Index: ELF/SyntheticSections.cpp
===================================================================
--- ELF/SyntheticSections.cpp
+++ ELF/SyntheticSections.cpp
@@ -922,9 +922,17 @@
           continue;
         InX::RelaDyn->addReloc(Target->TlsModuleIndexRel, this, Offset, S);
       } else {
-        if (!P.first->IsPreemptible)
+        // When building a shared library we still need a dynamic relocation
+        // for the module index. Therefore only checking for
+        // S->IsPreemptible is not sufficient (this happens e.g. for
+        // thread-locals that have been marked as local through a linker script)
+        if (!S->IsPreemptible && !Config->Pic)
           continue;
         InX::RelaDyn->addReloc(Target->TlsModuleIndexRel, this, Offset, S);
+        // However, we can skip writing the TLS offset reloc for non-preemptible
+        // symbols since it is known even in shared libraries
+        if (!S->IsPreemptible)
+          continue;
         Offset += Config->Wordsize;
         InX::RelaDyn->addReloc(Target->TlsOffsetRel, this, Offset, S);
       }
@@ -1030,7 +1038,11 @@
       if (P.first == nullptr && !Config->Pic)
         Write(P.second, nullptr, 1);
       else if (P.first && !P.first->IsPreemptible) {
-        Write(P.second, nullptr, 1);
+        // If we are emitting PIC code with relocations we mustn't write
+        // anything to the GOT here. When using Elf_Rel relocations the value
+        // one will be treated as an addend and will cause crashes at runtime
+        if (!Config->Pic)
+          Write(P.second, nullptr, 1);
         Write(P.second + 1, P.first, -0x8000);
       }
     }
Index: test/ELF/mips-tls-64-pic-local-variable.s
===================================================================
--- /dev/null
+++ test/ELF/mips-tls-64-pic-local-variable.s
@@ -0,0 +1,79 @@
+# REQUIRES: mips
+# MIPS TLS variables that are marked as local by a version script were previously
+# writing values to the GOT that caused runtime crashes.
+# This was happending when linking jemalloc_tsd.c in FreeBSD libc
+
+# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-freebsd %s -o %t.o
+# RUN: echo "{ global: foo; local: *; };" > %t.script
+# RUN: ld.lld --version-script %t.script -shared %t.o -o %t.so
+# RUN: llvm-objdump --section=.got -s %t.so | FileCheck %s -check-prefix GOT
+# RUN: llvm-readobj -r %t.so | FileCheck %s -check-prefix RELOCS
+
+# GOT:        Contents of section .got:
+# GOT-NEXT:   20000 00000000 00000000 80000000 00000000
+# GOT-NEXT:   20010 00000000 00000000 00000000 00000000
+# GOT-NEXT:   20020 ffffffff ffff8000
+
+# RELOCS:      Section ({{.+}}) .rel.dyn {
+# RELOCS-NEXT:  0x20018 R_MIPS_TLS_DTPMOD64/R_MIPS_NONE/R_MIPS_NONE
+# RELOCS-NEXT: }
+
+# Test case generated using clang -mcpu=mips4 -target mips64-unknown-freebsd12.0 -fpic -O -G0 -EB -mabi=n64 -msoft-float -std=gnu99 -S %s -o %t.s
+# from the following source:
+#
+# _Thread_local int x;
+# int foo() { return x; }
+#
+        .text
+        .abicalls
+        .section        .mdebug.abi64,"",@progbits
+        .nan    legacy
+        .file   "mips64-thread-relocation.c"
+        .text
+        .globl  foo
+        .p2align        3
+        .type   foo,@function
+        .set    nomicromips
+        .set    nomips16
+        .ent    foo
+foo:
+        .frame  $fp,32,$ra
+        .mask   0x00000000,0
+        .fmask  0x00000000,0
+        .set    noreorder
+        .set    nomacro
+        .set    noat
+        daddiu  $sp, $sp, -32
+        sd      $ra, 24($sp)
+        sd      $fp, 16($sp)
+        sd      $gp, 8($sp)
+        move     $fp, $sp
+        lui     $1, %hi(%neg(%gp_rel(foo)))
+        daddu   $1, $1, $25
+        daddiu  $gp, $1, %lo(%neg(%gp_rel(foo)))
+        ld      $25, %call16(__tls_get_addr)($gp)
+        jalr    $25
+        daddiu  $4, $gp, %tlsgd(x)
+        lw      $2, 0($2)
+        move     $sp, $fp
+        ld      $gp, 8($sp)
+        ld      $fp, 16($sp)
+        ld      $ra, 24($sp)
+        jr      $ra
+        daddiu  $sp, $sp, 32
+        .set    at
+        .set    macro
+        .set    reorder
+        .end    foo
+.Lfunc_end0:
+        .size   foo, .Lfunc_end0-foo
+
+        .type   x,@object
+        .section        .tbss,"awT",@nobits
+        .globl  x
+        .p2align        2
+x:
+        .4byte  0
+        .size   x, 4
+
+