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List:       gcc-bugs
Subject:    [Bug target/86758] New: [9 Regression] ICE in replace_stmt compiling gcc.target/i386/pr84309.c
From:       "msebor at gcc dot gnu.org" <gcc-bugzilla () gcc ! gnu ! org>
Date:       2018-07-31 17:14:27
Message-ID: bug-86758-4 () http ! gcc ! gnu ! org/bugzilla/
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86758

            Bug ID: 86758
           Summary: [9 Regression] ICE in replace_stmt compiling
                    gcc.target/i386/pr84309.c
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: msebor at gcc dot gnu.org
  Target Milestone: ---

The following ICE has popped up in recent x86_64-linux test suite runs:

$ gcc -Ofast -S -Wall -mavx -mno-avx2
/ssd/src/gcc/svn/gcc/testsuite/gcc.target/i386/pr84309.c
during GIMPLE pass: vect
/ssd/src/gcc/svn/gcc/testsuite/gcc.target/i386/pr84309.c: In function ‘foo':
/ssd/src/gcc/svn/gcc/testsuite/gcc.target/i386/pr84309.c:10:1: internal
compiler error: in replace_stmt, at tree-vectorizer.c:611
 foo (void)
 ^~~
0x13c2922 vec_info::replace_stmt(gimple_stmt_iterator*, _stmt_vec_info*,
gimple*)
        /ssd/src/gcc/svn/gcc/tree-vectorizer.c:611
0x13657fb vectorizable_simd_clone_call
        /ssd/src/gcc/svn/gcc/tree-vect-stmts.c:4375
0x1378f28 vect_transform_stmt(_stmt_vec_info*, gimple_stmt_iterator*, bool*,
_slp_tree*, _slp_instance*)
        /ssd/src/gcc/svn/gcc/tree-vect-stmts.c:9758
0x139c58b vect_transform_loop_stmt
        /ssd/src/gcc/svn/gcc/tree-vect-loop.c:8263
0x139d20d vect_transform_loop(_loop_vec_info*)
        /ssd/src/gcc/svn/gcc/tree-vect-loop.c:8477
0x13c3817 try_vectorize_loop_1
        /ssd/src/gcc/svn/gcc/tree-vectorizer.c:945
0x13c3a9d try_vectorize_loop
        /ssd/src/gcc/svn/gcc/tree-vectorizer.c:998
0x13c3c78 vectorize_loops()
        /ssd/src/gcc/svn/gcc/tree-vectorizer.c:1077
0x1252263 execute
        /ssd/src/gcc/svn/gcc/tree-ssa-loop.c:414
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.=
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