mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-26 12:50:30 +00:00
d558b9268e
Summary: This implements the design discussed on llvm-dev for better tracking of variables that live in memory through optimizations: http://lists.llvm.org/pipermail/llvm-dev/2017-September/117222.html This is tracked as PR34136 llvm.dbg.addr is intended to be produced and used in almost precisely the same way as llvm.dbg.declare is today, with the exception that it is control-dependent. That means that dbg.addr should always have a position in the instruction stream, and it will allow passes that optimize memory operations on local variables to insert llvm.dbg.value calls to reflect deleted stores. See SourceLevelDebugging.rst for more details. The main drawback to generating DBG_VALUE machine instrs is that they usually cause LLVM to emit a location list for DW_AT_location. The next step will be to teach DwarfDebug.cpp how to recognize more DBG_VALUE ranges as not needing a location list, and possibly start setting DW_AT_start_offset for variables whose lifetimes begin mid-scope. Reviewers: aprantl, dblaikie, probinson Subscribers: eraman, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D37768 llvm-svn: 313825 |
||
|---|---|---|
| .. | ||
| 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 | ||
| atomic.ll | ||
| ConvertDebugInfo2.ll | ||
| ConvertDebugInfo.ll | ||
| crash.ll | ||
| dbg-addr-inline-dse.ll | ||
| dbg-addr.ll | ||
| debug-alloca-phi.ll | ||
| ignore-lifetime.ll | ||
| optnone.ll | ||
| pr24179.ll | ||
| preserve-nonnull-load-metadata.ll | ||
| PromoteMemToRegister.ll | ||
| UndefValuesMerge.ll | ||