https://bugs.llvm.org/show_bug.cgi?id=33876
Bug ID: 33876
Summary: RegionInfo is not updated correctly in polly-prepare
Product: Polly
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Other
Assignee: polly-...@googlegroups.com
Reporter: philip.pfa...@gmail.com
CC: llvm-bugs@lists.llvm.org
Created attachment 18829
--> https://bugs.llvm.org/attachment.cgi?id=18829&action=edit
Lit testcase
In polly-prepare we split the entry block of a function, and subsequently
update and preserved a precomputed RegionInfo, if it exists. The attached
testcase demonstrates this. If -region is run after -polly-prepare, the
resulting region tree looks like this:
[0] entry => <Function Return>
[1] entry.split => for.end
[2] for.cond => for.end
If -region is run before, the region tree is this:
[0] entry => <Function Return>
[1] entry => for.end
[2] for.cond => for.end
This is the correct tree before the split, but it is not correct after. The
expected result should be the same as above. If -region runs before the
CodePreparation pass, the CodePreparation pass will try to update it.
- Philip
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
