http://llvm.org/bugs/show_bug.cgi?id=11455
Bug #: 11455
Summary: Dead store elimination kills non-dead store as part of
memcpy
Product: libraries
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: release blocker
Priority: P
Component: Scalar Optimizations
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 7657
--> http://llvm.org/bugs/attachment.cgi?id=7657
Test case
Changeset 144239 introduced more aggressive DSE. This created a codegen bug
shown in the attached input. With -O2 for AMD64, tf->tf_rdi is no longer
copied.
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