https://bugs.llvm.org/show_bug.cgi?id=48553
Bug ID: 48553
Summary: Large compile-time regression after 8b1c4e310c2f
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: florian_h...@apple.com
CC: llvm-bugs@lists.llvm.org
Created attachment 24302
--> https://bugs.llvm.org/attachment.cgi?id=24302&action=edit
slow.bc
After 8b1c4e310c2f the compile-time for
`MultiSource/Benchmarks/MiBench/consumer-lame` dramatically increases with -O3
& LTO.
The attached slow.bc has been reduced from the input with a time-limit of 30
seconds for opt. On current trunk, `bin/opt -O3 slow.bc` takes more than 30
seconds. With 8b1c4e310c2f reverted, it takes < 1 second.
I've not tried to run the full input until completion, so maybe it just takes a
very long time now.
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