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update build cfg egde code

This commit is contained in:
fanfuqiang 2018-10-17 18:27:26 +08:00
parent cf8ba4ae9e
commit d805638feb
1 changed files with 23 additions and 19 deletions
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42
src/rap_plugin/rap-fe-cfi.c
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@ -476,8 +476,8 @@ insert_cond_and_build_ssa_cfg (gimple_stmt_iterator *gp,
{ {
gimple cs, g; gimple cs, g;
gimple_stmt_iterator first, gsi; gimple_stmt_iterator first, gsi;
gimple assign; // test gimple we insert. gimple assign; // assign gimple we insert.
gimple test; // test gimple we insert. gimple cond; // test gimple we insert.
gimple catch; // catch function we insert. gimple catch; // catch function we insert.
gimple branch; // goto gimple we insert. gimple branch; // goto gimple we insert.
gimple call; // call label gimple we insert. gimple call; // call label gimple we insert.
@ -503,9 +503,9 @@ insert_cond_and_build_ssa_cfg (gimple_stmt_iterator *gp,
gimple_set_block (assign, gimple_block (cs)); gimple_set_block (assign, gimple_block (cs));
gsi_insert_before (&gsi, assign, GSI_SAME_STMT); gsi_insert_before (&gsi, assign, GSI_SAME_STMT);
// if (lhs != s_) goto cfi_catch else goto call // if (lhs != s_) goto cfi_catch else goto call
test = gimple_build_cond (NE_EXPR, lhs, s_, NULL, NULL); cond = gimple_build_cond (NE_EXPR, lhs, s_, NULL, NULL);
gimple_set_block (test, gimple_block (cs)); gimple_set_block (cond, gimple_block (cs));
gsi_insert_before (&gsi, test, GSI_SAME_STMT); gsi_insert_before (&gsi, cond, GSI_SAME_STMT);
// goto call_label // goto call_label
//branch = gimple_build_goto (call); //branch = gimple_build_goto (call);
//gimple_set_block (branch, gimple_block (cs)); //gimple_set_block (branch, gimple_block (cs));
@ -535,7 +535,7 @@ insert_cond_and_build_ssa_cfg (gimple_stmt_iterator *gp,
/* We can sure we have this code fragment(write as gimple pointers): /* We can sure we have this code fragment(write as gimple pointers):
# old code # old code
assign assign
test cond
<new bb> #true <new bb> #true
catch catch
<old bb> #false <old bb> #false
@ -545,24 +545,28 @@ insert_cond_and_build_ssa_cfg (gimple_stmt_iterator *gp,
stmt_starts_bb_p (); stmt_starts_bb_p ();
stmt_ends_bb_p (); stmt_ends_bb_p ();
{ {
basic_block bb = ENTRY_BLOCK_PTR; basic_block bb_cond;
basic_block bb_catch;
basic_block bb_call;
edge edge_false;
edge edge_true;
// //
g = gsi_for_stmt (test); g = gsi_for_stmt (cond);
gsi_split_seq_before (&g, &test); gsi_split_seq_before (&g, &cond);
bb = create_basic_block (test, NULL, bb); bb_cond = create_basic_block (cond, NULL, bb);
gimple_set_bb (assign, bb); gimple_set_bb (assign, bb_cond);
gimple_set_bb (test, bb); gimple_set_bb (cond, bb_cond);
// EDGE_TRUE_VALUE // EDGE_TRUE_VALUE
g = gsi_for_stmt (catch); g = gsi_for_stmt (catch);
gsi_split_seq_before (&g, &catch); gsi_split_seq_before (&g, &catch);
bb = create_basic_block (catch, NULL, bb); bb_catch = create_basic_block (catch, NULL, bb_catch);
gimple_set_bb (catch, bb); gimple_set_bb (catch, bb_catch);
// // EDGE_FALSE_VALUE
g = gsi_for_stmt (call); /* Split the block between the catch and original call. */
gsi_split_seq_before (&g, &call); bb_call = gimple_bb (call);
bb = create_basic_block (call, NULL, bb); edge_false = split_block (bb_call, catch);
gimple_set_bb (call, bb); GIMPLE_CHECK (edge_false->dest->il.gimple.seq, GIMPLE_CALL);
} }
return; return;