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[runtime] Remove unused prefix_argc from GetCallerArguments.

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We always call GetCallerArguments with 0 for prefix_argc, and so there's
no use in having that parameter at all.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1662953002

Cr-Commit-Position: refs/heads/master@{#33694}
This commit is contained in:
bmeurer 2016-02-02 22:21:49 -08:00 committed by Commit bot
parent e4e418f3ef
commit 8ecbc2c5d6
1 changed files with 10 additions and 12 deletions
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22
src/runtime/runtime-scopes.cc
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@ -414,10 +414,8 @@ RUNTIME_FUNCTION(Runtime_InitializeLegacyConstLookupSlot) {
namespace {
// Find the arguments of the JavaScript function invocation that called
// into C++ code. Collect these in a newly allocated array of handles (possibly
// prefixed by a number of empty handles).
// into C++ code. Collect these in a newly allocated array of handles.
base::SmartArrayPointer<Handle<Object>> GetCallerArguments(Isolate* isolate,
int prefix_argc,
int* total_argc) {
// Find frame containing arguments passed to the caller.
JavaScriptFrameIterator it(isolate);
@ -442,14 +440,14 @@ base::SmartArrayPointer<Handle<Object>> GetCallerArguments(Isolate* isolate,
iter++;
argument_count--;
*total_argc = prefix_argc + argument_count;
*total_argc = argument_count;
base::SmartArrayPointer<Handle<Object>> param_data(
NewArray<Handle<Object>>(*total_argc));
bool should_deoptimize = false;
for (int i = 0; i < argument_count; i++) {
should_deoptimize = should_deoptimize || iter->IsMaterializedObject();
Handle<Object> value = iter->GetValue();
param_data[prefix_argc + i] = value;
param_data[i] = value;
iter++;
}
@ -463,12 +461,12 @@ base::SmartArrayPointer<Handle<Object>> GetCallerArguments(Isolate* isolate,
frame = it.frame();
int args_count = frame->ComputeParametersCount();
*total_argc = prefix_argc + args_count;
*total_argc = args_count;
base::SmartArrayPointer<Handle<Object>> param_data(
NewArray<Handle<Object>>(*total_argc));
for (int i = 0; i < args_count; i++) {
Handle<Object> val = Handle<Object>(frame->GetParameter(i), isolate);
param_data[prefix_argc + i] = val;
param_data[i] = val;
}
return param_data;
}
@ -634,7 +632,7 @@ RUNTIME_FUNCTION(Runtime_NewSloppyArguments_Generic) {
// inlined, we use the slow but accurate {GetCallerArguments}.
int argument_count = 0;
base::SmartArrayPointer<Handle<Object>> arguments =
GetCallerArguments(isolate, 0, &argument_count);
GetCallerArguments(isolate, &argument_count);
HandleArguments argument_getter(arguments.get());
return *NewSloppyArguments(isolate, callee, argument_getter, argument_count);
}
@ -648,7 +646,7 @@ RUNTIME_FUNCTION(Runtime_NewStrictArguments_Generic) {
// inlined, we use the slow but accurate {GetCallerArguments}.
int argument_count = 0;
base::SmartArrayPointer<Handle<Object>> arguments =
GetCallerArguments(isolate, 0, &argument_count);
GetCallerArguments(isolate, &argument_count);
HandleArguments argument_getter(arguments.get());
return *NewStrictArguments(isolate, callee, argument_getter, argument_count);
}
@ -663,7 +661,7 @@ RUNTIME_FUNCTION(Runtime_NewRestArguments_Generic) {
// inlined, we use the slow but accurate {GetCallerArguments}.
int argument_count = 0;
base::SmartArrayPointer<Handle<Object>> arguments =
GetCallerArguments(isolate, 0, &argument_count);
GetCallerArguments(isolate, &argument_count);
HandleArguments argument_getter(arguments.get());
return *NewRestArguments(isolate, callee, argument_getter, argument_count,
start_index);
@ -1175,7 +1173,7 @@ RUNTIME_FUNCTION(Runtime_ArgumentsLength) {
HandleScope scope(isolate);
DCHECK(args.length() == 0);
int argument_count = 0;
GetCallerArguments(isolate, 0, &argument_count);
GetCallerArguments(isolate, &argument_count);
return Smi::FromInt(argument_count);
}
@ -1188,7 +1186,7 @@ RUNTIME_FUNCTION(Runtime_Arguments) {
// Determine the actual arguments passed to the function.
int argument_count_signed = 0;
base::SmartArrayPointer<Handle<Object>> arguments =
GetCallerArguments(isolate, 0, &argument_count_signed);
GetCallerArguments(isolate, &argument_count_signed);
const uint32_t argument_count = argument_count_signed;
// Try to convert the key to an index. If successful and within