Re: optimization/4120: "Unable to find a register to spill" with -fschedule-insns

Re: optimization/4120: "Unable to find a register to spill" with -fschedule-insns

[rth]

Synopsis: "Unable to find a register to spill" with -fschedule-insns

State-Changed-From-To: open->closed
State-Changed-By: rth
State-Changed-When: Wed Apr  3 09:59:35 2002
State-Changed-Why:
    http://gcc.gnu.org/ml/gcc-patches/2002-04/msg00117.html

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=4120

Re: optimization/4120: "Unable to find a register to spill" with -fschedule-insns

[rth]

Synopsis: "Unable to find a register to spill" with -fschedule-insns

Responsible-Changed-From-To: unassigned->rth
Responsible-Changed-By: rth
Responsible-Changed-When: Tue Apr  2 23:17:20 2002
Responsible-Changed-Why:
    .

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=4120

optimization/4120: "Unable to find a register to spill" with -fschedule-insns

[toasty]

>Number:         4120
>Category:       optimization
>Synopsis:       "Unable to find a register to spill" with -fschedule-insns
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 24 14:16:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Kevin Day
>Release:        gcc version 3.0.1
>Organization:
>Environment:
Reading specs from /usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/specs
Configured with: ./..//gcc-3.0.1/configure --disable-nls --with-gnu-as --with-gnu-ld --with-gxx-include-dir=/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/g++ --disable-shared --prefix=/usr/local i386-unknown-freebsd4.2
Thread model: posix
gcc version 3.0.1
>Description:
test.c: In function `fattr3* NH_FATTR3(fattr3*)':
test.c:29: Unable to find a register to spill in class `AREG'.
test.c:29: This is the insn:
(insn 51 92 21 (set (reg/v:HI 45)
        (mem/s:HI (plus:SI (reg/v/f:SI 1 edx [42])
                (const_int 8 [0x8])) 3)) 39 {*movhi_1} (insn_list 6 (nil))
    (nil))
test.c:29: confused by earlier errors, bailing out
>How-To-Repeat:
g++ -O2 -finline-functions -fschedule-insns -march=pentium test.ii -c
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: text/plain; name="test.ii"
Content-Disposition: inline; filename="test.ii"

# 18 "test.c"
# 1 "../../../common/includes/nfsc_utils.h" 1





# 1 "../../../common/includes/nfss.h" 1





# 1 "../../../common/includes/ika_com_types.h" 1
# 56 "../../../common/includes/ika_com_types.h"
# 1 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 1 3
# 54 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 3
# 1 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/cdefs.h" 1 3
# 55 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 2 3


# 1 "/usr/include/sys/inttypes.h" 1 3
# 9 "/usr/include/sys/inttypes.h" 3
# 1 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/machine/ansi.h" 1 3
# 112 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/machine/ansi.h" 3
typedef int __attribute__((__mode__(__DI__))) __int64_t;
typedef unsigned int __attribute__((__mode__(__DI__))) __uint64_t;
# 124 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/machine/ansi.h" 3
typedef signed char __int8_t;
typedef unsigned char __uint8_t;
typedef short __int16_t;
typedef unsigned short __uint16_t;
typedef int __int32_t;
typedef unsigned int __uint32_t;

typedef int __intptr_t;
typedef unsigned int __uintptr_t;
# 10 "/usr/include/sys/inttypes.h" 2 3

typedef __int8_t int8_t;
typedef __int16_t int16_t;
typedef __int32_t int32_t;
typedef __int64_t int64_t;

typedef __uint8_t uint8_t;
typedef __uint16_t uint16_t;
typedef __uint32_t uint32_t;
typedef __uint64_t uint64_t;

typedef __intptr_t intptr_t;
typedef __uintptr_t uintptr_t;
# 58 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 2 3
# 1 "/usr/include/machine/types.h" 1 3
# 41 "/usr/include/machine/types.h" 3
typedef struct _physadr {
        int r[1];
} *physadr;

typedef struct label_t {
        int val[6];
} label_t;


typedef unsigned int vm_offset_t;
typedef __int64_t vm_ooffset_t;
typedef unsigned int vm_pindex_t;
typedef unsigned int vm_size_t;

typedef __int32_t register_t;
# 64 "/usr/include/machine/types.h" 3
typedef __uint32_t intrmask_t;


typedef void inthand2_t (void *_cookie);
typedef void ointhand2_t (int _device_id);
# 59 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 2 3


typedef unsigned char u_char;
typedef unsigned short u_short;
typedef unsigned int u_int;
typedef unsigned long u_long;
typedef unsigned short ushort;
typedef unsigned int uint;


typedef __uint8_t u_int8_t;
typedef __uint16_t u_int16_t;
typedef __uint32_t u_int32_t;
typedef __uint64_t u_int64_t;

typedef u_int64_t u_quad_t;
typedef int64_t quad_t;
typedef quad_t * qaddr_t;

typedef char * caddr_t;
typedef const char * c_caddr_t;
typedef volatile char *v_caddr_t;
typedef int32_t daddr_t;
typedef u_int32_t u_daddr_t;
typedef u_int32_t fixpt_t;
typedef u_int32_t gid_t;
typedef u_int32_t ino_t;
typedef long key_t;
typedef u_int16_t mode_t;
typedef u_int16_t nlink_t;
typedef __int64_t off_t;
typedef int pid_t;
typedef quad_t rlim_t;



typedef int32_t segsz_t;

typedef int32_t swblk_t;
typedef int32_t ufs_daddr_t;
typedef u_int32_t uid_t;
# 116 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 3
typedef u_int32_t dev_t;
# 134 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 3
# 1 "/usr/include/machine/endian.h" 1 3
# 59 "/usr/include/machine/endian.h" 3
# 1 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/cdefs.h" 1 3
# 60 "/usr/include/machine/endian.h" 2 3


extern "C" {
unsigned long htonl (unsigned long);
unsigned short htons (unsigned short);
unsigned long ntohl (unsigned long);
unsigned short ntohs (unsigned short);
}
# 135 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 2 3


typedef unsigned long clock_t;




typedef int clockid_t;






typedef unsigned int size_t;






typedef int ssize_t;




typedef long time_t;




typedef int timer_t;
# 183 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 3
typedef unsigned long fd_mask;






typedef struct fd_set {
        fd_mask fds_bits[(((1024) + (((sizeof(fd_mask) * 8)) - 1)) / ((sizeof(fd_mask) * 8)))];
} fd_set;
# 207 "/usr/local/lib/gcc-lib/i386-unknown-freebsd4.2/3.0.1/include/sys/types.h" 3
extern "C" {


int ftruncate (int, off_t);



off_t lseek (int, off_t, int);



void * mmap (void *, size_t, int, int, int, off_t);



int truncate (const char *, off_t);

}
# 57 "../../../common/includes/ika_com_types.h" 2
# 71 "../../../common/includes/ika_com_types.h"
        typedef unsigned char BOOL;

        typedef unsigned char UCHAR;
        typedef unsigned int UINT;
        typedef unsigned short USHORT;
        typedef unsigned long ULONG;
# 95 "../../../common/includes/ika_com_types.h"
typedef struct _FABRIC_ADDR_T
{
        u_int8_t hops;
        u_int8_t xhops;
        u_int8_t row;
        u_int8_t port;
        u_int8_t device;
        u_int8_t reserved;

} fab_dev_addr, *Pfab_dev_addr;


typedef struct _MPEG2_HEADER
{

        u_int32_t sync_byte:8;
        u_int32_t transport_error_indicator:1;
        u_int32_t payload_start_indicator:1;
        u_int32_t transport_priority:1;
        u_int32_t pid:13;
        u_int32_t scrambling_control:2;
        u_int32_t adaptation_field:2;
        u_int32_t continuity_counter:4;

} mpeg2_header, *Pmpeg2_header;


typedef void* Handle_t;


typedef int (*init_func_t)( void );


typedef void (*tsk_func_t)( void );


typedef void (*test_func_t)( u_int32_t );


typedef union _fbrc_addr
{
        u_int16_t fa_w;
        u_int8_t fa_b[2];

} fbrc_addr_t;


typedef struct
{
        u_int8_t dest;
        u_int8_t type;
        u_int16_t cell_length;
        fbrc_addr_t src_addr;
        u_int16_t seq_num;

} vmsg_header_t;
# 7 "../../../common/includes/nfss.h" 2
# 1 "../../../common/includes/ika_com_defs.h" 1
# 17 "../../../common/includes/ika_com_defs.h"
# 1 "../../../common/includes/ika_com_types.h" 1
# 18 "../../../common/includes/ika_com_defs.h" 2
# 37 "../../../common/includes/ika_com_defs.h"
# 8 "../../../common/includes/nfss.h" 2
# 18 "../../../common/includes/nfss.h"
typedef char* filename3;
typedef char* nfspath3;
typedef u_int64_t fileid3;
typedef u_int64_t cookie3;
typedef char cookieverf3[8];
typedef char createverf3[8];
typedef char writeverf3[8];
typedef u_int32_t uid3;
typedef u_int32_t gid3;
typedef u_int64_t size3;
typedef u_int64_t offset3;
typedef u_int32_t mode3;
typedef u_int32_t count3;


typedef enum
{
    NFS3RPC_NULL=0,
    NFS3RPC_GETATTR=1,
    NFS3RPC_SETATTR=2,
    NFS3RPC_LOOKUP=3,
    NFS3RPC_ACCESS=4,
    NFS3RPC_READLINK=5,
    NFS3RPC_READ=6,
    NFS3RPC_WRITE=7,
    NFS3RPC_CREATE=8,
    NFS3RPC_MKDIR=9,
    NFS3RPC_SYMLINK=10,
    NFS3RPC_MKNOD=11,
    NFS3RPC_REMOVE=12,
    NFS3RPC_RMDIR=13,
    NFS3RPC_RENAME=14,
    NFS3RPC_LINK=15,
    NFS3RPC_READDIR=16,
    NFS3RPC_READDIRPLUS=17,
    NFS3RPC_FSSTAT=18,
    NFS3RPC_FSINFO=19,
    NFS3RPC_PATHCONF=20,
    NFS3RPC_COMMIT=21
}NFS3RPC_enum;
typedef u_int32_t NFS3RPC;

typedef enum
{
    NF3NON = 0,
    NF3REG = 1,
    NF3DIR = 2,
    NF3BLK = 3,
    NF3CHR = 4,
    NF3LNK = 5,
    NF3SOCK= 6,
    NF3FIFO= 7
}ftype3_enum;
typedef u_int32_t ftype3;

typedef struct
{
    int32_t tv_sec __attribute__ ((packed));
    int32_t tv_usec __attribute__ ((packed));
}nfstime3 __attribute__ ((packed));


typedef struct
{
    u_int32_t st_dev __attribute__ ((packed));
    u_int32_t st_ino __attribute__ ((packed));
    u_int16_t st_mode __attribute__ ((packed));
    u_int16_t st_nlink __attribute__ ((packed));
    u_int32_t st_uid __attribute__ ((packed));
    u_int32_t st_gid __attribute__ ((packed));
    u_int32_t st_rdev __attribute__ ((packed));
    nfstime3 st_atimespec __attribute__ ((packed));
    nfstime3 st_mtimespec __attribute__ ((packed));
    nfstime3 st_ctimespec __attribute__ ((packed));
    int64_t st_size __attribute__ ((packed));
    int64_t st_blocks __attribute__ ((packed));
    u_int32_t st_blksize __attribute__ ((packed));
    u_int32_t st_flags __attribute__ ((packed));
    u_int32_t st_gen __attribute__ ((packed));
    int32_t st_lspare __attribute__ ((packed));
    int64_t st_qspare[2] __attribute__ ((packed));
}fattr3;

# 7 "../../../common/includes/nfsc_utils.h" 2
# 19 "test.c" 2

fattr3 *NH_FATTR3(fattr3 *s)
{

        s->st_dev = __extension__ ({ register u_long __X = (s->st_dev); __asm ("xchgb %h1, %b1\n\trorl $16, %1\n\txchgb %h1, %b1" : "=q" (__X) : "0" (__X)); __X; });
        s->st_ino = __extension__ ({ register u_long __X = (s->st_ino); __asm ("xchgb %h1, %b1\n\trorl $16, %1\n\txchgb %h1, %b1" : "=q" (__X) : "0" (__X)); __X; });
        s->st_mode = __extension__ ({ register u_short __X = (s->st_mode); __asm ("xchgb %h1, %b1" : "=q" (__X) : "0" (__X)); __X; });
        s->st_nlink = __extension__ ({ register u_short __X = (s->st_nlink); __asm ("xchgb %h1, %b1" : "=q" (__X) : "0" (__X)); __X; });
        s->st_uid = __extension__ ({ register u_long __X = (s->st_uid); __asm ("xchgb %h1, %b1\n\trorl $16, %1\n\txchgb %h1, %b1" : "=q" (__X) : "0" (__X)); __X; });
        return s;
}