[Bug target/35193] [4.3 Regression] can't find a register in class 'R1_REGS' while reloading 'asm'

[danglin at gcc dot gnu dot org]

------- Comment #4 from danglin at gcc dot gnu dot org  2008-02-17 18:10 -------
Breakpoint 1, spill_failure (insn=0xea8a90, class=NO_REGS)
    at ../../gcc/gcc/reload1.c:1986
1986      if (asm_noperands (PATTERN (insn)) >= 0)
(gdb) p debug_rtx ($r26)
(insn 963 1588 964 132
../ports/sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h:220 (parallel [
            (set (mem/v/c/i:SI (plus:SI (reg/f:SI 3 %r3)
                        (const_int 24 [0x18])) [3 lws_ret+0 S4 A64])
                (asm_operands/v:SI ("0:
        copy    %3, %%r26
        copy    %4, %%r25
        copy    %5, %%r24
        ble     0xb0(%%sr2, %%r0)
        ldi     0, %%r20
        cmpib,=,n 11,%%r21,0b
        nop
        stw     %%r28, %0
        sub     %%r0, %%r21, %%r21
        stw     %%r21, %1
        ") ("=m") 0 [
                        (reg/f:SI 743)
                        (reg/f:SI 29 %r29 [orig:218 prephitmp.374 ] [218])
                        (reg:SI 19 %r19 [588])
                    ]
                     [
                        (asm_input:SI ("r") 0)
                        (asm_input:SI ("r") 0)
                        (asm_input:SI ("r") 0)
                    ] 333103))
            (set (mem/v/c/i:SI (plus:SI (reg/f:SI 3 %r3)
                        (const_int 20 [0x14])) [3 lws_errno+0 S4 A32])
                (asm_operands/v:SI ("0:
        copy    %3, %%r26
        copy    %4, %%r25
        copy    %5, %%r24
        ble     0xb0(%%sr2, %%r0)
        ldi     0, %%r20
        cmpib,=,n 11,%%r21,0b
        nop
        stw     %%r28, %0
        sub     %%r0, %%r21, %%r21
        stw     %%r21, %1
        ") ("=m") 1 [
                        (reg/f:SI 743)
                        (reg/f:SI 29 %r29 [orig:218 prephitmp.374 ] [218])
                        (reg:SI 19 %r19 [588])
                    ]
                     [
                        (asm_input:SI ("r") 0)
                        (asm_input:SI ("r") 0)
                        (asm_input:SI ("r") 0)
                    ] 333103))
            (set (mem/c/i:SI (reg/f:SI 743) [3 lock+0 S4 A32])
                (asm_operands/v:SI ("0:
        copy    %3, %%r26
        copy    %4, %%r25
        copy    %5, %%r24
        ble     0xb0(%%sr2, %%r0)
        ldi     0, %%r20
        cmpib,=,n 11,%%r21,0b
        nop
        stw     %%r28, %0
        sub     %%r0, %%r21, %%r21
        stw     %%r21, %1
        ") ("=m") 2 [
                        (reg/f:SI 743)
                        (reg/f:SI 29 %r29 [orig:218 prephitmp.374 ] [218])
                        (reg:SI 19 %r19 [588])
                    ]
                     [
                        (asm_input:SI ("r") 0)
                        (asm_input:SI ("r") 0)
                        (asm_input:SI ("r") 0)
                    ] 333103))
            (clobber (mem:BLK (scratch) [0 A8]))
            (clobber (reg:QI 31 %r31))
            (clobber (reg:QI 28 %r28))
            (clobber (reg:QI 20 %r20))
            (clobber (reg:QI 21 %r21))
            (clobber (reg:QI 22 %r22))
            (clobber (reg:QI 23 %r23))
            (clobber (reg:QI 24 %r24))
            (clobber (reg:QI 25 %r25))
            (clobber (reg:QI 26 %r26))
            (clobber (reg:QI 1 %r1))
        ]) -1 (expr_list:REG_DEAD (reg:SI 19 %r19 [588])
        (expr_list:REG_DEAD (reg/f:SI 29 %r29 [orig:218 prephitmp.374 ] [218])
            (expr_list:REG_UNUSED (reg:QI 31 %r31)
                (expr_list:REG_UNUSED (reg:QI 28 %r28)
                    (expr_list:REG_UNUSED (reg:QI 26 %r26)
                        (expr_list:REG_UNUSED (reg:QI 25 %r25)
                            (expr_list:REG_UNUSED (reg:QI 24 %r24)
                                (expr_list:REG_UNUSED (reg:QI 23 %r23)
                                    (expr_list:REG_UNUSED (reg:QI 22 %r22)
                                        (expr_list:REG_UNUSED (reg:QI 21 %r21)
                                            (expr_list:REG_UNUSED (reg:QI 20
%r20)
                                                (expr_list:REG_UNUSED (reg:QI 1
%r1)
                                                    (nil))))))))))))))
$4 = void


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35193