https://bugs.llvm.org/show_bug.cgi?id=40782
Bug ID: 40782
Summary: [Loop unswitch + MemSSA Loop Dep] Assertion "Trying
to remove memory access that still has uses"' failed.
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Created attachment 21495
--> https://bugs.llvm.org/attachment.cgi?id=21495&action=edit
reduced testcase
bin/opt -mtriple=systemz-unknown -mcpu=z13 ./tc_rem_stilluses.ll -O3 -S -o
out.opt.ll -enable-mssa-loop-dependency -enable-simple-loop-unswitch
lib/Analysis/MemorySSA.cpp:1714: void
llvm::MemorySSA::removeFromLookups(llvm::MemoryAccess*): Assertion
`MA->use_empty() && "Trying to remove memory access that still has uses"'
failed.
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