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(loop_optimize): Delete uses of loop_number_first_block, 

loop_number_last_block, loop_number_block_level.  Correct call of
find_loop_tree_blocks.  Add call to unroll_block_trees.

From-SVN: r1799
This commit is contained in:
Jim Wilson 1992-08-11 12:52:01 -07:00
parent ba534a45c7
commit 07e857c23f
1 changed files with 7 additions and 12 deletions
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19
gcc/loop.c
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@ -377,17 +377,6 @@ loop_optimize (f, dumpfile)
loop_invalid = (char *) alloca (max_loop_num * sizeof (char));
loop_number_exit_labels = (rtx *) alloca (max_loop_num * sizeof (rtx));
if (flag_unroll_loops && write_symbols != NO_DEBUG)
{
loop_number_first_block
= (union tree_node **) alloca (max_loop_num
* sizeof (union tree_node *));
loop_number_last_block
= (union tree_node **) alloca (max_loop_num
* sizeof (union tree_node *));
loop_number_block_level = (int *) alloca (max_loop_num * sizeof (int));
}
/* Find and process each loop.
First, find them, and record them in order of their beginnings. */
find_and_verify_loops (f);
@ -433,7 +422,7 @@ loop_optimize (f, dumpfile)
/* Create a mapping from loops to BLOCK tree nodes. */
if (flag_unroll_loops && write_symbols != NO_DEBUG)
find_loop_tree_blocks (f);
find_loop_tree_blocks ();
/* Now scan the loops, last ones first, since this means inner ones are done
before outer ones. */
@ -441,6 +430,12 @@ loop_optimize (f, dumpfile)
if (! loop_invalid[i] && loop_number_loop_ends[i])
scan_loop (loop_number_loop_starts[i], loop_number_loop_ends[i],
max_reg_num ());
/* If debugging and unrolling loops, we must replicate the tree nodes
corresponding to the blocks inside the loop, so that the original one
to one mapping will remain. */
if (flag_unroll_loops && write_symbols != NO_DEBUG)
unroll_block_trees ();
}
/* Optimize one loop whose start is LOOP_START and end is END.