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v8/test/cctest/interpreter/bytecode_expectations/GenerateTestUndetectable.golden
Seth Brenith 7be64db45f Reland "[interpreter] Short Star bytecode" 
This is a reland of cf93071c91

Original change's description:
> [interpreter] Short Star bytecode
>
> Design doc:
> https://docs.google.com/document/d/1g_NExMT78II_KnIYNa9MvyPYIj23qAiFUEsyemY5KRk/edit
>
> This change adds 16 new interpreter opcodes, kStar0 through kStar15, so
> that we can use a single byte to represent the common operation of
> storing to a low-numbered register. This generally reduces the quantity
> of bytecode generated on web sites by 8-9%.
>
> In order to not degrade speed, a couple of other changes are required:
>
> The existing lookahead logic to check for Star after certain other
> bytecode handlers is updated to check for these new short Star codes
> instead. Furthermore, that lookahead logic is updated to contain its own
> copy of the dispatch jump rather than merging control flow with the
> lookahead-failed case, to improve branch prediction.
>
> A bunch of constants use bytecode size in bytes as a proxy for the size
> or complexity of a function, and are adjusted downward proportionally to
> the decrease in generated bytecode size.
>
> Other small drive-by fix: update generate-bytecode-expectations to emit
> \n instead of \r\n on Windows.
>
> Change-Id: I6307c2b0f5794a3a1088bb0fb94f6e1615441ed5
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2641180
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
> Cr-Commit-Position: refs/heads/master@{#72773}

Change-Id: I1afb670c25694498b3989de615858f984a8c7f6f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2698057
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72821}
2021-02-17 16:18:26 +00:00

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#
# Autogenerated by generate-bytecode-expectations.
#
---
wrap: yes
---
snippet: "
var obj_a = {val:1};
var b = 10;
if (obj_a == null) { b = 20;}
return b;
"
frame size: 2
parameter count: 1
bytecode array length: 19
bytecodes: [
/* 46 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(41),
B(Star0),
/* 63 S> */ B(LdaSmi), I8(10),
B(Star1),
/* 67 S> */ B(Ldar), R(0),
B(TestUndetectable),
B(JumpIfFalse), U8(5),
/* 88 S> */ B(LdaSmi), I8(20),
B(Star1),
/* 97 S> */ B(Ldar), R(1),
/* 106 S> */ B(Return),
]
constant pool: [
OBJECT_BOILERPLATE_DESCRIPTION_TYPE,
]
handlers: [
]
---
snippet: "
var obj_a = {val:1};
var b = 10;
if (obj_a == undefined) { b = 20;}
return b;
"
frame size: 2
parameter count: 1
bytecode array length: 19
bytecodes: [
/* 46 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(41),
B(Star0),
/* 63 S> */ B(LdaSmi), I8(10),
B(Star1),
/* 67 S> */ B(Ldar), R(0),
B(TestUndetectable),
B(JumpIfFalse), U8(5),
/* 93 S> */ B(LdaSmi), I8(20),
B(Star1),
/* 102 S> */ B(Ldar), R(1),
/* 111 S> */ B(Return),
]
constant pool: [
OBJECT_BOILERPLATE_DESCRIPTION_TYPE,
]
handlers: [
]
---
snippet: "
var obj_a = {val:1};
var b = 10;
if (obj_a != null) { b = 20;}
return b;
"
frame size: 2
parameter count: 1
bytecode array length: 19
bytecodes: [
/* 46 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(41),
B(Star0),
/* 63 S> */ B(LdaSmi), I8(10),
B(Star1),
/* 67 S> */ B(Ldar), R(0),
B(TestUndetectable),
B(JumpIfTrue), U8(5),
/* 88 S> */ B(LdaSmi), I8(20),
B(Star1),
/* 97 S> */ B(Ldar), R(1),
/* 106 S> */ B(Return),
]
constant pool: [
OBJECT_BOILERPLATE_DESCRIPTION_TYPE,
]
handlers: [
]
---
snippet: "
var obj_a = {val:1};
var b = 10;
if (obj_a != undefined) { b = 20;}
return b;
"
frame size: 2
parameter count: 1
bytecode array length: 19
bytecodes: [
/* 46 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(41),
B(Star0),
/* 63 S> */ B(LdaSmi), I8(10),
B(Star1),
/* 67 S> */ B(Ldar), R(0),
B(TestUndetectable),
B(JumpIfTrue), U8(5),
/* 93 S> */ B(LdaSmi), I8(20),
B(Star1),
/* 102 S> */ B(Ldar), R(1),
/* 111 S> */ B(Return),
]
constant pool: [
OBJECT_BOILERPLATE_DESCRIPTION_TYPE,
]
handlers: [
]
---
snippet: "
var obj_a = {val:1};
var b = 10;
if (obj_a === null) { b = 20;}
return b;
"
frame size: 2
parameter count: 1
bytecode array length: 18
bytecodes: [
/* 46 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(41),
B(Star0),
/* 63 S> */ B(LdaSmi), I8(10),
B(Star1),
/* 67 S> */ B(Ldar), R(0),
B(JumpIfNotNull), U8(5),
/* 89 S> */ B(LdaSmi), I8(20),
B(Star1),
/* 98 S> */ B(Ldar), R(1),
/* 107 S> */ B(Return),
]
constant pool: [
OBJECT_BOILERPLATE_DESCRIPTION_TYPE,
]
handlers: [
]
---
snippet: "
var obj_a = {val:1};
var b = 10;
if (obj_a === undefined) { b = 20;}
return b;
"
frame size: 2
parameter count: 1
bytecode array length: 18
bytecodes: [
/* 46 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(41),
B(Star0),
/* 63 S> */ B(LdaSmi), I8(10),
B(Star1),
/* 67 S> */ B(Ldar), R(0),
B(JumpIfNotUndefined), U8(5),
/* 94 S> */ B(LdaSmi), I8(20),
B(Star1),
/* 103 S> */ B(Ldar), R(1),
/* 112 S> */ B(Return),
]
constant pool: [
OBJECT_BOILERPLATE_DESCRIPTION_TYPE,
]
handlers: [
]
---
snippet: "
var obj_a = {val:1};
var b = 10;
if (obj_a !== null) { b = 20;}
return b;
"
frame size: 2
parameter count: 1
bytecode array length: 18
bytecodes: [
/* 46 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(41),
B(Star0),
/* 63 S> */ B(LdaSmi), I8(10),
B(Star1),
/* 67 S> */ B(Ldar), R(0),
B(JumpIfNull), U8(5),
/* 89 S> */ B(LdaSmi), I8(20),
B(Star1),
/* 98 S> */ B(Ldar), R(1),
/* 107 S> */ B(Return),
]
constant pool: [
OBJECT_BOILERPLATE_DESCRIPTION_TYPE,
]
handlers: [
]
---
snippet: "
var obj_a = {val:1};
var b = 10;
if (obj_a !== undefined) { b = 20;}
return b;
"
frame size: 2
parameter count: 1
bytecode array length: 18
bytecodes: [
/* 46 S> */ B(CreateObjectLiteral), U8(0), U8(0), U8(41),
B(Star0),
/* 63 S> */ B(LdaSmi), I8(10),
B(Star1),
/* 67 S> */ B(Ldar), R(0),
B(JumpIfUndefined), U8(5),
/* 94 S> */ B(LdaSmi), I8(20),
B(Star1),
/* 103 S> */ B(Ldar), R(1),
/* 112 S> */ B(Return),
]
constant pool: [
OBJECT_BOILERPLATE_DESCRIPTION_TYPE,
]
handlers: [
]
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