llvm-6502/test/Transforms/Mem2Reg
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
..
2002-03-28-UninitializedVal.ll
2002-05-01-ShouldNotPromoteThisAlloca.ll
2003-04-10-DFNotFound.ll
2003-04-18-DeadBlockProblem.ll
2003-04-24-MultipleIdenticalSuccessors.ll
2003-06-26-IterativePromote.ll
2003-10-05-DeadPHIInsertion.ll
2005-06-30-ReadBeforeWrite.ll
2005-11-28-Crash.ll
2007-08-27-VolatileLoadsStores.ll [opaque pointer type] Add textual IR support for explicit type parameter to gep operator 2015-03-13 18:20:45 +00:00
atomic.ll
ConvertDebugInfo2.ll DebugInfo: Remove 'inlinedAt:' field from MDLocalVariable 2015-04-15 22:29:27 +00:00
ConvertDebugInfo.ll DebugInfo: Fix bad debug info for compile units and types 2015-03-27 20:46:33 +00:00
crash.ll
ignore-lifetime.ll
PromoteMemToRegister.ll
UndefValuesMerge.ll