llvm-6502/lib/Transforms
Duncan P. N. Exon Smith 88e419d66e DebugInfo: Remove 'inlinedAt:' field from MDLocalVariable
Remove 'inlinedAt:' from MDLocalVariable.  Besides saving some memory
(variables with it seem to be single largest `Metadata` contributer to
memory usage right now in -g -flto builds), this stops optimization and
backend passes from having to change local variables.

The 'inlinedAt:' field was used by the backend in two ways:

 1. To tell the backend whether and into what a variable was inlined.
 2. To create a unique id for each inlined variable.

Instead, rely on the 'inlinedAt:' field of the intrinsic's `!dbg`
attachment, and change the DWARF backend to use a typedef called
`InlinedVariable` which is `std::pair<MDLocalVariable*, MDLocation*>`.
This `DebugLoc` is already passed reliably through the backend (as
verified by r234021).

This commit removes the check from r234021, but I added a new check
(that will survive) in r235048, and changed the `DIBuilder` API in
r235041 to require a `!dbg` attachment whose 'scope:` is in the same
`MDSubprogram` as the variable's.

If this breaks your out-of-tree testcases, perhaps the script I used
(mdlocalvariable-drop-inlinedat.sh) will help; I'll attach it to PR22778
in a moment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235050 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-15 22:29:27 +00:00
..
Hello [CMake] Add LLVM_LINK_COMPONENTS to loadable modules, LLVMHello and BugpointPasses, on Win32. 2014-07-13 13:36:48 +00:00
InstCombine GCC complains thusly: "attributes at the beginning of statement are ignored [-Werror=attributes]". Very well then! NFC 2015-04-13 20:03:08 +00:00
Instrumentation DebugInfo: Gut DISubprogram and DILexicalBlock* 2015-04-14 03:40:37 +00:00
IPO DebugInfo: Update signature of DICompileUnit::replace*() 2015-04-14 03:51:36 +00:00
ObjCARC Remove empty non-virtual destructors or mark them =default when non-public 2015-04-11 15:32:26 +00:00
Scalar DebugInfo: Require a DebugLoc in DIBuilder::insertDeclare() 2015-04-15 21:18:07 +00:00
Utils DebugInfo: Remove 'inlinedAt:' field from MDLocalVariable 2015-04-15 22:29:27 +00:00
Vectorize Add range iterators for post order and inverse post order. Use them 2015-04-15 17:41:42 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile