David Blaikie f93662d3d5 DebugInfo: Use distinct inlinedAt MDLocations to avoid separate inlined calls being coalesced ... When two calls from the same MDLocation are inlined they currently get treated as one inlined function call (creating difficulty debugging, duplicate variables, etc). Clang worked around this by including column information on inline calls which doesn't address LTO inlining or calls to the same function from the same line and column (such as through a macro). It also didn't address ctor and member function calls. By making the inlinedAt locations distinct, every call site has an explicitly distinct location that cannot be coalesced with any other call. This can produce linearly (2x in the worst case where every call is inlined and the call instruction has a non-call instruction at the same location) more debug locations. Any increase beyond that are in cases where the Clang workaround was insufficient and the new scheme is creating necessary distinct nodes that were being erroneously coalesced previously. After this change to LLVM the incomplete workarounds in Clang. That should reduce the number of debug locations (in a build without column info, the default on Darwin, not the default on Linux) by not creating pseudo-distinct locations for every call to an inline function. (oh, and I made the inlined-at chain rebuilding iterative instead of recursive because I was having trouble wrapping my head around it the way it was - open to discussion on the right design for that function (including going back to a recursive solution)) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226736 91177308-0d34-0410-b5e6-96231b3b80d8		2015-01-21 22:57:29 +00:00
..
AddDiscriminators.cpp	IR: Split Metadata from Value	2014-12-09 18:38:53 +00:00
ASanStackFrameLayout.cpp
BasicBlockUtils.cpp	[PM] Replace the Pass argument to SplitEdge with specific analyses used	2015-01-19 12:36:53 +00:00
BreakCriticalEdges.cpp	[PM] Remove the Pass argument from all of the critical edge splitting	2015-01-19 12:09:11 +00:00
BuildLibCalls.cpp	[PM] Move TargetLibraryInfo into the Analysis library.	2015-01-15 02:16:27 +00:00
BypassSlowDivision.cpp
CloneFunction.cpp	Rename MapValue(Metadata*) to MapMetadata()	2014-12-19 06:06:18 +00:00
CloneModule.cpp	Remove a bad cast in CloneModule()	2014-12-23 08:23:45 +00:00
CMakeLists.txt
CmpInstAnalysis.cpp
CodeExtractor.cpp
CtorUtils.cpp
DemoteRegToStack.cpp
FlattenCFG.cpp
GlobalStatus.cpp
InlineFunction.cpp	DebugInfo: Use distinct inlinedAt MDLocations to avoid separate inlined calls being coalesced	2015-01-21 22:57:29 +00:00
InstructionNamer.cpp
IntegerDivision.cpp
LCSSA.cpp	[PM] Split the LoopInfo object apart from the legacy pass, creating	2015-01-17 14:16:18 +00:00
LLVMBuild.txt	Update libdeps since TLI was moved from Target to Analysis in r226078.	2015-01-15 05:21:00 +00:00
Local.cpp	[PM] Replace the Pass argument in MergeBasicBlockIntoOnlyPred with	2015-01-20 01:37:09 +00:00
LoopSimplify.cpp	[PM] Lift the analyses into the interface for	2015-01-19 03:03:39 +00:00
LoopUnroll.cpp	[PM] Now that LoopInfo isn't in the Pass type hierarchy, it is much	2015-01-18 01:25:51 +00:00
LoopUnrollRuntime.cpp	[PM] Replace the Pass argument to SplitEdge with specific analyses used	2015-01-19 12:36:53 +00:00
LowerExpectIntrinsic.cpp
LowerInvoke.cpp
LowerSwitch.cpp	[SwitchLowering] Handle destinations on multiple phi instructions	2014-12-02 18:31:53 +00:00
Makefile
Mem2Reg.cpp	[PM] Split the AssumptionTracker immutable pass into two separate APIs:	2015-01-04 12:03:27 +00:00
MetaRenamer.cpp
ModuleUtils.cpp
PromoteMemoryToRegister.cpp	[PM] Split the AssumptionTracker immutable pass into two separate APIs:	2015-01-04 12:03:27 +00:00
SimplifyCFG.cpp	fix {typo, build failure} in r225760	2015-01-13 04:17:47 +00:00
SimplifyIndVar.cpp	[PM] Remove a dead field.	2015-01-17 14:31:35 +00:00
SimplifyInstructions.cpp	[PM] Separate the TargetLibraryInfo object from the immutable pass.	2015-01-15 10:41:28 +00:00
SimplifyLibCalls.cpp	[PM] Replace an abuse of inheritance to override a single function with	2015-01-21 02:11:59 +00:00
SSAUpdater.cpp
SymbolRewriter.cpp	SymbolRewriter: use iplist::splice	2015-01-05 17:56:32 +00:00
UnifyFunctionExitNodes.cpp
Utils.cpp
ValueMapper.cpp	IR: Move MDNode clone() methods from ValueMapper to MDNode, NFC	2015-01-20 02:56:57 +00:00