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Summary:
Sometimes MIR-level passes create DILocations that were not present in the
LLVM-IR. For example, it may merge two DILocations together to produce a
DILocation that points to line 0.
Previously, the address of these DILocations were printed which prevented the
MIR from being read back into LLVM. With this patch, DILocations will use
metadata references where possible and fall back on serializing them inline like so:
MOV32mr %stack.0.x.addr, 1, _, 0, _, %0, debug-location !DILocation(line: 1, scope: !15)
Reviewers: aprantl, vsk, arphaman
Reviewed By: aprantl
Subscribers: probinson, llvm-commits
Tags: #debug-info
Differential Revision: https://reviews.llvm.org/D55243
llvm-svn: 349035
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Summary:
Previously a BUNDLE instruction inherited the DebugLoc from the
first instruction in the bundle, even if that DebugLoc had no
DILocation. With this commit this is changed into selecting the
first DebugLoc that has a DILocation, by searching among the
bundled instructions.
The idea is to reduce amount of bundles that are lacking
debug locations.
Reviewers: #debug-info, JDevlieghere
Reviewed By: JDevlieghere
Subscribers: JDevlieghere, mattd, llvm-commits
Differential Revision: https://reviews.llvm.org/D50639
llvm-svn: 340267
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