llvm-6502/test
Bill Schmidt d7802bf0dd This patch introduces initial-exec model support for thread-local storage
on 64-bit PowerPC ELF.

The patch includes code to handle external assembly and MC output with the
integrated assembler.  It intentionally does not support the "old" JIT.

For the initial-exec TLS model, the ABI requires the following to calculate
the address of external thread-local variable x:

 Code sequence            Relocation                  Symbol
  ld 9,x@got@tprel(2)      R_PPC64_GOT_TPREL16_DS      x
  add 9,9,x@tls            R_PPC64_TLS                 x

The register 9 is arbitrary here.  The linker will replace x@got@tprel
with the offset relative to the thread pointer to the generated GOT
entry for symbol x.  It will replace x@tls with the thread-pointer
register (13).

The two test cases verify correct assembly output and relocation output
as just described.

PowerPC-specific selection node variants are added for the two
instructions above:  LD_GOT_TPREL and ADD_TLS.  These are inserted
when an initial-exec global variable is encountered by
PPCTargetLowering::LowerGlobalTLSAddress(), and later lowered to
machine instructions LDgotTPREL and ADD8TLS.  LDgotTPREL is a pseudo
that uses the same LDrs support added for medium code model's LDtocL,
with a different relocation type.

The rest of the processing is straightforward.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169281 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04 16:18:08 +00:00
..
Analysis Modified dump() to provide a little 2012-11-30 00:44:47 +00:00
Archive
Assembler Fast-math test case for bitcode and textual reading/writing 2012-11-27 00:45:08 +00:00
Bindings/Ocaml
Bitcode
BugPoint
CodeGen This patch introduces initial-exec model support for thread-local storage 2012-12-04 16:18:08 +00:00
DebugInfo Add a 'count' field to the DWARF subrange. 2012-12-04 06:20:49 +00:00
ExecutionEngine llvm/test/ExecutionEngine/MCJIT/lit.local.cfg: ppc32-elf is not ready. 2012-11-20 10:49:01 +00:00
Feature Remove the dependent libraries feature. 2012-11-27 09:55:56 +00:00
FileCheck Fix a bug in FileCheck that wouldn't let define variables as follows: 2012-12-02 16:02:41 +00:00
Instrumentation Improve MSan tests. 2012-12-04 11:42:05 +00:00
Integer Remove the dependent libraries feature. 2012-11-27 09:55:56 +00:00
JitListener Add a 'count' field to the DWARF subrange. 2012-12-04 06:20:49 +00:00
Linker Remove the dependent libraries feature. 2012-11-27 09:55:56 +00:00
MC Fixed the arm disassembly of invalid BFI instructions to not build a bad MCInst 2012-11-29 23:47:11 +00:00
Object
Other Using "not grep" is brittle as the test passes if llvm-as fails. 2012-11-21 14:17:23 +00:00
Scripts Added program header emission 2012-11-16 20:51:32 +00:00
TableGen
tools/llvm-objdump Add a tests for the new -no-show-raw-insn option of llvm-objdump. 2012-11-20 23:44:22 +00:00
Transforms Add the last part that is needed for vectorization of if-converted code. 2012-12-04 06:15:11 +00:00
Unit
Verifier
YAMLParser
CMakeLists.txt Adding tests for the Intel JIT event listener's MCJIT support. 2012-11-21 20:38:26 +00:00
lit.cfg Adding tests for the Intel JIT event listener's MCJIT support. 2012-11-21 20:38:26 +00:00
lit.site.cfg.in Adding tests for the Intel JIT event listener's MCJIT support. 2012-11-21 20:38:26 +00:00
Makefile
Makefile.tests
TestRunner.sh