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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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| .. | ||
| dsymutil | ||
| gold | ||
| llvm-cov | ||
| llvm-cxxdump | ||
| llvm-lit | ||
| llvm-lto | ||
| llvm-mc | ||
| llvm-nm | ||
| llvm-objdump | ||
| llvm-pdbdump | ||
| llvm-profdata | ||
| llvm-readobj | ||
| llvm-size | ||
| llvm-split | ||
| llvm-symbolizer | ||
| lto | ||