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Rafael Espindola 4879864dd7 Move LMAOffset from the OutputSection to the PhdrEntry. NFC. 
If two sections are in the same PT_LOAD, their relatives offsets,
virtual address and physical addresses are all the same.

I initially wanted to have a single global LMAOffset, on the
assumption that every ELF file was in practiced loaded contiguously in
both physical and virtual memory.

Unfortunately that is not the case. The linux kernel has:

  LOAD           0x200000 0xffffffff81000000 0x0000000001000000 0xced000 0xced000 R E 0x200000
  LOAD           0x1000000 0xffffffff81e00000 0x0000000001e00000 0x15f000 0x15f000 RW  0x200000
  LOAD           0x1200000 0x0000000000000000 0x0000000001f5f000 0x01b198 0x01b198 RW  0x200000
  LOAD           0x137b000 0xffffffff81f7b000 0x0000000001f7b000 0x116000 0x1ec000 RWE 0x200000

The delta for all but the third PT_LOAD is the same:
0xffffffff80000000. I think the 3rd one is a hack for implementing per
cpu data, but we can't break that.

llvm-svn: 323456
 		2018-01-25 19:02:08 +00:00
..
COFF [COFF] don't replace import library if contents are unchanged 2018-01-23 00:36:42 +00:00
Common Add a missing file header. 2018-01-18 23:46:28 +00:00
ELF Move LMAOffset from the OutputSection to the PhdrEntry. NFC. 2018-01-25 19:02:08 +00:00
MinGW [MinGW] Ignore the --no-seh flag 2017-12-15 20:53:10 +00:00
cmake/modules [lld] Switch to add_llvm_install_targets 2017-12-01 04:17:45 +00:00
docs Docs, release notes: update version to 7.0.0 2018-01-03 15:51:31 +00:00
include/lld [coff] Print detailed timing information with /TIME. 2018-01-17 19:16:26 +00:00
lib [YAML] Fix mustQuote return type changed in r320996 2017-12-18 17:49:27 +00:00
test Improve LMARegion handling. 2018-01-25 17:42:03 +00:00
tools/lld [CMake] Use PRIVATE in target_link_libraries for executables 2017-12-05 21:49:56 +00:00
unittests [CMake] Use PRIVATE in target_link_libraries for executables 2017-12-05 21:49:56 +00:00
utils Add a script to run various benchmarks and send the result to lnt. 2017-11-14 16:40:30 +00:00
wasm [WebAssembly] Don't duplicate functions in table output 2018-01-24 21:45:25 +00:00
.arcconfig [lld] Set up .arcconfig to point to new Diffusion LLD repository 2017-12-06 20:56:23 +00:00
.clang-format
…
.gitignore
…
CMakeLists.txt [WebAssembly] Initial wasm linker implementation 2017-11-17 18:14:09 +00:00
CODE_OWNERS.TXT [WebAssembly] Initial wasm linker implementation 2017-11-17 18:14:09 +00:00
LICENSE.TXT
…
README.md Note that the test .tar.xz has been updated. 2017-12-22 19:37:32 +00:00

README.md

LLVM Linker (lld)

This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.

lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.

Benchmarking

In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.

It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz

The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.