[Bug target/71179] New: ice fold_convert_loc, at fold-const.c:2360

["dcb314 at hotmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71179

            Bug ID: 71179
           Summary: ice fold_convert_loc, at fold-const.c:2360
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Created attachment 38517
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38517&action=edit
gzipped C source code

The attached C code, when compiled by gcc trunk dated 20160518
and the flags -funsafe-math-optimizations -O2  -msse4.1 does this

../../plugins/dcp/dcp-sse4.c: In function ârender_SSE4â:
../../plugins/dcp/dcp-sse4.c:356:1: internal compiler error: in
fold_convert_loc, at fold-const.c:2360
0x901dc9 fold_convert_loc(unsigned int, tree_node*, tree_node*)
        ../../src/trunk/gcc/fold-const.c:2360
0xe0c79b transform_add_to_multiply
        ../../src/trunk/gcc/tree-ssa-reassoc.c:1815
0xe0c79b reassociate_bb
        ../../src/trunk/gcc/tree-ssa-reassoc.c:5190
0xe0af4f reassociate_bb
        ../../src/trunk/gcc/tree-ssa-reassoc.c:5278