[llvm] [Loads] Fix crash in isSafeToLoadUnconditionally with scalable accessed type (PR #82650)

[Luke Lau via llvm-commits]

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@@ -0,0 +1,22 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
+; RUN: opt < %s -passes=vector-combine -S -mtriple=riscv32 -mattr=+v | FileCheck %s -check-prefixes=CHECK,RV32
+; RUN: opt < %s -passes=vector-combine -S -mtriple=riscv64 -mattr=+v | FileCheck %s -check-prefixes=CHECK,RV64
+
+define void @fixed_load_scalable_src() {
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lukel97 wrote:

`VectorCombine::widenSubvectorLoad` triggers the crash here when calling `isSafeToLoadUnconditionally`. Let me know if there's a better place to test for this!

https://github.com/llvm/llvm-project/pull/82650