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Issue 660175: Make another small virtual frame function inlined.... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 10 years, 9 months ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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30 #include "codegen-inl.h" 30 #include "codegen-inl.h"
31 #include "register-allocator-inl.h" 31 #include "register-allocator-inl.h"
32 #include "scopes.h" 32 #include "scopes.h"
33 #include "virtual-frame-inl.h" 33 #include "virtual-frame-inl.h"
34 34
35 namespace v8 { 35 namespace v8 {
36 namespace internal { 36 namespace internal {
37 37
38 #define __ ACCESS_MASM(masm()) 38 #define __ ACCESS_MASM(masm())
39 39
40 // -------------------------------------------------------------------------
41 // VirtualFrame implementation.
42
43 // On entry to a function, the virtual frame already contains the receiver,
44 // the parameters, and a return address. All frame elements are in memory.
45 VirtualFrame::VirtualFrame()
46 : elements_(parameter_count() + local_count() + kPreallocatedElements),
47 stack_pointer_(parameter_count() + 1) { // 0-based index of TOS.
48 for (int i = 0; i <= stack_pointer_; i++) {
49 elements_.Add(FrameElement::MemoryElement(NumberInfo::kUnknown));
50 }
51 for (int i = 0; i < RegisterAllocator::kNumRegisters; i++) {
52 register_locations_[i] = kIllegalIndex;
53 }
54 }
55
56
57 void VirtualFrame::Enter() { 40 void VirtualFrame::Enter() {
58 // Registers live on entry to a JS frame: 41 // Registers live on entry to a JS frame:
59 // rsp: stack pointer, points to return address from this function. 42 // rsp: stack pointer, points to return address from this function.
60 // rbp: base pointer, points to previous JS, ArgumentsAdaptor, or 43 // rbp: base pointer, points to previous JS, ArgumentsAdaptor, or
61 // Trampoline frame. 44 // Trampoline frame.
62 // rsi: context of this function call. 45 // rsi: context of this function call.
63 // rdi: pointer to this function object. 46 // rdi: pointer to this function object.
64 Comment cmnt(masm(), "[ Enter JS frame"); 47 Comment cmnt(masm(), "[ Enter JS frame");
65 48
66 #ifdef DEBUG 49 #ifdef DEBUG
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1134 // Grow the expression stack by handler size less one (the return 1117 // Grow the expression stack by handler size less one (the return
1135 // address is already pushed by a call instruction). 1118 // address is already pushed by a call instruction).
1136 Adjust(kHandlerSize - 1); 1119 Adjust(kHandlerSize - 1);
1137 __ PushTryHandler(IN_JAVASCRIPT, type); 1120 __ PushTryHandler(IN_JAVASCRIPT, type);
1138 } 1121 }
1139 1122
1140 1123
1141 #undef __ 1124 #undef __
1142 1125
1143 } } // namespace v8::internal 1126 } } // namespace v8::internal
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