dmd.backend.blockopt

Manipulating basic blocks and their edges.

Members

Functions

block_appendexp void block_appendexp(block* b, elem* e): Append elem to the elems comprising the current block. Read in an expression and put it in curblock.Belem. If there is one already there, create a tree like: , / \ old e
block_clearvisit void block_clearvisit(): Clear visit.
block_compbcount void block_compbcount(): Compute number of parents (Bcount) of each basic block.
block_endfunc void block_endfunc(int flag): Mark end of function. flag: 0 do a "return" 1 do a "return 0"
block_free void block_free(block* b): Free a block.
block_goto block* block_goto(Blockx* bx, int bc, block* bn): Finish up this block and start the next one.
block_goto void block_goto(): Goto a block named gotolbl. Start a new block that is labelled by newlbl.
block_goto void block_goto(block* bn): Goto a block named gotolbl. Start a new block that is labelled by newlbl.
block_goto void block_goto(block* bgoto, block* bnew): Goto a block named gotolbl. Start a new block that is labelled by newlbl.
block_initvar void block_initvar(Symbol* s): Mark curblock as initializing Symbol s.
block_next void block_next(Blockx* bctx, int bc, block* bn): Finish up this block and start the next one.
block_optimizer_free void block_optimizer_free(block* b): Free optimizer gathered data.
block_pred void block_pred(): Build predecessor list (Bpred) for each block.
block_ptr void block_ptr(): Replace block numbers with block pointers.
block_term void block_term()
block_visit void block_visit(block* b): Visit block and each of its predecessors.
blocklist_free
void blocklist_free(block** pb): Free list of blocks.
blockopt void blockopt(int iter): Perform branch optimization on basic blocks.
brcombine void brcombine(): Try to remove control structure. That is, try to resolve if-else, goto and return statements into &&, || and ?: combinations.
compdfo void compdfo(): Compute depth first order (DFO). Equivalent to Aho & Ullman Fig. 13.8. Blocks not in dfo[] are unreachable.
funcsideeffects void funcsideeffects(): Determine if function has any side effects. This means, determine if all the function does is return a value; no extraneous definitions or effects or exceptions. A function with no side effects can be CSE'd. It does not reference statics or indirect references.

Static variables

bc_goal goal_t[BCMAX] bc_goal;

dmd.backend.blockopt

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Static variables

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