1 /* Jump threading was creating FALLTHRU edges out of blocks ending in
2 GOTO_EXPR. */
3
4 extern int frame_pointer_needed;
5
6 struct value_data_entry
7 {
8 unsigned int mode;
9 unsigned int oldest_regno;
10 unsigned int next_regno;
11 };
12
13 struct value_data
14 {
15 struct value_data_entry e[53];
16 unsigned int max_value_regs;
17 };
18
19 struct rtx_def
20 {
21 unsigned int code: 16;
22 unsigned int mode : 8;
23 unsigned int jump : 1;
24 unsigned int call : 1;
25 unsigned int unchanging : 1;
26 unsigned int volatil : 1;
27 unsigned int in_struct : 1;
28 unsigned int used : 1;
29 unsigned integrated : 1;
30 unsigned frame_related : 1;
31 int fld[1];
32 };
33
34 typedef struct rtx_def *rtx;
35
36 enum machine_mode { VOIDmode, BImode, QImode, HImode, SImode, DImode,
37 TImode, OImode, PQImode, PHImode, PSImode, PDImode, QFmode, HFmode,
38 TQFmode, SFmode, DFmode, XFmode, TFmode, QCmode, HCmode, SCmode,
39 DCmode, XCmode, TCmode, CQImode, CHImode, CSImode, CDImode, CTImode,
40 COImode, V1DImode, V2QImode, V2HImode, V2SImode, V2DImode, V4QImode,
41 V4HImode, V4SImode, V4DImode, V8QImode, V8HImode, V8SImode, V8DImode,
42 V16QImode, V2HFmode, V2SFmode, V2DFmode, V4HFmode, V4SFmode, V4DFmode,
43 V8HFmode, V8SFmode, V8DFmode, V16SFmode, BLKmode, CCmode, CCGCmode,
44 CCGOCmode, CCNOmode, CCZmode, CCFPmode, CCFPUmode, MAX_MACHINE_MODE };
45
46 enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
47 MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT,
48 MODE_VECTOR_INT, MODE_VECTOR_FLOAT,
49 MAX_MODE_CLASS};
50
51 extern const unsigned char mode_size[(int) MAX_MACHINE_MODE];
52 extern const enum mode_class mode_class[(int) MAX_MACHINE_MODE];
53
54 extern int target_flags;
55
56 static void
57 copy_value (rtx dest, rtx src, struct value_data *vd)
58 {
59 unsigned int dr = (((dest)->fld[0]));
60 unsigned int sr = (((src)->fld[0]));
61 unsigned int dn, sn;
62 unsigned int i;
63
64
65
66 if (sr == dr)
67 return;
68
69
70
71 if (dr == 7)
72 return;
73
74
75 if (frame_pointer_needed && dr == 6)
76 return;
77
78
79 dn = (((dr) >= 8 && (dr) <= (8 + 7)) || (((dr) >= (20 + 1) && (dr) <= ((20 + 1) + 7)) || ((dr) >= (((((((20 + 1) + 7) + 1) + 7) + 1) + 7) + 1) && (dr) <= ((((((((20 + 1) + 7) + 1) + 7) + 1) + 7) + 1) + 7))) || ((dr) >= (((20 + 1) + 7) + 1) && (dr) <= ((((20 + 1) + 7) + 1) + 7)) ? (((mode_class[(int) (((enum machine_mode) (dest)->mode))]) == MODE_COMPLEX_INT || (mode_class[(int) (((enum machine_mode) (dest)->mode))]) == MODE_COMPLEX_FLOAT) ? 2 : 1) : ((((enum machine_mode) (dest)->mode)) == TFmode ? ((target_flags & 0x00100000) ? 2 : 3) : (((enum machine_mode) (dest)->mode)) == TCmode ? ((target_flags & 0x00100000) ? 4 : 6) : (((mode_size[(int) (((enum machine_mode) (dest)->mode))]) + ((target_flags & 0x00100000) ? 8 : 4) - 1) / ((target_flags & 0x00100000) ? 8 : 4))));
80 sn = (((sr) >= 8 && (sr) <= (8 + 7)) || (((sr) >= (20 + 1) && (sr) <= ((20 + 1) + 7)) || ((sr) >= (((((((20 + 1) + 7) + 1) + 7) + 1) + 7) + 1) && (sr) <= ((((((((20 + 1) + 7) + 1) + 7) + 1) + 7) + 1) + 7))) || ((sr) >= (((20 + 1) + 7) + 1) && (sr) <= ((((20 + 1) + 7) + 1) + 7)) ? (((mode_class[(int) (((enum machine_mode) (dest)->mode))]) == MODE_COMPLEX_INT || (mode_class[(int) (((enum machine_mode) (dest)->mode))]) == MODE_COMPLEX_FLOAT) ? 2 : 1) : ((((enum machine_mode) (dest)->mode)) == TFmode ? ((target_flags & 0x00100000) ? 2 : 3) : (((enum machine_mode) (dest)->mode)) == TCmode ? ((target_flags & 0x00100000) ? 4 : 6) : (((mode_size[(int) (((enum machine_mode) (dest)->mode))]) + ((target_flags & 0x00100000) ? 8 : 4) - 1) / ((target_flags & 0x00100000) ? 8 : 4))));
81 if ((dr > sr && dr < sr + sn)
82 || (sr > dr && sr < dr + dn))
83 return;
84
85
86
87
88 if (vd->e[sr].mode == VOIDmode)
89 set_value_regno (sr, vd->e[dr].mode, vd);
90 else if (sn < (unsigned int) (((sr) >= 8 && (sr) <= (8 + 7)) || (((sr) >= (20 + 1) && (sr) <= ((20 + 1) + 7)) || ((sr) >= (((((((20 + 1) + 7) + 1) + 7) + 1) + 7) + 1) && (sr) <= ((((((((20 + 1) + 7) + 1) + 7) + 1) + 7) + 1) + 7))) || ((sr) >= (((20 + 1) + 7) + 1) && (sr) <= ((((20 + 1) + 7) + 1) + 7)) ? (((mode_class[(int) (vd->e[sr].mode)]) == MODE_COMPLEX_INT || (mode_class[(int) (vd->e[sr].mode)]) == MODE_COMPLEX_FLOAT) ? 2 : 1) : ((vd->e[sr].mode) == TFmode ? ((target_flags & 0x00100000) ? 2 : 3) : (vd->e[sr].mode) == TCmode ? ((target_flags & 0x00100000) ? 4 : 6) : (((mode_size[(int) (vd->e[sr].mode)]) + ((target_flags & 0x00100000) ? 8 : 4) - 1) / ((target_flags & 0x00100000) ? 8 : 4))))
91 && ((mode_size[(int) (vd->e[sr].mode)]) > ((target_flags & 0x00100000) ? 8 : 4)
92 ? 0 : 0))
93 return;
94
95
96
97
98 else if (sn > (unsigned int) (((sr) >= 8 && (sr) <= (8 + 7)) || (((sr) >= (20 + 1) && (sr) <= ((20 + 1) + 7)) || ((sr) >= (((((((20 + 1) + 7) + 1) + 7) + 1) + 7) + 1) && (sr) <= ((((((((20 + 1) + 7) + 1) + 7) + 1) + 7) + 1) + 7))) || ((sr) >= (((20 + 1) + 7) + 1) && (sr) <= ((((20 + 1) + 7) + 1) + 7)) ? (((mode_class[(int) (vd->e[sr].mode)]) == MODE_COMPLEX_INT || (mode_class[(int) (vd->e[sr].mode)]) == MODE_COMPLEX_FLOAT) ? 2 : 1) : ((vd->e[sr].mode) == TFmode ? ((target_flags & 0x00100000) ? 2 : 3) : (vd->e[sr].mode) == TCmode ? ((target_flags & 0x00100000) ? 4 : 6) : (((mode_size[(int) (vd->e[sr].mode)]) + ((target_flags & 0x00100000) ? 8 : 4) - 1) / ((target_flags & 0x00100000) ? 8 : 4)))))
99 return;
100
101
102
103 vd->e[dr].oldest_regno = vd->e[sr].oldest_regno;
104
105 for (i = sr; vd->e[i].next_regno != (~(unsigned int) 0); i = vd->e[i].next_regno)
106 continue;
107 vd->e[i].next_regno = dr;
108
109
110 validate_value_data (vd);
111
112 }