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comparison gcc/common/config/aarch64/aarch64-common.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children 1830386684a0
comparison
equal deleted inserted replaced
111:04ced10e8804 131:84e7813d76e9
1 /* Common hooks for AArch64. 1 /* Common hooks for AArch64.
2 Copyright (C) 2012-2017 Free Software Foundation, Inc. 2 Copyright (C) 2012-2018 Free Software Foundation, Inc.
3 Contributed by ARM Ltd. 3 Contributed by ARM Ltd.
4 4
5 This file is part of GCC. 5 This file is part of GCC.
6 6
7 GCC is free software; you can redistribute it and/or modify it 7 GCC is free software; you can redistribute it and/or modify it
28 #include "common/common-target.h" 28 #include "common/common-target.h"
29 #include "common/common-target-def.h" 29 #include "common/common-target-def.h"
30 #include "opts.h" 30 #include "opts.h"
31 #include "flags.h" 31 #include "flags.h"
32 #include "diagnostic.h" 32 #include "diagnostic.h"
33 #include "params.h"
33 34
34 #ifdef TARGET_BIG_ENDIAN_DEFAULT 35 #ifdef TARGET_BIG_ENDIAN_DEFAULT
35 #undef TARGET_DEFAULT_TARGET_FLAGS 36 #undef TARGET_DEFAULT_TARGET_FLAGS
36 #define TARGET_DEFAULT_TARGET_FLAGS (MASK_BIG_END) 37 #define TARGET_DEFAULT_TARGET_FLAGS (MASK_BIG_END)
37 #endif 38 #endif
39 #undef TARGET_HANDLE_OPTION 40 #undef TARGET_HANDLE_OPTION
40 #define TARGET_HANDLE_OPTION aarch64_handle_option 41 #define TARGET_HANDLE_OPTION aarch64_handle_option
41 42
42 #undef TARGET_OPTION_OPTIMIZATION_TABLE 43 #undef TARGET_OPTION_OPTIMIZATION_TABLE
43 #define TARGET_OPTION_OPTIMIZATION_TABLE aarch_option_optimization_table 44 #define TARGET_OPTION_OPTIMIZATION_TABLE aarch_option_optimization_table
45 #undef TARGET_OPTION_DEFAULT_PARAMS
46 #define TARGET_OPTION_DEFAULT_PARAMS aarch64_option_default_params
47 #undef TARGET_OPTION_VALIDATE_PARAM
48 #define TARGET_OPTION_VALIDATE_PARAM aarch64_option_validate_param
44 49
45 /* Set default optimization options. */ 50 /* Set default optimization options. */
46 static const struct default_options aarch_option_optimization_table[] = 51 static const struct default_options aarch_option_optimization_table[] =
47 { 52 {
48 /* Enable section anchors by default at -O1 or higher. */ 53 /* Enable section anchors by default at -O1 or higher. */
49 { OPT_LEVELS_1_PLUS, OPT_fsection_anchors, NULL, 1 }, 54 { OPT_LEVELS_1_PLUS, OPT_fsection_anchors, NULL, 1 },
55 /* Disable fomit-frame-pointer by default. */
56 { OPT_LEVELS_ALL, OPT_fomit_frame_pointer, NULL, 0 },
50 /* Enable -fsched-pressure by default when optimizing. */ 57 /* Enable -fsched-pressure by default when optimizing. */
51 { OPT_LEVELS_1_PLUS, OPT_fsched_pressure, NULL, 1 }, 58 { OPT_LEVELS_1_PLUS, OPT_fsched_pressure, NULL, 1 },
52 /* Enable redundant extension instructions removal at -O2 and higher. */ 59 /* Enable redundant extension instructions removal at -O2 and higher. */
53 { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 }, 60 { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 },
61 #if (TARGET_DEFAULT_ASYNC_UNWIND_TABLES == 1)
62 { OPT_LEVELS_ALL, OPT_fasynchronous_unwind_tables, NULL, 1 },
63 { OPT_LEVELS_ALL, OPT_funwind_tables, NULL, 1},
64 #endif
54 { OPT_LEVELS_NONE, 0, NULL, 0 } 65 { OPT_LEVELS_NONE, 0, NULL, 0 }
55 }; 66 };
67
68 /* Implement target validation TARGET_OPTION_DEFAULT_PARAM. */
69
70 static bool
71 aarch64_option_validate_param (const int value, const int param)
72 {
73 /* Check that both parameters are the same. */
74 if (param == (int) PARAM_STACK_CLASH_PROTECTION_GUARD_SIZE)
75 {
76 if (value != 12 && value != 16)
77 {
78 error ("only values 12 (4 KB) and 16 (64 KB) are supported for guard "
79 "size. Given value %d (%llu KB) is out of range",
80 value, (1ULL << value) / 1024ULL);
81 return false;
82 }
83 }
84
85 return true;
86 }
87
88 /* Implement TARGET_OPTION_DEFAULT_PARAMS. */
89
90 static void
91 aarch64_option_default_params (void)
92 {
93 /* We assume the guard page is 64k. */
94 int index = (int) PARAM_STACK_CLASH_PROTECTION_GUARD_SIZE;
95 set_default_param_value (PARAM_STACK_CLASH_PROTECTION_GUARD_SIZE,
96 DEFAULT_STK_CLASH_GUARD_SIZE == 0
97 ? 16 : DEFAULT_STK_CLASH_GUARD_SIZE);
98
99 int guard_size
100 = default_param_value (PARAM_STACK_CLASH_PROTECTION_GUARD_SIZE);
101
102 /* Set the interval parameter to be the same as the guard size. This way the
103 mid-end code does the right thing for us. */
104 set_default_param_value (PARAM_STACK_CLASH_PROTECTION_PROBE_INTERVAL,
105 guard_size);
106
107 /* Validate the options. */
108 aarch64_option_validate_param (guard_size, index);
109 }
56 110
57 /* Implement TARGET_HANDLE_OPTION. 111 /* Implement TARGET_HANDLE_OPTION.
58 This function handles the target specific options for CPU/target selection. 112 This function handles the target specific options for CPU/target selection.
59 113
60 -mcpu=CPU is shorthand for -march=ARCH_FOR_CPU, -mtune=CPU. 114 -mcpu=CPU is shorthand for -march=ARCH_FOR_CPU, -mtune=CPU.
93 case OPT_mfix_cortex_a53_835769: 147 case OPT_mfix_cortex_a53_835769:
94 opts->x_aarch64_fix_a53_err835769 = val; 148 opts->x_aarch64_fix_a53_err835769 = val;
95 return true; 149 return true;
96 150
97 case OPT_mstrict_align: 151 case OPT_mstrict_align:
98 opts->x_target_flags |= MASK_STRICT_ALIGN; 152 if (val)
153 opts->x_target_flags |= MASK_STRICT_ALIGN;
154 else
155 opts->x_target_flags &= ~MASK_STRICT_ALIGN;
99 return true; 156 return true;
100 157
101 case OPT_momit_leaf_frame_pointer: 158 case OPT_momit_leaf_frame_pointer:
102 opts->x_flag_omit_leaf_frame_pointer = val; 159 opts->x_flag_omit_leaf_frame_pointer = val;
103 return true; 160 return true;