llvm-project/llvm
Chih-Hung Hsieh 1e859582d6 Implement target independent TLS compatible with glibc's emutls.c.
The 'common' section TLS is not implemented.
Current C/C++ TLS variables are not placed in common section.
DWARF debug info to get the address of TLS variables is not generated yet.

clang and driver changes in http://reviews.llvm.org/D10524

  Added -femulated-tls flag to select the emulated TLS model,
  which will be used for old targets like Android that do not
  support ELF TLS models.

Added TargetLowering::LowerToTLSEmulatedModel as a target-independent
function to convert a SDNode of TLS variable address to a function call
to __emutls_get_address.

Added into lib/Target/*/*ISelLowering.cpp to call LowerToTLSEmulatedModel
for TLSModel::Emulated. Although all targets supporting ELF TLS models are
enhanced, emulated TLS model has been tested only for Android ELF targets.
Modified AsmPrinter.cpp to print the emutls_v.* and emutls_t.* variables for
emulated TLS variables.
Modified DwarfCompileUnit.cpp to skip some DIE for emulated TLS variabls.

TODO: Add proper DIE for emulated TLS variables.
      Added new unit tests with emulated TLS.

Differential Revision: http://reviews.llvm.org/D10522

llvm-svn: 243438
2015-07-28 16:24:05 +00:00
..
autoconf
bindings Fix `llvm-config` to emit the linker flag for the combined shared object built by autoconfig/make instead of the individual components. 2015-07-27 18:26:30 +00:00
cmake Use a specified list of languages in cmake project() command. 2015-07-28 14:43:53 +00:00
docs Implement target independent TLS compatible with glibc's emutls.c. 2015-07-28 16:24:05 +00:00
examples DI/Verifier: Fix argument bitrot in DILocalVariable 2015-07-24 23:59:25 +00:00
include Implement target independent TLS compatible with glibc's emutls.c. 2015-07-28 16:24:05 +00:00
lib Implement target independent TLS compatible with glibc's emutls.c. 2015-07-28 16:24:05 +00:00
projects
resources
test Implement target independent TLS compatible with glibc's emutls.c. 2015-07-28 16:24:05 +00:00
tools Fix `llvm-config` to emit the linker flag for the combined shared object built by autoconfig/make instead of the individual components. 2015-07-27 18:26:30 +00:00
unittests IR: Expose the method 'getLocalSlot' in the module slot tracker. 2015-07-27 22:31:04 +00:00
utils test-release.sh: Defer test errors until the end 2015-07-24 16:16:09 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt Use a specified list of languages in cmake project() command. 2015-07-28 14:43:53 +00:00
CODE_OWNERS.TXT
CREDITS.TXT
LICENSE.TXT
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules
README.txt
configure
llvm.spec.in

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