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support JIT compiling methods with unsorted exception handler tables

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This commit is contained in:
Joel Dice 2008-01-25 17:17:27 -07:00
parent aa081089ce
commit 8150b957c9
1 changed files with 41 additions and 27 deletions
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68
src/compile.cpp
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@ -3807,39 +3807,53 @@ compile(MyThread* t, Context* context)
if (eht) {
PROTECT(t, eht);
for (unsigned i = 0; i < exceptionHandlerTableLength(t, eht); ++i) {
ExceptionHandler* eh = exceptionHandlerTableBody(t, eht, i);
unsigned start = exceptionHandlerStart(eh);
unsigned visitCount = exceptionHandlerTableLength(t, eht);
bool visited[visitCount];
memset(visited, 0, visitCount);
assert(t, context->visitTable[start]);
uintptr_t stackMap[stackMapSizeInWords(t, context->method)];
Frame frame2(&frame, stackMap);
while (visitCount) {
bool progress = false;
uintptr_t* roots = context->rootTable
+ (start * frameMapSizeInWords(t, context->method));
for (unsigned i = 0; i < exceptionHandlerTableLength(t, eht); ++i) {
ExceptionHandler* eh = exceptionHandlerTableBody(t, eht, i);
unsigned start = exceptionHandlerStart(eh);
for (unsigned i = 0; i < localSize(t, context->method); ++ i) {
if (getBit(roots, i)) {
frame2.mark(i);
} else {
frame2.clear(i);
if (not visited[i] and context->visitTable[start]) {
-- visitCount;
visited[i] = true;
progress = true;
uintptr_t stackMap[stackMapSizeInWords(t, context->method)];
Frame frame2(&frame, stackMap);
uintptr_t* roots = context->rootTable
+ (start * frameMapSizeInWords(t, context->method));
for (unsigned i = 0; i < localSize(t, context->method); ++ i) {
if (getBit(roots, i)) {
frame2.mark(i);
} else {
frame2.clear(i);
}
}
frame2.pushObject();
for (unsigned i = 1;
i < codeMaxStack(t, methodCode(t, context->method));
++i)
{
frame2.clear(localSize(t, context->method) + i);
}
compile(t, &frame2, exceptionHandlerIp(eh));
if (UNLIKELY(t->exception)) return 0;
eventIndex = calculateFrameMaps(t, context, 0, eventIndex);
}
}
frame2.pushObject();
for (unsigned i = 1;
i < codeMaxStack(t, methodCode(t, context->method));
++i)
{
frame2.clear(localSize(t, context->method) + i);
}
compile(t, &frame2, exceptionHandlerIp(eh));
if (UNLIKELY(t->exception)) return 0;
eventIndex = calculateFrameMaps(t, context, 0, eventIndex);
assert(t, progress);
}
}