5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // An XHandler is a C1 internal description for an exception handler
26
27 class XHandler: public CompilationResourceObj {
28 private:
29 ciExceptionHandler* _desc;
30
31 BlockBegin* _entry_block; // Entry block of xhandler
32 LIR_List* _entry_code; // LIR-operations that must be executed before jumping to entry_block
33 int _entry_pco; // pco where entry_code (or entry_block if no entry_code) starts
34 int _phi_operand; // For resolving of phi functions at begin of entry_block
35 int _scope_count; // for filling ExceptionRangeEntry::scope_count
36
37 #ifdef ASSERT
38 int _lir_op_id; // op_id of the LIR-operation throwing to this handler
39 #endif
40
41 public:
42 // creation
43 XHandler(ciExceptionHandler* desc)
44 : _desc(desc)
368
369
370 // Globally do instruction substitution and remove substituted
371 // instructions from the instruction list.
372 //
373
374 class SubstitutionResolver: public BlockClosure, ValueVisitor {
375 virtual void visit(Value* v);
376
377 public:
378 SubstitutionResolver(IR* hir) {
379 hir->iterate_preorder(this);
380 }
381
382 SubstitutionResolver(BlockBegin* block) {
383 block->iterate_preorder(this);
384 }
385
386 virtual void block_do(BlockBegin* block);
387 };
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5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_C1_C1_IR_HPP
26 #define SHARE_VM_C1_C1_IR_HPP
27
28 #include "c1/c1_Instruction.hpp"
29 #include "ci/ciExceptionHandler.hpp"
30 #include "ci/ciMethod.hpp"
31 #include "ci/ciStreams.hpp"
32 #include "memory/allocation.hpp"
33
34 // An XHandler is a C1 internal description for an exception handler
35
36 class XHandler: public CompilationResourceObj {
37 private:
38 ciExceptionHandler* _desc;
39
40 BlockBegin* _entry_block; // Entry block of xhandler
41 LIR_List* _entry_code; // LIR-operations that must be executed before jumping to entry_block
42 int _entry_pco; // pco where entry_code (or entry_block if no entry_code) starts
43 int _phi_operand; // For resolving of phi functions at begin of entry_block
44 int _scope_count; // for filling ExceptionRangeEntry::scope_count
45
46 #ifdef ASSERT
47 int _lir_op_id; // op_id of the LIR-operation throwing to this handler
48 #endif
49
50 public:
51 // creation
52 XHandler(ciExceptionHandler* desc)
53 : _desc(desc)
377
378
379 // Globally do instruction substitution and remove substituted
380 // instructions from the instruction list.
381 //
382
383 class SubstitutionResolver: public BlockClosure, ValueVisitor {
384 virtual void visit(Value* v);
385
386 public:
387 SubstitutionResolver(IR* hir) {
388 hir->iterate_preorder(this);
389 }
390
391 SubstitutionResolver(BlockBegin* block) {
392 block->iterate_preorder(this);
393 }
394
395 virtual void block_do(BlockBegin* block);
396 };
397
398 #endif // SHARE_VM_C1_C1_IR_HPP
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