[Bug tree-optimization/56618] New: inline assembler with too many lines causes ICE in account_size_time, at ipa-inline-analysis.c

[andi-gcc at firstfloor dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56618



             Bug #: 56618

           Summary: inline assembler with too many lines causes ICE in

                    account_size_time, at ipa-inline-analysis.c

    Classification: Unclassified

           Product: gcc

           Version: unknown

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: tree-optimization

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: andi-...@firstfloor.org





A 6.4 mio lines inline assembler statement (happened in some auto generated

real code) causes an overflow in the inliner cost estimation per cpu, resulting

in a ICE.



Reproducer



#!/usr/bin/python

print "int foo(void) {"

print "  asm("

for i in range(6400000):

    print r'    "\n"'

print "  );"

print "}"



./longasm.py > l.c



gcc l.c



Observed back to 4.7 at least, but much older compilers should be ok. So it's a

regression



Patch has been posted at 

http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg50027.html

There was some discussion, but no approval