Revision: 10386
Author: [email protected]
Date: Wed Jan 11 04:19:11 2012
Log: Port Math.random change to MIPS.
BUG=
TEST=
Review URL: http://codereview.chromium.org/9107006
http://code.google.com/p/v8/source/detail?r=10386
Modified:
/branches/bleeding_edge/src/mips/lithium-codegen-mips.cc
/branches/bleeding_edge/src/mips/lithium-mips.cc
/branches/bleeding_edge/src/mips/lithium-mips.h
=======================================
--- /branches/bleeding_edge/src/mips/lithium-codegen-mips.cc Thu Jan 5
01:26:15 2012
+++ /branches/bleeding_edge/src/mips/lithium-codegen-mips.cc Wed Jan 11
04:19:11 2012
@@ -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:
@@ -3093,6 +3093,27 @@
__ CallStub(&stub);
}
}
+
+
+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) {
=======================================
--- /branches/bleeding_edge/src/mips/lithium-mips.cc Tue Jan 10 08:06:32
2012
+++ /branches/bleeding_edge/src/mips/lithium-mips.cc Wed Jan 11 04:19:11
2012
@@ -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:
@@ -1426,6 +1426,15 @@
instr,
CAN_DEOPTIMIZE_EAGERLY);
}
+
+
+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) {
=======================================
--- /branches/bleeding_edge/src/mips/lithium-mips.h Tue Dec 20 04:36:36 2011
+++ /branches/bleeding_edge/src/mips/lithium-mips.h Wed Jan 11 04:19:11 2012
@@ -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 @@
V(Parameter) \
V(Power) \
V(PushArgument) \
+ V(Random) \
V(RegExpLiteral) \
V(Return) \
V(ShiftI) \
@@ -1026,6 +1027,17 @@
};
+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)
--
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