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David Peixotto 0fc8c68b11 Add support for parsing ARM symbol variants on ELF targets 
ARM symbol variants are written with parens instead of @ like this:

  .word __GLOBAL_I_a(target1)

This commit adds support for parsing these symbol variants in
expressions. We introduce a new flag to MCAsmInfo that indicates the
parser should use parens to parse the symbol variant. The expression
parser is modified to look for symbol variants using parens instead
of @ when the corresponding MCAsmInfo flag is true.

The MCAsmInfo parens flag is enabled only for ARM on ELF.

By adding this flag to MCAsmInfo, we are able to get rid of
redundant ARM-specific symbol variants and use the generic variants
instead (e.g. VK_GOT instead of VK_ARM_GOT). We use the new
UseParensForSymbolVariant attribute in MCAsmInfo to correctly print
the symbol variants for arm.

To achive this we need to keep a handle to the MCAsmInfo in the
MCSymbolRefExpr class that we can check when printing the symbol
variant.

Updated Tests:
  Changed case of symbol variant to match the generic kind.
  test/CodeGen/ARM/tls-models.ll
  test/CodeGen/ARM/tls1.ll
  test/CodeGen/ARM/tls2.ll
  test/CodeGen/Thumb2/tls1.ll
  test/CodeGen/Thumb2/tls2.ll

PR18080


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196424 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-04 22:43:20 +00:00
..
ADT [PM] [cleanup] Replace a reserved identifier "_Self" with the injected 2013-11-26 22:36:41 +00:00
Analysis Fix dominator descendants for unreachable blocks. 2013-12-02 14:08:27 +00:00
Assembly
Bitcode Add addrspacecast instruction. 2013-11-15 01:34:59 +00:00
CodeGen Reland 196270 "Generalize debug info / EH emission in AsmPrinter" 2013-12-03 15:10:23 +00:00
Config Update to reflect the next release. 2013-11-20 10:10:50 +00:00
DebugInfo DWARF parser: Use ArrayRef to represent form sizes and simplify DWARFDIE::extractFast() interface. No functionality change. 2013-10-28 23:41:49 +00:00
ExecutionEngine [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
IR Debug Info: Move the constant for Debug Info Version from Dwarf.h to Metadata.h. 2013-12-02 20:09:52 +00:00
IRReader
LTO Protect user-supplied runtime library functions in LTO 2013-11-12 21:44:01 +00:00
MC Add support for parsing ARM symbol variants on ELF targets 2013-12-04 22:43:20 +00:00
Object Readobj: If NumbersOfSections is 0xffff, it's an COFF import library. 2013-11-15 20:23:25 +00:00
Option Option parsing: support case-insensitive option matching. 2013-08-28 20:04:31 +00:00
Support Un-revert r196358: "llvm-cov: Added support for function checksums." 2013-12-04 08:57:17 +00:00
TableGen Speling fixes. 2013-10-22 15:18:03 +00:00
Target Move getSymbolWithGlobalValueBase to TargetLoweringObjectFile. 2013-12-02 16:25:47 +00:00
Transforms Add a Scalarizer pass. 2013-11-22 16:58:05 +00:00
AutoUpgrade.h Debug Info: drop debug info via upgrading path if version number does not match. 2013-12-02 21:29:56 +00:00
CMakeLists.txt
DebugInfo.h Debug Info: rename getDebugInfoVersionFromModule to getDebugMetadataVersionFromModule. 2013-12-03 00:12:14 +00:00
DIBuilder.h DebugInfo: Simplify a few more explicit constructions, underconstrained types, and make DIType(MDNode*) explicit like all the other DI* node ctors. 2013-11-18 23:33:32 +00:00
GVMaterializer.h Use error_code in GVMaterializer. 2013-11-05 19:36:34 +00:00
InitializePasses.h [PM] Split the CallGraph out from the ModulePass which creates the 2013-11-26 04:19:30 +00:00
InstVisitor.h Add addrspacecast instruction. 2013-11-15 01:34:59 +00:00
LinkAllIR.h
LinkAllPasses.h Add a Scalarizer pass. 2013-11-22 16:58:05 +00:00
Linker.h Add a 'deleteModule' method to the Linker class. 2013-10-16 08:59:57 +00:00
Pass.h
PassAnalysisSupport.h
PassManager.h Move the old pass manager infrastructure into a legacy namespace and 2013-11-09 12:26:54 +00:00
PassRegistry.h
PassSupport.h