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pan/bi: Add builder data structure

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In preparation for builder routines.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8215>
This commit is contained in:
Alyssa Rosenzweig 2020-11-27 18:56:11 -05:00
parent e8c687b15b
commit eb7e20b378
1 changed files with 34 additions and 0 deletions
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34
src/panfrost/bifrost/compiler.h
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@ -1149,4 +1149,38 @@ bi_after_instr(bi_instr *instr)
};
}
/* IR builder in terms of cursor infrastructure */
typedef struct {
bi_context *shader;
bi_cursor cursor;
} bi_builder;
/* Insert an instruction at the cursor and move the cursor */
static inline void
bi_builder_insert(bi_cursor *cursor, bi_instr *I)
{
switch (cursor->option) {
case bi_cursor_after_instr:
list_add(&I->link, &cursor->instr->link);
cursor->instr = I;
return;
case bi_cursor_after_block:
list_addtail(&I->link, &cursor->block->base.instructions);
cursor->option = bi_cursor_after_instr;
cursor->instr = I;
return;
case bi_cursor_before_instr:
list_addtail(&I->link, &cursor->instr->link);
cursor->option = bi_cursor_after_instr;
cursor->instr = I;
return;
}
unreachable("Invalid cursor option");
}
#endif