http://llvm.org/bugs/show_bug.cgi?id=11692
Bug #: 11692
Summary: An alloca that is never used for anything but updating
itself is not optimized away
Product: new-bugs
Version: 3.0
Platform: PC
OS/Version: Linux
Status: NEW
Keywords: code-quality
Severity: enhancement
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 7829
--> http://llvm.org/bugs/attachment.cgi?id=7829
example showing the behaviour
An alloca that is never used for anything but updating itself is not optimized
away in the attached example. This depends on the size of the array. When I
tested it then it was optimized away if the size of the array was <= 21 and not
optimized away otherwise.
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