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update build block code

This commit is contained in:
fanfuqiang 2018-10-15 13:28:01 +08:00
parent ffa203f43f
commit 60cb5de6cf
1 changed files with 37 additions and 14 deletions
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51
src/rap_plugin/rap-fe-cfi.c
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@ -441,6 +441,12 @@ void hl_fe_cfi_catch_tree ()
return catch;
}
/* Build the blocks and complete the control flow info. */
static void
cfi_make_blocks_and_edgs ()
{
}
/* Insert branch and create two blcok contain original function call and our
catch code. And also need complete the control flow graph.
@ -471,6 +477,7 @@ insert_cond_and_build_ssa_cfg (gimple_stmt_iterator *gp,
{
gimple cs, g;
gimple_stmt_iterator first, gsi;
gimple assign; // test gimple we insert.
gimple test; // test gimple we insert.
gimple catch; // catch function we insert.
gimple branch; // goto gimple we insert.
@ -493,9 +500,9 @@ insert_cond_and_build_ssa_cfg (gimple_stmt_iterator *gp,
/* lhs = t_ */
lhs = create_tmp_var (t_t, "hl_cfi_hash");
//target = make_ssa_name (var, NULL);
g = gimple_build_assign (lhs, t_);
gimple_set_block (g, gimple_block (cs));
gsi_insert_before (&gsi, g, GSI_SAME_STMT);
assign = gimple_build_assign (lhs, t_);
gimple_set_block (assign, gimple_block (cs));
gsi_insert_before (&gsi, assign, GSI_SAME_STMT);
// if (lhs != s_) goto cfi_catch else goto call
test = gimple_build_cond (NE_EXPR, lhs, s_, NULL, NULL);
gimple_set_block (test, gimple_block (cs));
@ -525,20 +532,36 @@ insert_cond_and_build_ssa_cfg (gimple_stmt_iterator *gp,
GIMPLE_CHECK (call, GIMPLE_LABEL);
gcc_assert (cfg_hooks && ! strcmp (cfg_hooks->name, "gimple"));
/* Make the blocks. */
/* We can sure we have this code fragment(write as gimple pointers):
# old code
assign
branch
catch
call
# old code */
/* Make the blocks & edges. */
stmt_starts_bb_p ();
stmt_ends_bb_p ();
{
basic_block bb = ENTRY_BLOCK_PTR;
//
g = gsi_for_stmt (branch);
gsi_split_seq_before (&g, &branch);
bb = create_basic_block (branch, NULL, bb);
gimple_set_bb (assign, bb);
gimple_set_bb (branch, bb);
/* Split the gimple sequence. */
g = gsi_for_stmt (branch);
gsi_split_seq_before (g, branch);
g = gsi_for_stmt (catch);
gsi_split_seq_before (g, catch);
g = gsi_for_stmt (call);
gsi_split_seq_before (g, call);
/* Build the edges. */
//
g = gsi_for_stmt (catch);
gsi_split_seq_before (&g, &catch);
bb = create_basic_block (catch, NULL, bb);
gimple_set_bb (catch, bb);
//
g = gsi_for_stmt (call);
gsi_split_seq_before (&g, &call);
bb = create_basic_block (call, NULL, bb);
gimple_set_bb (call, bb);
}
return;
}