Commit Graph

5200 Commits

Author SHA1 Message Date
Rafael Espindola 37bcaac179 Add support for common symbols.
llvm-svn: 262848
2016-03-07 19:15:57 +00:00
Rui Ueyama 68fae23475 Do not use "default" for a fully-covered switch.
llvm-svn: 262846
2016-03-07 19:06:14 +00:00
Rafael Espindola e711fc3767 Adjust the .bss alignment to include common symbols.
llvm-svn: 262840
2016-03-07 17:43:39 +00:00
Rafael Espindola 4f29c1a337 lto: Record visibility in defined symbols.
llvm-svn: 262835
2016-03-07 17:14:36 +00:00
Rui Ueyama fd4fee599e Split BitcodeFile::parse. NFC.
llvm-svn: 262813
2016-03-07 00:54:17 +00:00
George Rimar 2f0fab53e4 [ELF] - Simplify a SymbolBody class interface a bit.
Get rid of few accessors in that class, and replace
them with direct fields access.

Differential revision: http://reviews.llvm.org/D17879

llvm-svn: 262796
2016-03-06 06:26:18 +00:00
George Rimar 4d1d16d0ed Fixed formatting issues in AArch64 target methods. NFC.
llvm-svn: 262795
2016-03-06 06:16:05 +00:00
George Rimar 7b8850f2bd [ELF] - Changed return type of Target::relaxTls()
Patch changes the return type of Target::relaxTls 
to size_t from unsigned. That is consistent with
its use from other code.

Change was reviewed http://reviews.llvm.org/D17882
and asked to commit separately from that patch above.

llvm-svn: 262794
2016-03-06 06:09:50 +00:00
George Rimar 98b060d228 [ELF] - Use the uint32_t instead of unsigned in Target class for relocations types
Patch changes all relocations types to be uint32_t and also 
fixes some dependent inconsistency in callers code.

Differential revision: http://reviews.llvm.org/D17882

llvm-svn: 262793
2016-03-06 06:01:07 +00:00
Rafael Espindola 7f6d50b229 Use IRMover directly.
This has a few advantages:
* If lld selected a non bitcode symbol, be the bitcode GV is not merged
* lib/Linker is not redoing symbol resolution.

llvm-svn: 262773
2016-03-05 14:51:51 +00:00
Rafael Espindola 888f2c33d4 lto: Start taking symbol visibility into consideration.
llvm-svn: 262761
2016-03-05 00:09:37 +00:00
Rafael Espindola d405f4721c Refactor target independent code.
The rules for when we can relax tls relocations are target independent.
The only things that are target dependent are the relocation values.

llvm-svn: 262748
2016-03-04 21:37:09 +00:00
Rui Ueyama d4530c6eb8 Add a comment about _DYNAMIC.
llvm-svn: 262735
2016-03-04 18:34:14 +00:00
Rafael Espindola 1ea51d2718 Refactor duplicated code.
llvm-svn: 262720
2016-03-04 16:14:19 +00:00
Simon Atanasyan 4e18a3163d [ELF][MIPS] Factor out the code reading and sign-extending low 16-bits of 32-bit word. NFC
llvm-svn: 262708
2016-03-04 10:55:29 +00:00
Simon Atanasyan 0dcf541692 [ELF][MIPS] Factor out the code writing relocation result into low 16-bit of destination. NFC
llvm-svn: 262707
2016-03-04 10:55:24 +00:00
Simon Atanasyan 3b37785fee [ELF][MIPS] Factor out the code reading and calculating AHL addend into the separate function. NFC
llvm-svn: 262706
2016-03-04 10:55:20 +00:00
Simon Atanasyan deed55d706 [ELF][MIPS] Use writeMipsHi16 to apply result of R_MIPS_PCHI16 relocation. NFC
llvm-svn: 262705
2016-03-04 10:55:16 +00:00
Simon Atanasyan a888e6726f [ELF][MIPS] Replace S and A arguments of the writeMipsHi16 function by the single argument V. NFC
llvm-svn: 262704
2016-03-04 10:55:12 +00:00
Simon Atanasyan 3474b907dd [ELF][MIPS] s/applyMipsHi16Reloc/writeMipsHi16/ NFC
llvm-svn: 262703
2016-03-04 10:55:04 +00:00
Rui Ueyama a3cb80adfc Use check function.
llvm-svn: 262685
2016-03-04 01:56:52 +00:00
Davide Italiano 255730cdc5 [ELF] Generalize symbol type handling.
SymbolBody constructor and friends take isFunc and isTLS boolean arguments.
ELF symbols have already a type so than be easily passed as argument.
If we want to support another type, this scheme is not good enough, that is,
the current code logic would require passing another `bool isObject` around.
Up to two argument, this stretching exercise was a little bit goofy but
still acceptable, but with more types to support, is just too much, IMHO.

Change the code so that the type is passed instead.

Differential Revision:   http://reviews.llvm.org/D17871

llvm-svn: 262684
2016-03-04 01:55:28 +00:00
Rafael Espindola 75714f618c Rename 'fatal' to 'check' when it doesn't always fail.
llvm-svn: 262666
2016-03-03 22:24:39 +00:00
Rui Ueyama 6df27e7f21 Remove dead code.
llvm-svn: 262662
2016-03-03 21:56:21 +00:00
Davide Italiano 05920b14c8 [ELF] Be slightly more consistent, use uint8_t instead of unsigned char.
llvm-svn: 262660
2016-03-03 21:54:03 +00:00
Rafael Espindola ec9957bd0b Delete dead code.
llvm-svn: 262653
2016-03-03 20:45:26 +00:00
George Rimar e5960ceb6b [ELF] - Do not allow .bss to occupy the file space when producing relocatable output
When generating relocatable output SHT_NOBITS sections
were still occupy the file space.

Differential revision: http://reviews.llvm.org/D17857

llvm-svn: 262650
2016-03-03 20:24:14 +00:00
Rafael Espindola 005d84430d Fix PR26818.
The hack of using a plt address as the address of an undefined function
only works in executables. Don't try it with shared libraries.

llvm-svn: 262642
2016-03-03 18:44:38 +00:00
Rafael Espindola 1130935c4a Simplify error handling.
This makes fatal return T when there is no error. This avoids the need
for quite a few temporaries.

llvm-svn: 262626
2016-03-03 16:21:44 +00:00
George Rimar 4cfe572932 [ELF] - add support for relocations against local symbols when producing relocatable output.
There was a known limitation for -r option:
relocations against local symbols were not supported. 
For example rel[a].eh_frame sections contained relocations against sections
and that was not supported for -r before. Patch fixes that.

Differential review: http://reviews.llvm.org/D17813

llvm-svn: 262590
2016-03-03 07:49:35 +00:00
Rui Ueyama eb3413e43a Replace ECRAII class with a function.
RCRAII class was a bit tricky. This patch removes that.

llvm-svn: 262586
2016-03-03 06:22:29 +00:00
Rui Ueyama 3178b80067 Inline a trivial CMakeLists.txt.
llvm-svn: 262574
2016-03-03 01:56:23 +00:00
Rui Ueyama 6b500dc5f9 Simplify string operations. NFC.
llvm-svn: 262569
2016-03-03 00:51:23 +00:00
Rui Ueyama 05a6333842 Use StringRef member function instead of including StringExtras.h
llvm-svn: 262568
2016-03-03 00:51:21 +00:00
Rui Ueyama a1ee70ba75 Allow joined options to fix http://llvm.org/pr26730.
llvm-svn: 262550
2016-03-03 00:09:02 +00:00
Rui Ueyama a0e9806101 Use ld.lld instead of "lld -flavor gnu".
llvm-svn: 262518
2016-03-02 21:11:36 +00:00
Rui Ueyama a453c0a5ad Merge DarwinLdDriver and Driver.
Now that DarwinLdDriver is the only derived class of Driver.
This patch merges them and actually removed the class because
they can now just be non-member functions. This change simplifies
a common header, Driver.h.

http://reviews.llvm.org/D17788

llvm-svn: 262502
2016-03-02 19:08:05 +00:00
Rui Ueyama 515025522b Use C++11 initializers for data members.
http://reviews.llvm.org/D17793

llvm-svn: 262501
2016-03-02 19:06:20 +00:00
Rafael Espindola cdf3a2a5be 1Fix handling of undef in partial LTO.
llvm-svn: 262497
2016-03-02 18:21:46 +00:00
Rafael Espindola 3ca9ee0c53 LTO: Use the correct relocation model.
llvm-svn: 262492
2016-03-02 17:21:06 +00:00
Rafael Espindola 4de44b7ef8 Handle comdat in LTO.
llvm-svn: 262489
2016-03-02 15:43:50 +00:00
Rafael Espindola 3006daadb2 Fix BUILD_SHARED_LIBS build.
llvm-svn: 262485
2016-03-02 14:12:37 +00:00
Simon Atanasyan ea423e261f [ELF] Fix reading of PC values of FDEs
The patch fixes two related problems:
- If CIE augmentation string has 'L' token the CIE contains a byte
  defines LSDA encoding. We should skip this byte in `getFdeEncoding`
  routine. Before this fix we do not skip it and if the next token
  is 'R' treat this byte as FDE encoding.
- FDE encoding format has separate flags e.g. DW_EH_PE_pcrel for
  definition of relative pointers. We should add .eh_frame address to
  the PC value iif the DW_EH_PE_pcrel is specified.

http://www.airs.com/blog/archives/460

There is one more not fixed problem in this code. If PC value is encoded
using signed relative format e.g. DW_EH_PE_sdata4 | DW_EH_PE_pcrel we
should sign extend result of read32 to perform calculation correctly.
I am going to fix that in a separate patch.

Differential Revision: http://reviews.llvm.org/D17733

llvm-svn: 262461
2016-03-02 05:38:42 +00:00
Rui Ueyama 52968b58f5 Use C++11 initializers for data members.
llvm-svn: 262447
2016-03-02 01:49:27 +00:00
Rui Ueyama 0c8fad7dba Remove more dead code.
llvm-svn: 262445
2016-03-02 01:34:36 +00:00
Rui Ueyama 0c23bcb252 Remove default implementations that are always overridden by subclasses.
llvm-svn: 262444
2016-03-02 01:34:34 +00:00
Rui Ueyama 01ba8b2f7b Remove more dead code.
llvm-svn: 262443
2016-03-02 01:23:29 +00:00
Rui Ueyama ca5e90f83c Remove dead code.
llvm-svn: 262436
2016-03-02 00:43:37 +00:00
Rui Ueyama be34a9c24e Remove remaining files of Core.
llvm-svn: 262435
2016-03-02 00:37:50 +00:00
Rui Ueyama 7a963bf02c Tidy up CMakefiles.
llvm-svn: 262434
2016-03-02 00:31:34 +00:00