[Bug c++/60969] New: ICE in output_129 in MMXMOV of mode MODE_SF for march=pentium4

[mliska at suse dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60969

            Bug ID: 60969
           Summary: ICE in output_129 in MMXMOV of mode MODE_SF for
                    march=pentium4
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mliska at suse dot cz

g++ -O2 pentium.cpp -c -ftree-vectorize -march=pentium4 -m32

BT:
#0  output_129 (operands=0x1413ac0 <recog_data>, insn=0x7ffff6e0d948) at
../../gcc/config/i386/i386.md:3177
#1  0x00000000007805e2 in final_scan_insn (insn=insn@entry=0x7ffff6e0d948,
file=file@entry=0x14c7370, optimize_p=optimize_p@entry=2,
nopeepholes=nopeepholes@entry=0, seen=seen@entry=0x7fffffffd55c) at
../../gcc/final.c:2918
#2  0x0000000000780ec7 in final (first=0x7ffff6dbc5c0, file=0x14c7370,
optimize_p=2) at ../../gcc/final.c:2023
#3  0x00000000007810f6 in rest_of_handle_final () at ../../gcc/final.c:4427
#4  (anonymous namespace)::pass_final::execute (this=<optimized out>) at
../../gcc/final.c:4502
#5  0x00000000008b3dba in execute_one_pass (pass=pass@entry=0x14a26c0) at
../../gcc/passes.c:2229
#6  0x00000000008b4006 in execute_pass_list (pass=0x14a26c0) at
../../gcc/passes.c:2282
#7  0x00000000008b4018 in execute_pass_list (pass=0x14a1940) at
../../gcc/passes.c:2283
#8  0x00000000008b4018 in execute_pass_list (pass=0x14a0800) at
../../gcc/passes.c:2283
#9  0x00000000006dccf6 in expand_function (node=node@entry=0x7ffff6dada40) at
../../gcc/cgraphunit.c:1774
#10 0x00000000006de5ed in expand_all_functions () at
../../gcc/cgraphunit.c:1908
#11 compile () at ../../gcc/cgraphunit.c:2252
#12 0x00000000006dea45 in finalize_compilation_unit () at
../../gcc/cgraphunit.c:2329
#13 0x00000000005940ec in cp_write_global_declarations () at
../../gcc/cp/decl2.c:4611
#14 0x000000000094dd9d in compile_file () at ../../gcc/toplev.c:562
#15 0x000000000094f970 in do_compile () at ../../gcc/toplev.c:1914
#16 toplev_main (argc=19, argv=0x7fffffffd8c8) at ../../gcc/toplev.c:1990
#17 0x00007ffff6e4ebe5 in __libc_start_main () from /lib64/libc.so.6
#18 0x000000000052c9a1 in _start () at ../sysdeps/x86_64/start.S:122

$ cat pentium4.cpp:

struct A
{
    float f0, f1, f2, f3;
    A() { }
    A(float v0, float v1, float v2)
        : f0(v0), f1(v1), f2(v2), f3(0.0f)
    {
    }
    A method(A & a, float t)
    {
        return A (f0 + a.f0 * t, f1 + a.f1 * t, f2 + a.f2 * t);
    }
};

A function(A & v1, A & v2, float t)
{
    return v1.method (v2, t);
}

void Foo(A & a1, A & a2, A & a3, A & a4, int i1, int i2)
{
    int MIN_TRIGGER = 7; // set below 7 and it compiles ok
    A * x = new A[i1 * i2];
    for (int i = 0; i < MIN_TRIGGER; i++) {
         A a1 = function (a1, a3, i / (float)i2);
         A a2 = function (a2, a4, i / (float)i2);
        for (int j = 0; j < MIN_TRIGGER; j++)
            x[i * i1 + j] = function (a1, a2, j / (float)i1);
    }
}