On x86_64-apple-darwin13, the test gcc.dg/graphite/isl-codegen-loop-dumping.c
gives an ICE with -m32 after r212455. The backtrace is

* thread #1: tid = 0xdac306, 0x0000000100523c52 cc1`fold_binary_loc(loc=0, 
code=MINUS_EXPR, type=0x0000000000000000, op0=0x0000000142c09bd0, 
op1=0x0000000142c1b048) + 6402 at fold-const.c:10813, queue = 
'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
    frame #0: 0x0000000100523c52 cc1`fold_binary_loc(loc=0, code=MINUS_EXPR, 
type=0x0000000000000000, op0=0x0000000142c09bd0, op1=0x0000000142c1b048) + 6402 
at fold-const.c:10813
   10810              if (TREE_CODE (type) != COMPLEX_TYPE
   10811                  && TREE_CODE (arg0) == NEGATE_EXPR
   10812                  && integer_onep (arg1)
-> 10813                  && !TYPE_OVERFLOW_TRAPS (type))
   10814                return fold_build1_loc (loc, BIT_NOT_EXPR, type,
   10815                                    fold_convert_loc (loc, type,
   10816                                                      TREE_OPERAND 
(arg0, 0)));
(lldb) bt
* thread #1: tid = 0xdac306, 0x0000000100523c52 cc1`fold_binary_loc(loc=0, 
code=MINUS_EXPR, type=0x0000000000000000, op0=0x0000000142c09bd0, 
op1=0x0000000142c1b048) + 6402 at fold-const.c:10813, queue = 
'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
  * frame #0: 0x0000000100523c52 cc1`fold_binary_loc(loc=0, code=MINUS_EXPR, 
type=0x0000000000000000, op0=0x0000000142c09bd0, op1=0x0000000142c1b048) + 6402 
at fold-const.c:10813
    frame #1: 0x0000000100549c2b cc1`fold_build2_stat_loc(loc=0, 
code=MINUS_EXPR, type=0x0000000000000000, op0=0x0000000142c09bd0, 
op1=0x0000000142c1b048) + 27 at fold-const.c:14985
    frame #2: 0x00000001005ff9a1 cc1`gcc_expression_from_isl_expression + 417 
at graphite-isl-ast-to-gimple.c:175
    frame #3: 0x00000001005ff800 cc1`gcc_expression_from_isl_expression + 928
    frame #4: 0x00000001005ff818 cc1`gcc_expression_from_isl_expression + 24 at 
graphite-isl-ast-to-gimple.c:164
    frame #5: 0x00000001005ff800 cc1`gcc_expression_from_isl_expression + 928
    frame #6: 0x00000001005ffd26 cc1`translate_isl_ast + 229 at 
graphite-isl-ast-to-gimple.c:501
    frame #7: 0x00000001005ffc41 cc1`translate_isl_ast + 17
    frame #8: 0x00000001005ffc30 
cc1`translate_isl_ast(context_loop=0x0000000142c031a0, node=0x0000000141f1acd0, 
next_e=0x0000000142d36f50, ip=0x00007fff5fbfeff0) + 128
    frame #9: 0x000000010060047c 
cc1`graphite_regenerate_ast_isl(scop=<unavailable>) + 844 at 
graphite-isl-ast-to-gimple.c:699
    frame #10: 0x00000001005f8a28 cc1`graphite_transform_loops() + 2280 at 
graphite.c:304
    frame #11: 0x00000001005f8ab1 cc1`execute(this=<unavailable>, 
fun=<unavailable>) + 33 at graphite.c:333
    frame #12: 0x0000000100783097 cc1`execute_one_pass(pass=0x0000000141e10f40) 
+ 407 at passes.c:2149
    frame #13: 0x000000010078368e 
cc1`execute_pass_list_1(pass=0x0000000141e10f40) + 30 at passes.c:2201
    frame #14: 0x00000001007836a0 
cc1`execute_pass_list_1(pass=0x0000000141e10ee0) + 48 at passes.c:2202
    frame #15: 0x00000001007836a0 
cc1`execute_pass_list_1(pass=0x0000000141e10ac0) + 48 at passes.c:2202
    frame #16: 0x00000001007836a0 
cc1`execute_pass_list_1(pass=0x0000000141e0fa40) + 48 at passes.c:2202
    frame #17: 0x00000001007836e9 cc1`execute_pass_list(fn=0x0000000142d1c738, 
pass=0x0000000141e0f980) + 25 at passes.c:2212
    frame #18: 0x00000001003ee215 cc1`expand_function(node=0x0000000142d3b000) 
+ 245 at cgraphunit.c:1786
    frame #19: 0x00000001003f0847 cc1`compile() + 230 at cgraphunit.c:1920
    frame #20: 0x00000001003f0761 cc1`compile() + 2209
    frame #21: 0x00000001003f1026 cc1`finalize_compilation_unit() + 102 at 
cgraphunit.c:2341
    frame #22: 0x0000000100020d55 cc1`c_write_global_declarations() + 613 at 
c-decl.c:10463
    frame #23: 0x000000010085cc97 cc1`compile_file + 167 at toplev.c:562
    frame #24: 0x000000010085f43f cc1`toplev_main(argc=7, 
argv=0x00007fff5fbff390) + 3327 at toplev.c:1946

TIA

Dominique

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