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diff --git a/js/src/jsapi-tests/testJitMinimalFunc.h b/js/src/jsapi-tests/testJitMinimalFunc.h
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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/. */
+
+#ifndef jsapi_tests_jitTestGVN_h
+#define jsapi_tests_jitTestGVN_h
+
+#include "jit/IonAnalysis.h"
+#include "jit/MIRGenerator.h"
+#include "jit/MIRGraph.h"
+#include "jit/RangeAnalysis.h"
+#include "jit/ValueNumbering.h"
+
+namespace js {
+namespace jit {
+
+struct MinimalAlloc {
+ LifoAlloc lifo;
+ TempAllocator alloc;
+
+ // We are not testing the fallible allocator in these test cases, thus make
+ // the lifo alloc chunk extremely large for our test cases.
+ MinimalAlloc() : lifo(128 * 1024), alloc(&lifo) {
+ if (!alloc.ensureBallast()) {
+ MOZ_CRASH("[OOM] Not enough RAM for the test.");
+ }
+ }
+};
+
+struct MinimalFunc : MinimalAlloc {
+ JitCompileOptions options;
+ CompileInfo info;
+ MIRGraph graph;
+ MIRGenerator mir;
+ uint32_t numParams;
+
+ MinimalFunc()
+ : options(),
+ info(0),
+ graph(&alloc),
+ mir(static_cast<CompileRealm*>(nullptr), options, &alloc, &graph, &info,
+ static_cast<const OptimizationInfo*>(nullptr)),
+ numParams(0) {}
+
+ MBasicBlock* createEntryBlock() {
+ MBasicBlock* block =
+ MBasicBlock::New(graph, info, nullptr, MBasicBlock::NORMAL);
+ graph.addBlock(block);
+ return block;
+ }
+
+ MBasicBlock* createOsrEntryBlock() {
+ MBasicBlock* block =
+ MBasicBlock::New(graph, info, nullptr, MBasicBlock::NORMAL);
+ graph.addBlock(block);
+ graph.setOsrBlock(block);
+ return block;
+ }
+
+ MBasicBlock* createBlock(MBasicBlock* pred) {
+ MBasicBlock* block =
+ MBasicBlock::New(graph, info, pred, MBasicBlock::NORMAL);
+ graph.addBlock(block);
+ return block;
+ }
+
+ MParameter* createParameter() {
+ MParameter* p = MParameter::New(alloc, numParams++);
+ return p;
+ }
+
+ bool runGVN() {
+ if (!SplitCriticalEdges(graph)) {
+ return false;
+ }
+ RenumberBlocks(graph);
+ if (!BuildDominatorTree(graph)) {
+ return false;
+ }
+ if (!BuildPhiReverseMapping(graph)) {
+ return false;
+ }
+ ValueNumberer gvn(&mir, graph);
+ if (!gvn.run(ValueNumberer::DontUpdateAliasAnalysis)) {
+ return false;
+ }
+ return true;
+ }
+
+ bool runRangeAnalysis() {
+ if (!SplitCriticalEdges(graph)) {
+ return false;
+ }
+ RenumberBlocks(graph);
+ if (!BuildDominatorTree(graph)) {
+ return false;
+ }
+ if (!BuildPhiReverseMapping(graph)) {
+ return false;
+ }
+ RangeAnalysis rangeAnalysis(&mir, graph);
+ if (!rangeAnalysis.addBetaNodes()) {
+ return false;
+ }
+ if (!rangeAnalysis.analyze()) {
+ return false;
+ }
+ if (!rangeAnalysis.addRangeAssertions()) {
+ return false;
+ }
+ if (!rangeAnalysis.removeBetaNodes()) {
+ return false;
+ }
+ return true;
+ }
+};
+
+} // namespace jit
+} // namespace js
+
+#endif