[all-commits] [llvm/llvm-project] eaede4: [DAG] extractShiftForRotate - replace assertion fo...
Simon Pilgrim via All-commits
all-commits at lists.llvm.org
Wed Aug 31 07:51:12 PDT 2022
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: eaede4b5b7cfc13ca0e484b4cb25b2f751d86fd9
https://github.com/llvm/llvm-project/commit/eaede4b5b7cfc13ca0e484b4cb25b2f751d86fd9
Author: Simon Pilgrim <llvm-dev at redking.me.uk>
Date: 2022-08-31 (Wed, 31 Aug 2022)
Changed paths:
M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
A llvm/test/CodeGen/X86/pr57474.ll
Log Message:
-----------
[DAG] extractShiftForRotate - replace assertion for shift opcode with an early-out
We feed the result from the first extractShiftForRotate call into the second, and that result might no longer be a shift op (usually due to constant folding).
NOTE: We REALLY need to stop creating nodes on the fly inside extractShiftForRotate!
Fixes Issue #57474
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