[all-commits] [llvm/llvm-project] 0c1326: [BasicTTI] Avoid crash when costing scalable selec...
Philip Reames via All-commits
all-commits at lists.llvm.org
Thu Jun 23 09:15:15 PDT 2022
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: 0c1326748f6625b90b38ed800a1b90e77657a762
https://github.com/llvm/llvm-project/commit/0c1326748f6625b90b38ed800a1b90e77657a762
Author: Philip Reames <preames at rivosinc.com>
Date: 2022-06-23 (Thu, 23 Jun 2022)
Changed paths:
M llvm/include/llvm/CodeGen/BasicTTIImpl.h
A llvm/test/Analysis/CostModel/RISCV/rvv-select.ll
Log Message:
-----------
[BasicTTI] Avoid crash when costing scalable select expansion
If the target has chosen to expand a scalable vector type, BasicTTI tries to scalarize and we'd crash. As a minimum, we should return an invalid cost instead.
The added test provide coverage for the moment, but given they show a number of gaps in RISCV costing, they're likely not to cover this code path long term.
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