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| author | Florian Hahn <flo@fhahn.com> | 2022-04-25 12:49:07 +0100 |
|---|---|---|
| committer | Florian Hahn <flo@fhahn.com> | 2022-04-25 12:49:08 +0100 |
| commit | 2fee8dd621bb11204451371f7ecbe40bfc71b282 (patch) | |
| tree | 1467c84e7a3c173149db06a53f02ea927dd36336 /llvm/lib/CodeGen/LiveDebugVariables.cpp | |
| parent | 7ddf39bc1d75e1624dce1374a1eb315843945690 (diff) | |
| download | llvm-2fee8dd621bb11204451371f7ecbe40bfc71b282.zip llvm-2fee8dd621bb11204451371f7ecbe40bfc71b282.tar.gz llvm-2fee8dd621bb11204451371f7ecbe40bfc71b282.tar.bz2 | |
[SimpleLoopUnswitch] Run LICM for nested unswitching tests.
When enabling freeze-loop-unswitch-cond the inserted freeze instruction
may block unswitching of parent loops if they get inserted in a block in
the parent loop (as the llvm::Loop-based invariance check only checks
whether an instruction is in a loop block or not).
In the optimization pipeline, LICM is responsible to hoist out loop
invariant instructions to enable further unswitching. Also run LICM for
nested unswitching tests in preparation for flipping the default of
freeze-loop-unswitch-cond.
Reviewed By: nikic
Differential Revision: https://reviews.llvm.org/D124251
Diffstat (limited to 'llvm/lib/CodeGen/LiveDebugVariables.cpp')
0 files changed, 0 insertions, 0 deletions