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| author | YunQiang Su <yunqiang.su@cipunited.com> | 2021-08-31 07:19:49 -0400 |
|---|---|---|
| committer | YunQiang Su <syq@debian.org> | 2021-09-01 18:12:17 +0800 |
| commit | 7c922606b75370d5b4c3589dcf0fc757dfb4fcaa (patch) | |
| tree | 0fd0ae30e7a6fc7bcc8477378de60249f6a92569 /gcc | |
| parent | 45ff12512e568089a4c7b85b5322ab8019723cd9 (diff) | |
| download | gcc-7c922606b75370d5b4c3589dcf0fc757dfb4fcaa.zip gcc-7c922606b75370d5b4c3589dcf0fc757dfb4fcaa.tar.gz gcc-7c922606b75370d5b4c3589dcf0fc757dfb4fcaa.tar.bz2 | |
md/define_c_enum: support value assignation
Currently, the enums from define_c_enum and define_enum can only
has values one by one from 0.
In fact we can support the behaviour just like C, aka like
(define_enum "mips_isa" [(mips1 1) mips2 (mips32 32) mips32r2]),
then we can get
enum mips_isa {
MIPS_ISA_MIPS1 = 1,
MIPS_ISA_MIPS2 = 2,
MIPS_ISA_MIPS32 = 32,
MIPS_ISA_MIPS32R2 = 33
};
gcc/ChangeLog:
* read-md.c (md_reader::handle_enum): support value assignation.
* doc/md.texi: record define_c_enum value assignation support.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/doc/md.texi | 4 | ||||
| -rw-r--r-- | gcc/read-md.c | 21 |
2 files changed, 21 insertions, 4 deletions
diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index f8047ae..2b41cb7 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -11074,6 +11074,8 @@ The syntax is as follows: (define_c_enum "@var{name}" [ @var{value0} @var{value1} + (@var{value32} 32) + @var{value33} @dots{} @var{valuen} ]) @@ -11086,6 +11088,8 @@ in @file{insn-constants.h}: enum @var{name} @{ @var{value0} = 0, @var{value1} = 1, + @var{value32} = 32, + @var{value33} = 33, @dots{} @var{valuen} = @var{n} @}; diff --git a/gcc/read-md.c b/gcc/read-md.c index bb419e0..8fda401 100644 --- a/gcc/read-md.c +++ b/gcc/read-md.c @@ -902,7 +902,8 @@ void md_reader::handle_enum (file_location loc, bool md_p) { char *enum_name, *value_name; - struct md_name name; + unsigned int cur_value; + struct md_name name, value; struct enum_type *def; struct enum_value *ev; void **slot; @@ -928,6 +929,7 @@ md_reader::handle_enum (file_location loc, bool md_p) *slot = def; } + cur_value = def->num_values; require_char_ws ('['); while ((c = read_skip_spaces ()) != ']') @@ -937,8 +939,18 @@ md_reader::handle_enum (file_location loc, bool md_p) error_at (loc, "unterminated construct"); exit (1); } - unread_char (c); - read_name (&name); + if (c == '(') + { + read_name (&name); + read_name (&value); + require_char_ws (')'); + cur_value = atoi (value.string); + } + else + { + unread_char (c); + read_name (&name); + } ev = XNEW (struct enum_value); ev->next = 0; @@ -954,11 +966,12 @@ md_reader::handle_enum (file_location loc, bool md_p) ev->name = value_name; } ev->def = add_constant (get_md_constants (), value_name, - md_decimal_string (def->num_values), def); + md_decimal_string (cur_value), def); *def->tail_ptr = ev; def->tail_ptr = &ev->next; def->num_values++; + cur_value++; } } |