http://llvm.org/bugs/show_bug.cgi?id=21448
Bug ID: 21448
Summary: Loads are not combined across llvm.assume
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Scalar Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
I tried out the llvm.assume functionality and unfortunately it caused a rather
large regression in my test case because several loads were no longer combined
across the llvm.assume. I presume this is because LoadCombine does not know
that llvm.assume does not write to memory.
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