[Bug tree-optimization/37574] [4.4 Regression] ICE with the vectorizer and GC

[jakub at gcc dot gnu dot org]

------- Comment #1 from jakub at gcc dot gnu dot org  2008-09-19 13:58 -------
The problem is const_vector_from_tree called on:
 <vector_cst 0x7ffff3375e10
    type <vector_type 0x7ffff33ed540 __vector signed int
        type <integer_type 0x7ffff332d540 int sizes-gimplified public SI
            size <integer_cst 0x7ffff3319930 constant 32>
            unit size <integer_cst 0x7ffff33195a0 constant 4>
            align 32 symtab 0 alias set -1 canonical type 0x7ffff332d540
precision 32 min <integer_cst 0x7ffff33198a0 -2147483648> max <integer_cst
0x7ffff33198d0 2147483647>
            pointer_to_this <pointer_type 0x7ffff333c9c0>>
        V4SI
        size <integer_cst 0x7ffff3319c90 constant 128>
        unit size <integer_cst 0x7ffff3319cc0 constant 16>
        align 128 symtab 0 alias set -1 canonical type 0x7ffff33ed540 nunits 4>
    constant
    elt0:  <integer_cst 0x7ffff3352570 type <integer_type 0x7ffff332d540 int>
constant 3> elt1:  <integer_cst 0x7ffff3352570 3> elt2:  <integer_cst
0x7ffff3352570 3> elt3:  <integer_cst 0x7ffff3352570 3> elt4:  <integer_cst
0x7ffff3352570 3> elt5:  <integer_cst 0x7ffff3352570 3> elt6:  <integer_cst
0x7ffff3352570 3> elt7:  <integer_cst 0x7ffff3352570 3>>

Note V4SImode, yet 8 elements.  This allocates a vector with rtvec_alloc (4),
yet fills in 8 elements.  Looking what creates it.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37574