/Inputs/verneed1.so %S/Inputs/verneed2.so -o %t
+# RUN: ld.lld --hash-style=sysv %t.o %S/Inputs/verneed1.so %S/Inputs/verneed2.so -o %t
 # RUN: llvm-readobj -V -sections -section-data -dyn-symbols -dynamic-table %t | FileCheck %s
 
 # CHECK:        Section {
Index: test/ELF/version-script-extern.s
===================================================================
--- test/ELF/version-script-extern.s
+++ test/ELF/version-script-extern.s
@@ -7,7 +7,7 @@
 # RUN: echo "LIBSAMPLE_2.0 { global:" >> %t.script
 # RUN: echo '  extern "C" { _Z3bari; };' >> %t.script
 # RUN: echo "};" >> %t.script
-# RUN: ld.lld --version-script %t.script -shared %t.o -o %t.so
+# RUN: ld.lld --hash-style=sysv --version-script %t.script -shared %t.o -o %t.so
 # RUN: llvm-readobj -V -dyn-symbols %t.so | FileCheck --check-prefix=DSO %s
 
 # DSO:      DynamicSymbols [
Index: test/ELF/version-script.s
===================================================================
--- test/ELF/version-script.s
+++ test/ELF/version-script.s
@@ -142,12 +142,12 @@
 # VERDSO-NEXT: ]
 
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
-# RUN: ld.lld -shared %t.o %t2.so -o %t.so
+# RUN: ld.lld --hash-style=sysv -shared %t.o %t2.so -o %t.so
 # RUN: llvm-readobj -dyn-symbols %t.so | FileCheck --check-prefix=ALL %s
 
 # RUN: echo "{ global: foo1; foo3; };" > %t2.script
 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
-# RUN: ld.lld --version-script %t2.script -shared %t.o %t2.so -o %t.so
+# RUN: ld.lld --hash-style=sysv --version-script %t2.script -shared %t.o %t2.so -o %t.so
 # RUN: llvm-readobj -dyn-symbols %t.so | FileCheck --check-prefix=ALL %s
 
 # ALL:      DynamicSymbols [
Index: test/ELF/x86-64-relax-got-abs.s
===================================================================
--- test/ELF/x86-64-relax-got-abs.s
+++ test/ELF/x86-64-relax-got-abs.s
@@ -1,7 +1,7 @@
 // REQUIRES: x86
 // RUN: llvm-mc -filetype=obj -relax-relocations -triple=x86_64-pc-linux %s \
 // RUN:   -o %t.o
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-objdump -d %t.so | FileCheck %s
 
 // We used to fail trying to relax this into a pc relocation to an absolute
Index: test/ELF/x86-64-tls-gd-local.s
===================================================================
--- test/ELF/x86-64-tls-gd-local.s
+++ test/ELF/x86-64-tls-gd-local.s
@@ -1,6 +1,6 @@
 // REQUIRES: x86
 // RUN: llvm-mc %s -o %t.o -filetype=obj -triple=x86_64-pc-linux
-// RUN: ld.lld %t.o -o %t.so -shared
+// RUN: ld.lld --hash-style=sysv %t.o -o %t.so -shared
 // RUN: llvm-readobj -r -s -section-data %t.so | FileCheck %s
 
         .byte   0x66