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llvm-mirror/test/Transforms/ArgumentPromotion
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
..
2008-02-01-ReturnAttrs.ll
2008-07-02-array-indexing.ll
2008-09-07-CGUpdate.ll
2008-09-08-CGUpdateSelfEdge.ll
aggregate-promote.ll
attrs.ll
basictest.ll
byval-2.ll
byval.ll
callgraph-update.ll
chained.ll
control-flow2.ll
control-flow.ll
crash.ll
dbg.ll
fp80.ll
inalloca.ll
pr3085.ll
reserve-tbaa.ll
sret.ll
tail.ll
variadic.ll