Index: src/mips/lithium-codegen-mips.cc |
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc |
index 6cb8859317176f584e34064d5cf203469c7570ec..af562624c0bd8226cc3da5230e7483003c3ca9bd 100644 |
--- a/src/mips/lithium-codegen-mips.cc |
+++ b/src/mips/lithium-codegen-mips.cc |
@@ -3873,68 +3873,6 @@ void LCodeGen::DoPower(LPower* instr) { |
} |
-void LCodeGen::DoRandom(LRandom* instr) { |
- // Assert that the register size is indeed the size of each seed. |
- static const int kSeedSize = sizeof(uint32_t); |
- STATIC_ASSERT(kPointerSize == kSeedSize); |
- |
- // Load native context. |
- Register global_object = ToRegister(instr->global_object()); |
- Register native_context = global_object; |
- __ lw(native_context, FieldMemOperand( |
- global_object, GlobalObject::kNativeContextOffset)); |
- |
- // Load state (FixedArray of the native context's random seeds). |
- static const int kRandomSeedOffset = |
- FixedArray::kHeaderSize + Context::RANDOM_SEED_INDEX * kPointerSize; |
- Register state = native_context; |
- __ lw(state, FieldMemOperand(native_context, kRandomSeedOffset)); |
- |
- // Load state[0]. |
- Register state0 = ToRegister(instr->scratch()); |
- __ lw(state0, FieldMemOperand(state, ByteArray::kHeaderSize)); |
- // Load state[1]. |
- Register state1 = ToRegister(instr->scratch2()); |
- __ lw(state1, FieldMemOperand(state, ByteArray::kHeaderSize + kSeedSize)); |
- |
- // state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16) |
- Register scratch3 = ToRegister(instr->scratch3()); |
- Register scratch4 = scratch0(); |
- __ And(scratch3, state0, Operand(0xFFFF)); |
- __ li(scratch4, Operand(18273)); |
- __ Mul(scratch3, scratch3, scratch4); |
- __ srl(state0, state0, 16); |
- __ Addu(state0, scratch3, state0); |
- // Save state[0]. |
- __ sw(state0, FieldMemOperand(state, ByteArray::kHeaderSize)); |
- |
- // state[1] = 36969 * (state[1] & 0xFFFF) + (state[1] >> 16) |
- __ And(scratch3, state1, Operand(0xFFFF)); |
- __ li(scratch4, Operand(36969)); |
- __ Mul(scratch3, scratch3, scratch4); |
- __ srl(state1, state1, 16), |
- __ Addu(state1, scratch3, state1); |
- // Save state[1]. |
- __ sw(state1, FieldMemOperand(state, ByteArray::kHeaderSize + kSeedSize)); |
- |
- // Random bit pattern = (state[0] << 14) + (state[1] & 0x3FFFF) |
- Register random = scratch4; |
- __ And(random, state1, Operand(0x3FFFF)); |
- __ sll(state0, state0, 14); |
- __ Addu(random, random, state0); |
- |
- // 0x41300000 is the top half of 1.0 x 2^20 as a double. |
- __ li(scratch3, Operand(0x41300000)); |
- // Move 0x41300000xxxxxxxx (x = random bits in v0) to FPU. |
- DoubleRegister result = ToDoubleRegister(instr->result()); |
- __ Move(result, random, scratch3); |
- // Move 0x4130000000000000 to FPU. |
- DoubleRegister scratch5 = double_scratch0(); |
- __ Move(scratch5, zero_reg, scratch3); |
- __ sub_d(result, result, scratch5); |
-} |
- |
- |
void LCodeGen::DoMathExp(LMathExp* instr) { |
DoubleRegister input = ToDoubleRegister(instr->value()); |
DoubleRegister result = ToDoubleRegister(instr->result()); |