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| author | Jay Foad <jay.foad@amd.com> | 2023-05-24 12:00:01 +0100 |
|---|---|---|
| committer | Jay Foad <jay.foad@amd.com> | 2023-05-24 15:19:05 +0100 |
| commit | 0ea5eb143c7a63105b4479c455642b4c4ef3278c (patch) | |
| tree | a90324c8f591cbd0a1ca8c911d6977bc5df12d65 /mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp | |
| parent | 2dad1249d2785b08ad21fb00b54721e125434cd8 (diff) | |
| download | llvm-0ea5eb143c7a63105b4479c455642b4c4ef3278c.zip llvm-0ea5eb143c7a63105b4479c455642b4c4ef3278c.tar.gz llvm-0ea5eb143c7a63105b4479c455642b4c4ef3278c.tar.bz2 | |
[RegisterCoalescer] Fix updating LiveIntervals in joinReservedPhysReg
Live intervals for physical registers are calculated lazily on demand.
In a case like this:
16B %0:gpr32 = IMPLICIT_DEF
32B $wzr = COPY %0
if the live interval for $wzr did not already exist then the update code
in joinReservedPhysReg would create it with a definition at 32B, which
would remain even after the COPY was deleted.
Differential Revision: https://reviews.llvm.org/D151314
Diffstat (limited to 'mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp')
0 files changed, 0 insertions, 0 deletions