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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 |
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| .. | ||
| 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 | ||