forked from OSchip/llvm-project
4445135109
For dependency scanning, it would be useful to collect header search paths (provided on command-line via `-I` and friends) that were actually used during preprocessing. This patch adds that feature to `HeaderSearch` along with a new remark that reports such paths as they get used. Previous version of this patch tried to use the existing `LookupFileCache` to report used paths via `HitIdx`. That doesn't work for `ComputeUserEntryUsage` (which is intended to be called *after* preprocessing), because it indexes used search paths by the file name. This means the values get overwritten when the code contains `#include_next`. Note that `HeaderSearch` doesn't use `HeaderSearchOptions::UserEntries` directly. Instead, `InitHeaderSearch` pre-processes them (adds platform-specific paths, removes duplicates, removes paths that don't exist) and creates `DirectoryLookup` instances. This means we need a mechanism for translating between those two. It's not possible to go from `DirectoryLookup` back to the original `HeaderSearch`, so `InitHeaderSearch` now tracks the relationships explicitly. Depends on D111557. Reviewed By: dexonsmith Differential Revision: https://reviews.llvm.org/D102923 |
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| .. | ||
| TestFramework.framework | ||
| cycle | ||
| headermap-rel | ||
| headermap-rel2 | ||
| include-file-and-dir | ||
| include-file-test | ||
| include-header-missing-in-framework | ||
| include-next-1 | ||
| include-next-2 | ||
| include-subdir | ||
| include_instead | ||
| microsoft-header-search | ||
| nonportable-hmaps | ||
| search-path-usage | ||
| llvm-rc.h | ||
| llvm-windres.h | ||
| pragma_sysheader.h | ||