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Diffstat (limited to 'deps/v8/test/cctest/test-debug.cc')
-rw-r--r--deps/v8/test/cctest/test-debug.cc139
1 files changed, 126 insertions, 13 deletions
diff --git a/deps/v8/test/cctest/test-debug.cc b/deps/v8/test/cctest/test-debug.cc
index dd483c06d5..ab27f394e9 100644
--- a/deps/v8/test/cctest/test-debug.cc
+++ b/deps/v8/test/cctest/test-debug.cc
@@ -2747,7 +2747,7 @@ TEST(DebugStepKeyedLoadLoop) {
foo->Call(context, env->Global(), kArgc, args).ToLocalChecked();
// With stepping all break locations are hit.
- CHECK_EQ(45, break_point_hit_count);
+ CHECK_EQ(44, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
@@ -2888,7 +2888,6 @@ static void DoDebugStepNamedStoreLoop(int expected) {
// Test of the stepping mechanism for named load in a loop.
TEST(DebugStepNamedStoreLoop) { DoDebugStepNamedStoreLoop(34); }
-
// Test the stepping mechanism with different ICs.
TEST(DebugStepLinearMixedICs) {
DebugLocalContext env;
@@ -2917,7 +2916,7 @@ TEST(DebugStepLinearMixedICs) {
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
// With stepping all break locations are hit.
- CHECK_EQ(11, break_point_hit_count);
+ CHECK_EQ(10, break_point_hit_count);
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
CheckDebuggerUnloaded(env->GetIsolate());
@@ -2964,7 +2963,7 @@ TEST(DebugStepDeclarations) {
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
- CHECK_EQ(6, break_point_hit_count);
+ CHECK_EQ(5, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
@@ -2998,7 +2997,7 @@ TEST(DebugStepLocals) {
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
- CHECK_EQ(6, break_point_hit_count);
+ CHECK_EQ(5, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr);
@@ -3459,26 +3458,25 @@ TEST(DebugConditional) {
v8::Local<v8::Context> context = env.context();
// Create a function for testing stepping. Run it to allow it to get
// optimized.
- const char* src = "function foo(x) { "
- " var a;"
- " a = x ? 1 : 2;"
- " return a;"
- "}"
- "foo()";
+ const char* src =
+ "function foo(x) { "
+ " return x ? 1 : 2;"
+ "}"
+ "foo()";
v8::Local<v8::Function> foo = CompileFunction(&env, src, "foo");
SetBreakPoint(foo, 0); // "var a;"
step_action = StepIn;
break_point_hit_count = 0;
foo->Call(context, env->Global(), 0, NULL).ToLocalChecked();
- CHECK_EQ(4, break_point_hit_count);
+ CHECK_EQ(2, break_point_hit_count);
step_action = StepIn;
break_point_hit_count = 0;
const int argc = 1;
v8::Local<v8::Value> argv_true[argc] = {v8::True(isolate)};
foo->Call(context, env->Global(), argc, argv_true).ToLocalChecked();
- CHECK_EQ(4, break_point_hit_count);
+ CHECK_EQ(2, break_point_hit_count);
// Get rid of the debug event listener.
v8::Debug::SetDebugEventListener(isolate, nullptr);
@@ -8072,3 +8070,118 @@ TEST(BreakLocationIterator) {
DisableDebugger(isolate);
}
+
+TEST(DisableTailCallElimination) {
+ i::FLAG_allow_natives_syntax = true;
+ i::FLAG_harmony_tailcalls = true;
+ // TODO(ishell, 4698): Investigate why TurboFan in --always-opt mode makes
+ // stack[2].getFunctionName() return null.
+ i::FLAG_turbo_inlining = false;
+
+ DebugLocalContext env;
+ v8::Isolate* isolate = env->GetIsolate();
+ v8::HandleScope scope(isolate);
+ CHECK(v8::Debug::IsTailCallEliminationEnabled(isolate));
+
+ CompileRun(
+ "'use strict'; \n"
+ "Error.prepareStackTrace = (error,stack) => { \n"
+ " error.strace = stack; \n"
+ " return error.message + \"\\n at \" + stack.join(\"\\n at \"); \n"
+ "} \n"
+ " \n"
+ "function getCaller() { \n"
+ " var e = new Error(); \n"
+ " e.stack; // prepare stack trace \n"
+ " var stack = e.strace; \n"
+ " %GlobalPrint('caller: '); \n"
+ " %GlobalPrint(stack[2].getFunctionName()); \n"
+ " %GlobalPrint('\\n'); \n"
+ " return stack[2].getFunctionName(); \n"
+ "} \n"
+ "function f() { \n"
+ " var caller = getCaller(); \n"
+ " if (caller === 'g') return 1; \n"
+ " if (caller === 'h') return 2; \n"
+ " return 0; \n"
+ "} \n"
+ "function g() { \n"
+ " return f(); \n"
+ "} \n"
+ "function h() { \n"
+ " var result = g(); \n"
+ " return result; \n"
+ "} \n"
+ "%NeverOptimizeFunction(getCaller); \n"
+ "%NeverOptimizeFunction(f); \n"
+ "%NeverOptimizeFunction(h); \n"
+ "");
+ ExpectInt32("h();", 2);
+ ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 2);
+ v8::Debug::SetTailCallEliminationEnabled(isolate, false);
+ CHECK(!v8::Debug::IsTailCallEliminationEnabled(isolate));
+ ExpectInt32("h();", 1);
+ ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 1);
+ v8::Debug::SetTailCallEliminationEnabled(isolate, true);
+ CHECK(v8::Debug::IsTailCallEliminationEnabled(isolate));
+ ExpectInt32("h();", 2);
+ ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 2);
+}
+
+TEST(DebugStepNextTailCallEliminiation) {
+ i::FLAG_allow_natives_syntax = true;
+ i::FLAG_harmony_tailcalls = true;
+ // TODO(ishell, 4698): Investigate why TurboFan in --always-opt mode makes
+ // stack[2].getFunctionName() return null.
+ i::FLAG_turbo_inlining = false;
+
+ DebugLocalContext env;
+ env.ExposeDebug();
+ v8::Isolate* isolate = env->GetIsolate();
+ v8::HandleScope scope(isolate);
+ CHECK(v8::Debug::IsTailCallEliminationEnabled(isolate));
+
+ const char* source =
+ "'use strict'; \n"
+ "var Debug = debug.Debug; \n"
+ "var exception = null; \n"
+ "var breaks = 0; \n"
+ "var log = []; \n"
+ "function f(x) { \n"
+ " if (x == 2) { \n"
+ " debugger; // Break a \n"
+ " } \n"
+ " if (x-- > 0) { // Break b \n"
+ " return f(x); // Break c \n"
+ " } \n"
+ "} // Break e \n"
+ "function listener(event, exec_state, event_data, data) {\n"
+ " if (event != Debug.DebugEvent.Break) return; \n"
+ " try { \n"
+ " var line = exec_state.frame(0).sourceLineText(); \n"
+ " var col = exec_state.frame(0).sourceColumn(); \n"
+ " var match = line.match(/\\/\\/ Break (\\w)/); \n"
+ " log.push(match[1] + col); \n"
+ " exec_state.prepareStep(Debug.StepAction.StepNext); \n"
+ " } catch (e) { \n"
+ " exception = e; \n"
+ " }; \n"
+ "}; \n"
+ "Debug.setListener(listener); \n"
+ "f(4); \n"
+ "Debug.setListener(null); // Break d \n";
+
+ CompileRun(source);
+ ExpectNull("exception");
+ ExpectString("JSON.stringify(log)", "[\"a4\",\"b2\",\"c4\",\"c11\",\"d0\"]");
+
+ v8::Debug::SetTailCallEliminationEnabled(isolate, false);
+ CompileRun(
+ "log = []; \n"
+ "Debug.setListener(listener); \n"
+ "f(5); \n"
+ "Debug.setListener(null); // Break f \n");
+ ExpectNull("exception");
+ ExpectString("JSON.stringify(log)",
+ "[\"a4\",\"b2\",\"c4\",\"e0\",\"e0\",\"e0\",\"e0\",\"f0\"]");
+}
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