3 Commits

Author SHA1 Message Date
Stephen Tozer
632f44e5ed
[RemoveDIs][DebugInfo] Handle DPVAssign in most transforms (#78986)
This patch trivially updates various opt passes to handle DPVAssigns. In
all cases, this means some combination of generifying existing code to
handle DPValues and DbgAssignIntrinsics, iterating over DPValues where
previously we did not, or duplicating code for DbgAssignIntrinsics to
the equivalent DPValue function (in inlining and salvageDebugInfo).
2024-01-23 16:16:59 +00:00
OCHyams
4ece50737d [Assignment Tracking][NFC] Replace LLVM command line option with a module flag
Remove LLVM flag -experimental-assignment-tracking. Assignment tracking is
still enabled from Clang with the command line -Xclang
-fexperimental-assignment-tracking which tells Clang to ask LLVM to run the
pass declare-to-assign. That pass converts conventional debug intrinsics to
assignment tracking metadata. With this patch it now also sets a module flag
debug-info-assignment-tracking with the value `i1 true` (using the flag conflict
rule `Max` since enabling assignment tracking on IR that contains only
conventional debug intrinsics should cause no issues).

Update the docs and tests too.

Reviewed By: CarlosAlbertoEnciso

Differential Revision: https://reviews.llvm.org/D142027
2023-01-20 14:24:15 +00:00
OCHyams
98562e8bb7 [Assignment Tracking][19/*] Account for assignment tracking in ADCE
The Assignment Tracking debug-info feature is outlined in this RFC:

https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir

In an attempt to preserve more info, don't delete dbg.assign intrinsics that
are considered "out of scope" if they're linked to instructions.

Reviewed By: jmorse

Differential Revision: https://reviews.llvm.org/D133314
2022-11-15 13:13:38 +00:00