https://bugs.llvm.org/show_bug.cgi?id=48072
Bug ID: 48072
Summary: Assertion `&*ALI == *AAI && "Not the same accesses in
the same order"' failed.
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: mikael.hol...@ericsson.com
CC: llvm-bugs@lists.llvm.org
Created attachment 24134
--> https://bugs.llvm.org/attachment.cgi?id=24134&action=edit
bbi-49235.ll reproducer
With
opt -S -o - bbi-49235.ll -memoryssa -gvn -dse -verify-memoryssa
I hit
opt: ../lib/Analysis/MemorySSA.cpp:2063: void
llvm::MemorySSA::verifyOrderingDominationAndDefUses(llvm::Function &) const:
Assertion `&*ALI == *AAI && "Not the same accesses in the same order"' failed.
This starts happening with 51ff04567b2f:
Recommit "[DSE] Switch to MemorySSA-backed DSE by default."
After investigation by @asbirlea, the issue that caused the
revert appears to be an issue in the original source, rather
than a problem with the compiler.
This patch enables MemorySSA DSE again.
This reverts commit 915310bf14cbac58a81fd60e0fa9dc8d341108e2.
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