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b854304d0e
llvm-mirror/lib
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Leonard Chan b854304d0e [llvm][IR] Do not place constants with static relocations in a mergeable section 
This patch provides two major changes:

1. Add getRelocationInfo to check if a constant will have static, dynamic, or
   no relocations. (Also rename the original needsRelocation to needsDynamicRelocation.)
2. Only allow a constant with no relocations (static or dynamic) to be placed
   in a mergeable section.

This will allow unused symbols that contain static relocations and happen to
fit in mergeable constant sections (.rodata.cstN) to instead be placed in
unique-named sections if -fdata-sections is used and subsequently garbage collected
by --gc-sections.

See https://lists.llvm.org/pipermail/llvm-dev/2021-February/148281.html.

Differential Revision: https://reviews.llvm.org/D95960
2021-02-18 15:39:00 -08:00
..
Analysis [BasicAA] Always strip single-argument phi nodes 2021-02-18 23:07:50 +01:00
AsmParser Encode alignment attribute for cmpxchg 2021-02-11 15:17:50 -05:00
BinaryFormat [Debuginfo][DW_OP_implicit_pointer] (1/7) Support for DW_OP_LLVM_implicit_pointer 2021-01-15 14:45:04 +05:30
Bitcode [LTO] Perform DSOLocal propagation in combined index 2021-02-12 22:58:26 -08:00
Bitstream
CodeGen [llvm][IR] Do not place constants with static relocations in a mergeable section 2021-02-18 15:39:00 -08:00
DebugInfo DebugInfo/Symbolize: Exclude ARM mapping symbols for .symtab symbolization after D95916 2021-02-12 11:04:20 -08:00
Demangle [Demangle] Support demangling Swift calling convention in MS demangler. 2021-01-27 13:24:54 -08:00
DWARFLinker [dsymutil][DWARFLinker][NFC] make AddressManager not depending on the order of checks for relocations. 2021-01-31 16:34:10 +03:00
ExecutionEngine TransformUtils: Fix metadata handling in CloneModule (and improve CloneFunctionInto) 2021-02-15 11:56:00 -08:00
Extensions
FileCheck [llvm] Use llvm::sort (NFC) 2021-01-17 10:39:45 -08:00
Frontend [OpenMPIRBuilder] Implement collapseLoops. 2021-02-03 19:12:02 -06:00
Fuzzer
FuzzMutate [FuzzMutate] Add mutator to modify instruction flags. 2021-01-23 19:05:20 +00:00
InterfaceStub [llvm-elfabi] Support ELF file that lacks .gnu.hash section 2021-01-26 12:31:52 -08:00
IR [llvm][IR] Do not place constants with static relocations in a mergeable section 2021-02-18 15:39:00 -08:00
IRReader
LineEditor
Linker ValueMapper: Rename RF_MoveDistinctMDs => RF_ReuseAndMutateDistinctMDs, NFC 2021-02-10 16:53:21 -08:00
LTO [lto] Enable new PM when the PM config is non-empty 2021-02-15 20:49:09 +01:00
MC [WebAssembly] Fix assert in lookup of section symbols 2021-02-18 11:50:14 -08:00
MCA [llvm] Use llvm::find (NFC) 2021-01-19 20:19:14 -08:00
Object [AMDGPU] gfx90a support 2021-02-17 16:01:32 -08:00
ObjectYAML [AMDGPU] gfx90a support 2021-02-17 16:01:32 -08:00
Option [clang][cli] Command line round-trip for HeaderSearch options 2021-02-04 10:18:34 +01:00
Passes [NPM][LTO] Update buildLTODefaultPipeline to be more in-line with the old pass manager 2021-02-17 16:56:28 +00:00
ProfileData [Coverage] Store compilation dir separately in coverage mapping 2021-02-18 14:34:39 -08:00
Remarks [llvm] Use append_range (NFC) 2021-01-27 23:25:41 -08:00
Support [llvm] Ensure newlines at the end of files (NFC) 2021-02-17 23:58:44 -08:00
TableGen Revert "[TableGen] Improve algorithms for processing template arguments" 2021-02-18 09:26:26 -05:00
Target [llvm][IR] Do not place constants with static relocations in a mergeable section 2021-02-18 15:39:00 -08:00
Testing [clangd] Implement semanticTokens modifiers 2021-02-09 16:31:22 +01:00
TextAPI [llvm][TextAPI] add equality operator for InterfaceFile 2021-02-18 11:53:08 -08:00
ToolDrivers llvm-lib: Pull error printing code out of two functions 2021-01-26 19:13:30 -05:00
Transforms [CSSPGO] Use callsite sample counts to annotate indirect call sites. 2021-02-18 14:52:34 -08:00
WindowsManifest
XRay
CMakeLists.txt