[llvm-bugs] [Bug 33825] New: clang boostrap fails at link time with TLS errors

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33825

            Bug ID: 33825
           Summary: clang boostrap fails at link time with TLS errors
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: Sparc
          Assignee: unassignedbugs at nondot.org
          Reporter: Fedor.Sergeev at oracle.com
                CC: llvm-bugs at lists.llvm.org

Attempt to (manually) bootstrap clang fails when trying to link tablegen:

[246/1342] Linking CXX executable bin/llvm-tblgen
FAILED: bin/llvm-tblgen
: && /export/home/fsergeev/LLVM/llvm-build/sparc-50/bin/clang++   -m64 -fPIC
-fvisibility-inlines-hidden -Werror=date-time -std=c++11 -Wall -W
-Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers
-pedantic -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor
-Wdelete-non-virtual-dtor -Wstring-conversion -fcolor-diagnostics
-ffunction-sections -fdata-sections -O3 -DNDEBUG  -m64 
-Wl,-R/export/home/fsergeev/LLVM/llvm-build/sparc-50/lib/sparcv9    -Wl,-z
-Wl,discard-unused=sections
utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/AsmMatcherEmitter.cpp.o <...cut
some stuff here..>  -o bin/llvm-tblgen  lib/libLLVMSupport.a
lib/libLLVMTableGen.a lib/libLLVMSupport.a -lrt -ldl -lcurses -lz -lm
lib/libLLVMDemangle.a && :
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
lib/libLLVMSupport.a(PrettyStackTrace.cpp.o): symbol _ZL20PrettyStackTraceHead:
value 0x3fffffffc00001 does not fit

] elfdump -r  ./lib/Support/CMakeFiles/LLVMSupport.dir/PrettyStackTrace.cpp.o 
| grep HIX22.*_ZL20PrettyStackTraceHead
    [4]  R_SPARC_TLS_LDO_HIX22    0x28 0x3fffff      0  .text._ZN4llvm
_ZL20PrettyStackTraceHead
    [2]  R_SPARC_TLS_LDO_HIX22    0x24 0x3fffff      0  .text._ZN4llvm
_ZL20PrettyStackTraceHead
    [2]  R_SPARC_TLS_LDO_HIX22    0x14 0x3fffff      0  .text._ZN4llvm
_ZL20PrettyStackTraceHead
    [2]  R_SPARC_TLS_LDO_HIX22    0x14 0x3fffff      0  .text._ZN4llvm
_ZL20PrettyStackTraceHead
    [4]  R_SPARC_TLS_LDO_HIX22    0x2c 0x3fffff      0  .text._ZN4llvm
_ZL20PrettyStackTraceHead
    [4]  R_SPARC_TLS_LDO_HIX22    0x2c 0x3fffff      0  .text._ZN4llvm
_ZL20PrettyStackTraceHead
    [4]  R_SPARC_TLS_LDO_HIX22    0x2c 0x3fffff      0  .text._ZN4llvm
_ZL20PrettyStackTraceHead
    [7]  R_SPARC_TLS_LDO_HIX22    0x64 0x3fffff      0  .text._ZN4llvm
_ZL20PrettyStackTraceHead
    [7]  R_SPARC_TLS_LDO_HIX22    0x64 0x3fffff      0  .text._ZN4llvm
_ZL20PrettyStackTraceHead
    [3]  R_SPARC_TLS_LDO_HIX22    0x20 0x3fffff      0  .text._ZL12Cra
_ZL20PrettyStackTraceHead

It appears that generation of TLS_LDO_HIX22 relocation for sparc is broken.

Reduced testcase:
] cat tls-hix.cc
static thread_local void* StackTraceHead = nullptr;

void* foo() {
  return StackTraceHead;
}

int main() {
  return !foo();
}
] bin/clang++ tls-hix.cc -std=c++11 -m64
ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file
/var/tmp/tls-hix-548455.o: symbol _ZL14StackTraceHead: value 0x3fffffffc00001
does not fit
clang-5.0: error: linker command failed with exit code 1 (use -v to see
invocation)
]

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