Default precision qualifier for a data type could be set several times
inside a shader. This patch allows to update the default precision
qualifier for the given type that is saved in the symbol table.
If it is not in the symbol table, just add it.
Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97804
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Namespace support seems to have been unused for a very long time.
Previously the hash table entry was never removed and the symbol name
wasn't freed until the symbol table was destroyed.
In theory this could reduced the number of times we need to copy a string
as duplicate names are reused. However in practice there is likely only a
limited number of symbols that are the same and this is likely to cause
other less than optimal behaviour such as the hash_table continuously
growing.
Along with dropping namespace support this change removes entries from
the hash table as they become unused.
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Currently, when cross validating global variables, all global variables
seen in the shaders that are part of a program are saved in a table.
When checking a variable this already exist in the table, we check both
are initialized to the same value. If the already saved variable does
not have an initializer, we copy it from the new variable.
Unfortunately this is wrong, as we are modifying something it is
constant. Also, if this modified variable is used in
another program, it will keep the initializer, when it should have none.
Instead of copying the initializer, this commit replaces the old
variable with the new one. So if we see again the same variable with an
initializer, we can compare if both are the same or not.
v2: convert tabs in whitespaces (Kenenth Graunke)
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
