2 * Copyright (C) 2009 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include "CompilerInternals.h"
20 /* Allocate a new basic block */
21 BasicBlock *dvmCompilerNewBB(BBType blockType)
23 BasicBlock *bb = dvmCompilerNew(sizeof(BasicBlock), true);
24 bb->blockType = blockType;
28 /* Insert an MIR instruction to the end of a basic block */
29 void dvmCompilerAppendMIR(BasicBlock *bb, MIR *mir)
31 if (bb->firstMIRInsn == NULL) {
32 assert(bb->lastMIRInsn == NULL);
33 bb->lastMIRInsn = bb->firstMIRInsn = mir;
34 mir->prev = mir->next = NULL;
36 bb->lastMIRInsn->next = mir;
37 mir->prev = bb->lastMIRInsn;
39 bb->lastMIRInsn = mir;
43 /* Insert an MIR instruction to the head of a basic block */
44 void dvmCompilerPrependMIR(BasicBlock *bb, MIR *mir)
46 if (bb->firstMIRInsn == NULL) {
47 assert(bb->lastMIRInsn == NULL);
48 bb->lastMIRInsn = bb->firstMIRInsn = mir;
49 mir->prev = mir->next = NULL;
51 bb->firstMIRInsn->prev = mir;
52 mir->next = bb->firstMIRInsn;
54 bb->firstMIRInsn = mir;
59 * Append an LIR instruction to the LIR list maintained by a compilation
62 void dvmCompilerAppendLIR(CompilationUnit *cUnit, LIR *lir)
64 if (cUnit->firstLIRInsn == NULL) {
65 assert(cUnit->lastLIRInsn == NULL);
66 cUnit->lastLIRInsn = cUnit->firstLIRInsn = lir;
67 lir->prev = lir->next = NULL;
69 cUnit->lastLIRInsn->next = lir;
70 lir->prev = cUnit->lastLIRInsn;
72 cUnit->lastLIRInsn = lir;
77 * Insert an LIR instruction before the current instruction, which cannot be the
80 * prevLIR <-> newLIR <-> currentLIR
82 void dvmCompilerInsertLIRBefore(LIR *currentLIR, LIR *newLIR)
84 if (currentLIR->prev == NULL)
86 LIR *prevLIR = currentLIR->prev;
88 prevLIR->next = newLIR;
89 newLIR->prev = prevLIR;
90 newLIR->next = currentLIR;
91 currentLIR->prev = newLIR;