llvm-6502/include/llvm
Duncan P. N. Exon Smith 99f12691dd IR: Change MDFile to directly store the filename/directory
In the old (well, current) schema, there are two types of file
references: untagged and tagged (the latter references the former).

    !0 = !{!"filename", !"/directory"}
    !1 = !{!"0x29", !1} ; DW_TAG_file_type [filename] [/directory]

The interface to `DIBuilder` universally takes the tagged version,
described by `DIFile`.  However, most `file:` references actually use
the untagged version directly.

In the new hierarchy, I'm merging this into a single node: `MDFile`.

Originally I'd planned to keep the old schema unchanged until after I
moved the new hierarchy into place.

However, it turns out to be trivial to make `MDFile` match both nodes at
the same time.

  - Anyone referencing !1 does so through `DIFile`, whose implementation
    I need to gut anyway (as I do the rest of the `DIDescriptor`s).
  - Anyone referencing !0 just references an `MDNode`, and expects a
    node with two `MDString` operands.

This commit achieves that, and updates all the testcases for the parts
of the new hierarchy that used the two-node schema (I've replaced the
untagged nodes with `distinct !{}` to make the diff clear (otherwise the
metadata all gets renumbered); it might be worthwhile to come back and
delete those nodes and renumber the world, not sure).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230057 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-20 20:35:17 +00:00
..
ADT Introduce bitset metadata format and bitset lowering pass. 2015-02-20 20:30:47 +00:00
Analysis
AsmParser
Bitcode
CodeGen Remove the MCInstrInfo cached variable as it was only used in a 2015-02-20 06:35:21 +00:00
Config
DebugInfo
ExecutionEngine [Orc] Add a new JITSymbol constructor to build a symbol from an existing address. 2015-02-20 06:48:29 +00:00
IR IR: Change MDFile to directly store the filename/directory 2015-02-20 20:35:17 +00:00
IRReader
LineEditor
Linker
LTO
MC
Object
Option
ProfileData
Support Put MSVC back into the dumb compiler's corner. 2015-02-20 16:35:42 +00:00
TableGen
Target Make the TargetMachine::getSubtarget that takes a Function argument 2015-02-20 07:32:59 +00:00
Transforms Introduce bitset metadata format and bitset lowering pass. 2015-02-20 20:30:47 +00:00
CMakeLists.txt
InitializePasses.h Introduce bitset metadata format and bitset lowering pass. 2015-02-20 20:30:47 +00:00
LinkAllIR.h
LinkAllPasses.h
module.modulemap
module.modulemap.build
Pass.h
PassAnalysisSupport.h
PassInfo.h
PassRegistry.h
PassSupport.h