[llvm-bugs] [Bug 43324] New: Adding "minsize" attribute to function increases size of opt output 15 times

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43324

            Bug ID: 43324
           Summary: Adding "minsize" attribute to function increases size
                    of opt output 15 times
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: mikael.holmen at ericsson.com
                CC: llvm-bugs at lists.llvm.org

If we run opt like this:

opt -disable-basicaa -licm -loop-unroll -O1 -unroll-threshold=0 -o
bbi-32266_2.opt.bc bbi-32266_2.ll

and check the size of the output bbi-32266_2.opt.bc I get

-rw-r--r-- 1 uabelho eusers 203308 sep 16 13:09 bbi-32266_2.opt.bc

Then, if I just add a "minsize" attribute to function main in the input
and run opt the same way, I instead get this output:

-rw-r--r-- 1 uabelho eusers 3177960 sep 16 13:12 ./bbi-32266_2.opt.bc

So, adding "minsize" makes the size of the program increase around 15 times.

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