http://llvm.org/bugs/show_bug.cgi?id=19727
Bug ID: 19727
Summary: llvm creates a really large constantexpr and spends a
lot of time on it
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Interprocedural Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Created attachment 12510
--> http://llvm.org/bugs/attachment.cgi?id=12510&action=edit
testcase
This is some variation of PR15714.
This can be reproduced by running
./bin/opt -basicaa -inline -simplifycfg -instcombine -loop-rotate -licm
-indvars -gvn test.ll -o test.bc
Looks like the slow part is actually writing the bitcode.
Tested with r208570.
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