[Bug middle-end/55198] [4.8 Regression] libquadmath/math/fmaq.c:233:7: internal compiler error

["danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55198

--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> 2012-11-22 03:13:32 UTC ---
In expand_expr_real:

(gdb) p debug_rtx (orig_op0)
(mem/c:BLK (plus:SI (reg/f:SI 91 virtual-stack-vars)
        (const_int 48 [0x30])) [6 v+0 S16 A64])
$25 = 10
(gdb) p debug_rtx (op0)     
(mem/c:BLK (plus:SI (reg/f:SI 91 virtual-stack-vars)
        (const_int 48 [0x30])) [6 v+0 S16 A64])
$26 = 10
(gdb) p mode1
$27 = TFmode
(gdb) p must_force_mem
$28 = 1
(gdb) p offset
$29 = (tree) 0x0
(gdb) p mode2
$30 = BLKmode
(gdb) p bitpos
$31 = 0
(gdb) p bitsize
$32 = 128
(gdb) p modifier
$41 = EXPAND_MEMORY
(gdb) p target
$42 = (rtx) 0x0
(gdb) p ext_mode
$43 = TFmode

(gdb) bt
#0 
_Z18expand_expr_real_1P9tree_nodeP7rtx_def12machine_mode15expand_modifierPS2_
(exp=0x7af2d2a0, target=0x0, tmode=VOIDmode, modifier=EXPAND_MEMORY, 
    alt_rtl=0x0) at ../../gcc/gcc/expr.c:10006
#1  0x0045c3b8 in
_Z16expand_expr_realP9tree_nodeP7rtx_def12machine_mode15expand_modifierPS2_
(exp=0x7af2d2a0, target=0x0, tmode=VOIDmode, 
    modifier=EXPAND_MEMORY, alt_rtl=0x0) at ../../gcc/gcc/expr.c:7816
#2  0x0092f538 in
_ZL11expand_exprP9tree_nodeP7rtx_def12machine_mode15expand_modifier
(exp=0x7af2d2a0, target=0x0, mode=VOIDmode, modifier=EXPAND_MEMORY)
    at ../../gcc/gcc/expr.h:444
#3  0x00933588 in _ZL19expand_asm_operandsP9tree_nodeS0_S0_S0_S0_ij (
    string=0x7af6cf78, outputs=0x0, inputs=0x7af2e288, clobbers=0x0, 
    labels=0x0, vol=1, locus=2147483912) at ../../gcc/gcc/stmt.c:890
#4  0x00934698 in _Z15expand_asm_stmtP18gimple_statement_d (stmt=0x7af3c7e0)
    at ../../gcc/gcc/stmt.c:1153
#5  0x0028ad94 in _ZL20expand_gimple_stmt_1P18gimple_statement_d (
    stmt=0x7af3c7e0) at ../../gcc/gcc/cfgexpand.c:2150
#6  0x0028b554 in _ZL18expand_gimple_stmtP18gimple_statement_d (
    stmt=0x7af3c7e0) at ../../gcc/gcc/cfgexpand.c:2305
#7  0x00292b8c in _ZL25expand_gimple_basic_blockP15basic_block_defb (
    bb=0x7af42b00, disable_tail_calls=false) at ../../gcc/gcc/cfgexpand.c:4084
#8  0x00294ecc in gimple_expand_cfg() () at ../../gcc/gcc/cfgexpand.c:4603
#9  0x007ddd44 in _Z16execute_one_passP8opt_pass (
    pass=0x40033b20 <pass_expand>) at ../../gcc/gcc/passes.c:2327
---Type <return> to continue, or q <return> to quit---
#10 0x007de108 in _Z17execute_pass_listP8opt_pass (
    pass=0x40033b20 <pass_expand>) at ../../gcc/gcc/passes.c:2387
#11 0x002d6130 in _ZL15expand_functionP11cgraph_node (node=0x7aed22a0)
    at ../../gcc/gcc/cgraphunit.c:1641
#12 0x002d6718 in _ZL20expand_all_functionsv ()
    at ../../gcc/gcc/cgraphunit.c:1745
#13 0x002d7734 in _Z7compilev () at ../../gcc/gcc/cgraphunit.c:2043
#14 0x002d79ac in finalize_compilation_unit() ()
    at ../../gcc/gcc/cgraphunit.c:2120
#15 0x00079300 in _Z27c_write_global_declarationsv ()
    at ../../gcc/gcc/c/c-decl.c:10120
#16 0x00957404 in _ZL12compile_filev () at ../../gcc/gcc/toplev.c:559
#17 0x0095abbc in _ZL10do_compilev () at ../../gcc/gcc/toplev.c:1881
#18 0x0095aed0 in _Z11toplev_mainiPPc (argc=14, argv=0x7eff052c)
    at ../../gcc/gcc/toplev.c:1957
#19 0x00dc62c4 in main (argc=14, argv=0x7eff052c) at ../../gcc/gcc/main.c:36
(gdb) c
Continuing.

Breakpoint 9,
_Z18expand_expr_real_1P9tree_nodeP7rtx_def12machine_mode15expand_modifierPS2_
(exp=0x7af2d2a0, target=0x0, tmode=VOIDmode, 
    modifier=EXPAND_MEMORY, alt_rtl=0x0) at ../../gcc/gcc/expr.c:10011
10011            if (TREE_CODE (type) == RECORD_TYPE && BYTES_BIG_ENDIAN
(gdb) p debug_rtx (op0)
(reg:TF 767)
$44 = 10

Think the problem is this asm operand is being treated as bitfield.