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-rw-r--r--js/src/jit/JSONSpewer.cpp287
1 files changed, 287 insertions, 0 deletions
diff --git a/js/src/jit/JSONSpewer.cpp b/js/src/jit/JSONSpewer.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifdef JS_JITSPEW
+
+# include "jit/JSONSpewer.h"
+
+# include "jit/BacktrackingAllocator.h"
+# include "jit/LIR.h"
+# include "jit/MIR.h"
+# include "jit/MIRGraph.h"
+# include "jit/RangeAnalysis.h"
+
+using namespace js;
+using namespace js::jit;
+
+void JSONSpewer::beginFunction(JSScript* script) {
+ beginObject();
+ formatProperty("name", "%s:%u", script->filename(), script->lineno());
+ beginListProperty("passes");
+}
+
+void JSONSpewer::beginWasmFunction(unsigned funcIndex) {
+ beginObject();
+ formatProperty("name", "wasm-func%u", funcIndex);
+ beginListProperty("passes");
+}
+
+void JSONSpewer::beginPass(const char* pass) {
+ beginObject();
+ property("name", pass);
+}
+
+void JSONSpewer::spewMResumePoint(MResumePoint* rp) {
+ if (!rp) {
+ return;
+ }
+
+ beginObjectProperty("resumePoint");
+
+ if (rp->caller()) {
+ property("caller", rp->caller()->block()->id());
+ }
+
+ property("mode", ResumeModeToString(rp->mode()));
+
+ beginListProperty("operands");
+ for (MResumePoint* iter = rp; iter; iter = iter->caller()) {
+ for (int i = iter->numOperands() - 1; i >= 0; i--) {
+ value(iter->getOperand(i)->id());
+ }
+ if (iter->caller()) {
+ value("|");
+ }
+ }
+ endList();
+
+ endObject();
+}
+
+void JSONSpewer::spewMDef(MDefinition* def) {
+ beginObject();
+
+ property("id", def->id());
+
+ propertyName("opcode");
+ out_.printf("\"");
+ def->printOpcode(out_);
+ out_.printf("\"");
+
+ beginListProperty("attributes");
+# define OUTPUT_ATTRIBUTE(X) \
+ do { \
+ if (def->is##X()) value(#X); \
+ } while (0);
+ MIR_FLAG_LIST(OUTPUT_ATTRIBUTE);
+# undef OUTPUT_ATTRIBUTE
+ endList();
+
+ beginListProperty("inputs");
+ for (size_t i = 0, e = def->numOperands(); i < e; i++) {
+ value(def->getOperand(i)->id());
+ }
+ endList();
+
+ beginListProperty("uses");
+ for (MUseDefIterator use(def); use; use++) {
+ value(use.def()->id());
+ }
+ endList();
+
+ if (!def->isLowered()) {
+ beginListProperty("memInputs");
+ if (def->dependency()) {
+ value(def->dependency()->id());
+ }
+ endList();
+ }
+
+ bool isTruncated = false;
+ if (def->isAdd() || def->isSub() || def->isMod() || def->isMul() ||
+ def->isDiv()) {
+ isTruncated = static_cast<MBinaryArithInstruction*>(def)->isTruncated();
+ }
+
+ if (def->type() != MIRType::None && def->range()) {
+ beginStringProperty("type");
+ def->range()->dump(out_);
+ out_.printf(" : %s%s", StringFromMIRType(def->type()),
+ (isTruncated ? " (t)" : ""));
+ endStringProperty();
+ } else {
+ formatProperty("type", "%s%s", StringFromMIRType(def->type()),
+ (isTruncated ? " (t)" : ""));
+ }
+
+ if (def->isInstruction()) {
+ if (MResumePoint* rp = def->toInstruction()->resumePoint()) {
+ spewMResumePoint(rp);
+ }
+ }
+
+ endObject();
+}
+
+void JSONSpewer::spewMIR(MIRGraph* mir) {
+ beginObjectProperty("mir");
+ beginListProperty("blocks");
+
+ for (MBasicBlockIterator block(mir->begin()); block != mir->end(); block++) {
+ beginObject();
+
+ property("number", block->id());
+
+ beginListProperty("attributes");
+ if (block->hasLastIns()) {
+ if (block->isLoopBackedge()) {
+ value("backedge");
+ }
+ if (block->isLoopHeader()) {
+ value("loopheader");
+ }
+ if (block->isSplitEdge()) {
+ value("splitedge");
+ }
+ }
+ endList();
+
+ beginListProperty("predecessors");
+ for (size_t i = 0; i < block->numPredecessors(); i++) {
+ value(block->getPredecessor(i)->id());
+ }
+ endList();
+
+ beginListProperty("successors");
+ if (block->hasLastIns()) {
+ for (size_t i = 0; i < block->numSuccessors(); i++) {
+ value(block->getSuccessor(i)->id());
+ }
+ }
+ endList();
+
+ beginListProperty("instructions");
+ for (MPhiIterator phi(block->phisBegin()); phi != block->phisEnd(); phi++) {
+ spewMDef(*phi);
+ }
+ for (MInstructionIterator i(block->begin()); i != block->end(); i++) {
+ spewMDef(*i);
+ }
+ endList();
+
+ spewMResumePoint(block->entryResumePoint());
+
+ endObject();
+ }
+
+ endList();
+ endObject();
+}
+
+void JSONSpewer::spewLIns(LNode* ins) {
+ beginObject();
+
+ property("id", ins->id());
+
+ propertyName("opcode");
+ out_.printf("\"");
+ ins->dump(out_);
+ out_.printf("\"");
+
+ beginListProperty("defs");
+ for (size_t i = 0; i < ins->numDefs(); i++) {
+ if (ins->isPhi()) {
+ value(ins->toPhi()->getDef(i)->virtualRegister());
+ } else {
+ value(ins->toInstruction()->getDef(i)->virtualRegister());
+ }
+ }
+ endList();
+
+ endObject();
+}
+
+void JSONSpewer::spewLIR(MIRGraph* mir) {
+ beginObjectProperty("lir");
+ beginListProperty("blocks");
+
+ for (MBasicBlockIterator i(mir->begin()); i != mir->end(); i++) {
+ LBlock* block = i->lir();
+ if (!block) {
+ continue;
+ }
+
+ beginObject();
+ property("number", i->id());
+
+ beginListProperty("instructions");
+ for (size_t p = 0; p < block->numPhis(); p++) {
+ spewLIns(block->getPhi(p));
+ }
+ for (LInstructionIterator ins(block->begin()); ins != block->end(); ins++) {
+ spewLIns(*ins);
+ }
+ endList();
+
+ endObject();
+ }
+
+ endList();
+ endObject();
+}
+
+void JSONSpewer::spewRanges(BacktrackingAllocator* regalloc) {
+ beginObjectProperty("ranges");
+ beginListProperty("blocks");
+
+ for (size_t bno = 0; bno < regalloc->graph.numBlocks(); bno++) {
+ beginObject();
+ property("number", bno);
+ beginListProperty("vregs");
+
+ LBlock* lir = regalloc->graph.getBlock(bno);
+ for (LInstructionIterator ins = lir->begin(); ins != lir->end(); ins++) {
+ for (size_t k = 0; k < ins->numDefs(); k++) {
+ uint32_t id = ins->getDef(k)->virtualRegister();
+ VirtualRegister* vreg = &regalloc->vregs[id];
+
+ beginObject();
+ property("vreg", id);
+ beginListProperty("ranges");
+
+ for (LiveRange::RegisterLinkIterator iter = vreg->rangesBegin(); iter;
+ iter++) {
+ LiveRange* range = LiveRange::get(*iter);
+
+ beginObject();
+ property("allocation",
+ range->bundle()->allocation().toString().get());
+ property("start", range->from().bits());
+ property("end", range->to().bits());
+ endObject();
+ }
+
+ endList();
+ endObject();
+ }
+ }
+
+ endList();
+ endObject();
+ }
+
+ endList();
+ endObject();
+}
+
+void JSONSpewer::endPass() { endObject(); }
+
+void JSONSpewer::endFunction() {
+ endList();
+ endObject();
+}
+
+#endif /* JS_JITSPEW */