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Port Math.random change to MIPS.

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TEST=

Review URL: http://codereview.chromium.org/9107006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10386 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
ager@chromium.org 2012-01-11 12:19:11 +00:00
parent 6420887ff1
commit 430c64d182
3 changed files with 45 additions and 3 deletions
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23
src/mips/lithium-codegen-mips.cc
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@ -1,4 +1,4 @@
// Copyright 2011 the V8 project authors. All rights reserved.
// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
@ -3095,6 +3095,27 @@ void LCodeGen::DoPower(LPower* instr) {
}
void LCodeGen::DoRandom(LRandom* instr) {
// Having marked this instruction as a call we can use any
// registers.
ASSERT(ToDoubleRegister(instr->result()).is(f0));
ASSERT(ToRegister(instr->InputAt(0)).is(a0));
__ PrepareCallCFunction(1, a1);
__ lw(a0, FieldMemOperand(a0, GlobalObject::kGlobalContextOffset));
__ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1);
// 0x41300000 is the top half of 1.0 x 2^20 as a double.
__ li(a2, Operand(0x41300000));
// Move 0x41300000xxxxxxxx (x = random bits in v0) to FPU.
__ Move(f12, v0, a2);
// Move 0x4130000000000000 to FPU.
__ Move(f14, zero_reg, a2);
// Subtract to get the result.
__ sub_d(f0, f12, f14);
}
void LCodeGen::DoMathLog(LUnaryMathOperation* instr) {
ASSERT(ToDoubleRegister(instr->result()).is(f4));
TranscendentalCacheStub stub(TranscendentalCache::LOG,

11
src/mips/lithium-mips.cc
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@ -1,4 +1,4 @@
// Copyright 2011 the V8 project authors. All rights reserved.
// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
@ -1428,6 +1428,15 @@ LInstruction* LChunkBuilder::DoPower(HPower* instr) {
}
LInstruction* LChunkBuilder::DoRandom(HRandom* instr) {
ASSERT(instr->representation().IsDouble());
ASSERT(instr->global_object()->representation().IsTagged());
LOperand* global_object = UseFixed(instr->global_object(), a0);
LRandom* result = new LRandom(global_object);
return MarkAsCall(DefineFixedDouble(result, f0), instr);
}
LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
Representation r = instr->GetInputRepresentation();
ASSERT(instr->left()->representation().IsTagged());

14
src/mips/lithium-mips.h
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@ -1,4 +1,4 @@
// Copyright 2011 the V8 project authors. All rights reserved.
// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
@ -141,6 +141,7 @@ class LCodeGen;
V(Parameter) \
V(Power) \
V(PushArgument) \
V(Random) \
V(RegExpLiteral) \
V(Return) \
V(ShiftI) \
@ -1026,6 +1027,17 @@ class LPower: public LTemplateInstruction<1, 2, 0> {
};
class LRandom: public LTemplateInstruction<1, 1, 0> {
public:
explicit LRandom(LOperand* global_object) {
inputs_[0] = global_object;
}
DECLARE_CONCRETE_INSTRUCTION(Random, "random")
DECLARE_HYDROGEN_ACCESSOR(Random)
};
class LArithmeticD: public LTemplateInstruction<1, 2, 0> {
public:
LArithmeticD(Token::Value op, LOperand* left, LOperand* right)