https://llvm.org/bugs/show_bug.cgi?id=25897
Bug ID: 25897
Summary: MemoryDependenceAnalysis scales badly
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Global Analyses
Assignee: unassignedb...@nondot.org
Reporter: jo...@netbsd.org
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 15503
--> https://llvm.org/bugs/attachment.cgi?id=15503&action=edit
Reduced test case
Compile the attached test case with -O2. Observe nearly all time spend in GVN
and more specifically, MemoryDependenceAnalysis and
getNonLocalPointerDepFromBB.
Originally test case is significantly larger and doesn't finish in any
reasonable time frame.
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