https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69069
Bug ID: 69069 Summary: missing phi argument with -ftree-parallelize-loops=2 Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: vries at gcc dot gnu.org Target Milestone: --- Created attachment 37175 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37175&action=edit files.tgz ... $ gcc -S -O2 -gnatp g-debpoo.adb -ftree-parallelize-loops=2 g-debpoo.adb: In function GNAT.DEBUG_POOLS.PRINT_INFO_STDOUT.INTERNAL�: g-debpoo.adb:1713:4: error: PHI argument is missing for edge 108->136 for PHI node .MEM_765 = PHI <(108), (135)> +===========================GNAT BUG DETECTED==============================+ | 6.0.0 20151215 (experimental) (x86_64-pc-linux-gnu) verify_ssa failed | | Error detected around g-debpoo.adb:1713:4 | | Please submit a bug report; see http://gcc.gnu.org/bugs.html. | | Use a subject line meaningful to you and us to track the bug. | | Include the entire contents of this bug box in the report. | | Include the exact command that you entered. | | Also include sources listed below. | +==========================================================================+ raised TYPES.UNRECOVERABLE_ERROR : comperr.adb:406 ...