[Bug tree-optimization/102179] New: ICE during dom: tree check: expected ssa_name, have integer_cst

[jamborm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102179

            Bug ID: 102179
           Summary: ICE during dom: tree check: expected ssa_name, have
                    integer_cst
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jamborm at gcc dot gnu.org
            Blocks: 26163
  Target Milestone: ---
              Host: x86_64-linux
            Target: x86_64-linux

When compiling the following fortran code derived from 416.gamess with -Ofast
-mavx2, I get an ICE (on revision r12-3290-g21b4d0ef543d68):

mjambor@virgil:/tmp/bug$ cat bug.f90 
      SUBROUTINE MMPINP(CPINP,CDINP,CFINP)
      PARAMETER MXGTOT=2047320
      DIMENSION CPINP(*),CDINP(*),CFINP(*)
      COMMON CF(MXGTOT)
      IGAUSS = ICNTR()
          ITYP   = KTYPV()
          DO 260 I = 1,IGAUSS
            K = I
            IF (ITYP.EQ.1) THEN
            ELSE IF (ITYP.EQ.3) THEN 
                CDINP(K) = 0
            ELSE IF (ITYP.EQ.4) THEN 
            ELSE IF (ITYP.EQ.6) THEN
                CPINP(K) = 0
            ELSE
                STOP
            END IF
            IF (IGAUSS.EQ.1) THEN
              CFINP(K) = ONE
            ENDIF
            CF(K) = CFINP0
  260    CONTINUE
      END
mjambor@virgil:/tmp/bug$ ~/gcc/trunk/inst/bin/gfortran -std=legacy -Ofast
-mavx2 -S ./bug.f90 
during GIMPLE pass: dom
./bug.f90:1:23:

    1 |       SUBROUTINE MMPINP(CPINP,CDINP,CFINP)
      |                       ^
internal compiler error: tree check: expected ssa_name, have integer_cst in
cprop_operand, at tree-ssa-dom.c:1715
0x132bb01 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
        /home/mjambor/gcc/trunk/src/gcc/tree.c:8688
0x10de0fb tree_check(tree_node*, char const*, int, char const*, tree_code)
        /home/mjambor/gcc/trunk/src/gcc/tree.h:3395
0x10de0fb cprop_operand
        /home/mjambor/gcc/trunk/src/gcc/tree-ssa-dom.c:1715
0x10deca9 cprop_into_stmt
        /home/mjambor/gcc/trunk/src/gcc/tree-ssa-dom.c:1792
0x10e1ff2 dom_opt_dom_walker::optimize_stmt(basic_block_def*,
gimple_stmt_iterator*, bool*)
        /home/mjambor/gcc/trunk/src/gcc/tree-ssa-dom.c:2002
0x10e4017 dom_opt_dom_walker::before_dom_children(basic_block_def*)
        /home/mjambor/gcc/trunk/src/gcc/tree-ssa-dom.c:1430
0x1d98404 dom_walker::walk(basic_block_def*)
        /home/mjambor/gcc/trunk/src/gcc/domwalk.c:309
0x10e471c execute
        /home/mjambor/gcc/trunk/src/gcc/tree-ssa-dom.c:764
Please submit a full bug report,


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)