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llvm-project/llvm/test/Transforms/DeadStoreElimination
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Peter Collingbourne d4bff30370 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
..
2011-03-25-DSEMiscompile.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
2011-09-06-EndOfFunction.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
2011-09-06-MemCpy.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
OverwriteStoreEnd.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
PartialStore.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
atomic.ll MemoryDependenceAnalysis: Don't miscompile atomics 2015-03-21 06:19:17 +00:00
calloc-store.ll [DeadStoreElimination] Remove dead zero store to calloc initialized memory 2015-09-23 11:38:44 +00:00
const-pointers.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
crash.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
cs-cs-aliasing.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
dominate.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
free.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
inst-limits.ll DI: Reverse direction of subprogram -> function edge. 2015-11-05 22:03:56 +00:00
libcalls.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
lifetime.ll Revert "[DSE] Enable removal of lifetime intrinsics in terminating blocks" 2015-08-20 08:58:47 +00:00
memintrinsics.ll
…
no-targetdata.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
pr11390.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
simple.ll [DeadStoreElimination] remove a redundant store even if the load is in a different block. 2015-08-13 15:36:11 +00:00