[Bug ada/103785] New: [12 Regression] Ada LTO+PGO bootstrap ICEs on i586

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103785

            Bug ID: 103785
           Summary: [12 Regression] Ada LTO+PGO bootstrap ICEs on i586
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---

The bootstrap ends with:

[ 4274s] +===========================GNAT BUG
DETECTED==============================+
[ 4274s] | 12.0.0 20211220 (experimental) [revision
b3f58f87d78b958e35e4a44f5fdb4b7721cb2837] (i586-suse-linux) |
[ 4274s] | Storage_Error stack overflow or erroneous memory access             
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[ 4274s] | Error detected at system.ads:106:30                                 
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[ 4274s] | Compiling ../../gcc/ada/ali.adb                                     
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[ 4274s] | Please submit a bug report; see https://gcc.gnu.org/bugs/ .         
    |
[ 4274s] | Use a subject line meaningful to you and us to track the bug.       
    |
[ 4274s] | Include the entire contents of this bug box in the report.          
    |
[ 4274s] | Include the exact command that you entered.                         
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[ 4274s] | Also include sources listed below.                                  
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[ 4274s]
+==========================================================================+

g:8d1e342b4afbad77cb92f8057cf6d1e996bfb077 is fine, while
g:b3f58f87d78b958e35e4a44f5fdb4b7721cb2837 fails.