1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-27 22:12:47 +01:00
llvm-mirror/lib/Target/R600/MCTargetDesc
Rafael Espindola 13ff8033c2 Add r224985 back with a fix.
The issues was that AArch64 has additional restrictions on when local
relocations can be used. We have to take those into consideration when
deciding to put a L symbol in the symbol table or not.

Original message:

Remove doesSectionRequireSymbols.

In an assembly expression like

bar:
.long L0 + 1

the intended semantics is that bar will contain a pointer one byte past L0.

In sections that are merged by content (strings, 4 byte constants, etc), a
single position in the section doesn't give the linker enough information.
For example, it would not be able to tell a relocation must point to the
end of a string, since that would look just like the start of the next.

The solution used in ELF to use relocation with symbols if there is a non-zero
addend.

In MachO before this patch we would just keep all symbols in some sections.

This would miss some cases (only cstrings on x86_64 were implemented) and was
inefficient since most relocations have an addend of 0 and can be represented
without the symbol.

This patch implements the non-zero addend logic for MachO too.

llvm-svn: 225048
2014-12-31 17:19:34 +00:00
..
AMDGPUAsmBackend.cpp Add r224985 back with a fix. 2014-12-31 17:19:34 +00:00
AMDGPUELFObjectWriter.cpp
AMDGPUFixupKinds.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
AMDGPUMCAsmInfo.cpp R600/SI: Restore PrivateGlobalPrefix to the default ELF value of ".L" 2014-12-06 05:34:34 +00:00
AMDGPUMCAsmInfo.h Move getNonexecutableStackSection up to the base ELF class. 2014-10-15 15:44:16 +00:00
AMDGPUMCCodeEmitter.cpp
AMDGPUMCCodeEmitter.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
AMDGPUMCTargetDesc.cpp Simplify handling of --noexecstack by using getNonexecutableStackSection. 2014-10-15 16:12:52 +00:00
AMDGPUMCTargetDesc.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile
R600MCCodeEmitter.cpp
SIMCCodeEmitter.cpp R600/SI: Make sure non-inline constants aren't folded into mubuf soffset operand 2014-12-19 22:15:30 +00:00