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5b721561aa
llvm-mirror/test/Transforms/Mem2Reg
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Peter Collingbourne 5b721561aa DI: Reverse direction of subprogram -> function edge. 
Previously, subprograms contained a metadata reference to the function they
described. Because most clients need to get or set a subprogram for a given
function rather than the other way around, this created unneeded inefficiency.

For example, many passes needed to call the function llvm::makeSubprogramMap()
to build a mapping from functions to subprograms, and the IR linker needed to
fix up function references in a way that caused quadratic complexity in the IR
linking phase of LTO.

This change reverses the direction of the edge by storing the subprogram as
function-level metadata and removing DISubprogram's function field.

Since this is an IR change, a bitcode upgrade has been provided.

Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is
attached to the PR.

Differential Revision: http://reviews.llvm.org/D14265

llvm-svn: 252219
2015-11-05 22:03:56 +00:00
..
2002-03-28-UninitializedVal.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
2002-05-01-ShouldNotPromoteThisAlloca.ll
2003-04-10-DFNotFound.ll
2003-04-18-DeadBlockProblem.ll
2003-04-24-MultipleIdenticalSuccessors.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
2003-06-26-IterativePromote.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
2003-10-05-DeadPHIInsertion.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
2005-06-30-ReadBeforeWrite.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
2005-11-28-Crash.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
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 [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
ConvertDebugInfo2.ll DI: Reverse direction of subprogram -> function edge. 2015-11-05 22:03:56 +00:00
ConvertDebugInfo.ll DI: Reverse direction of subprogram -> function edge. 2015-11-05 22:03:56 +00:00
crash.ll Move the personality function from LandingPadInst to Function 2015-06-17 20:52:32 +00:00
ignore-lifetime.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
pr24179.ll Fix mem2reg to correctly handle allocas only used in a single block 2015-07-22 10:29:29 +00:00
PromoteMemToRegister.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
UndefValuesMerge.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00