http://llvm.org/bugs/show_bug.cgi?id=7270
Summary: DSE wrongly eliminates store, related to byval
Product: new-bugs
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Created an attachment (id=4955)
--> (http://llvm.org/bugs/attachment.cgi?id=4955)
testcase .ll
This miscompilation occurs when building LLVM with dragonegg on x86-32.
Before running dse, the incoming parameters %arg1 and %arg2 are copied to
the locals %CS1 and %CS2, and then %CS1 and %CS2 are passed as the call
parameters to _ZN4llvm13AliasAnalysis13getModRefInfoENS_8CallSiteES1_.
After running "opt -dse", the copies are no longer made, and the uninitialized
values of %CS1 and %CS2 are passed instead.
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