http://llvm.org/bugs/show_bug.cgi?id=19168
Bug ID: 19168
Summary: Compiler doesn't canonicalize truncates in SCEV
expresions.
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 12246
--> http://llvm.org/bugs/attachment.cgi?id=12246&action=edit
Reproducer
LLVM doesn't perform a canonicalization of trunc expressions, and due to that
round-trip of normalization-denormalization cant yield an expression, different
from the original one. Post-Inc transformation gives-up in this case.
Attached is a test case revealing the issue.
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