llvm-6502/lib
Bill Schmidt 240b9b6078 PPC64: Constant initializers with dynamic relocations go in .data.rel.ro.
This fixes warning messages observed in the oggenc application test in
projects/test-suite.  Special handling is needed for the 64-bit
PowerPC SVR4 ABI when a constant is initialized with a pointer to a
function in a shared library.  Because a function address is
implemented as the address of a function descriptor, the use of copy
relocations can lead to problems with initialization.  GNU ld
therefore replaces copy relocations with dynamic relocations to be
resolved by the dynamic linker.  This means the constant cannot reside
in the read-only data section, but instead belongs in .data.rel.ro,
which is designed for constants containing dynamic relocations.

The implementation creates a class PPC64LinuxTargetObjectFile
inheriting from TargetLoweringObjectFileELF, which behaves like its
parent except to place constants of this sort into .data.rel.ro.

The test case is reduced from the oggenc application.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181723 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-13 19:34:37 +00:00
..
Analysis Fix unchecked uses of DominatorTree in MemoryDependenceAnalysis. 2013-05-06 02:07:24 +00:00
Archive
AsmParser Add ArrayRef constructor from None, and do the cleanups that this constructor enables 2013-05-05 00:40:33 +00:00
Bitcode Micro-optimization: don't shift an entire bitcode record over to get the code. 2013-05-10 22:17:10 +00:00
CodeGen Remove redundant variable introduced by r181682. 2013-05-13 19:02:31 +00:00
DebugInfo libDebugInfo depends on libObject nowadays. 2013-05-09 13:48:26 +00:00
ExecutionEngine Remove dead code. 2013-05-10 23:34:51 +00:00
IR PR14492: Debug Info: Support for values of non-integer non-type template parameters. 2013-05-10 21:52:07 +00:00
IRReader Measure time that IR parsing took as part of the -time-passes measurement. 2013-04-03 15:33:45 +00:00
Linker Fix a performance bug in the Linker. 2013-05-04 05:05:18 +00:00
MC Remove the MachineMove class. 2013-05-13 01:16:13 +00:00
Object Change getRelocationAdditionalInfo to be ELF only. 2013-05-09 03:39:05 +00:00
Option
Support Fix a bug that APFloat::fusedMultiplyAdd() mistakenly evaluate "14.5f * -14.5f + 225.0f" to 225.0f. 2013-05-13 18:03:12 +00:00
TableGen
Target PPC64: Constant initializers with dynamic relocations go in .data.rel.ro. 2013-05-13 19:34:37 +00:00
Transforms [objc-arc] Move the before optimization statistics gathering phase out of OptimizeIndividualCalls. 2013-05-13 18:29:07 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile