Reviewers: Jakob,
Description:
Port Math.random change to MIPS.
BUG=
TEST=
Please review this at http://codereview.chromium.org/9107006/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files:
M src/mips/lithium-codegen-mips.cc
M src/mips/lithium-mips.h
M src/mips/lithium-mips.cc
Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc
b/src/mips/lithium-codegen-mips.cc
index
06e886c6bb1c9db5aca15deb9a53d43daee24941..7c94730f129a50bc863f27bf129e92f877d11762
100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -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,
Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index
90e1024ba9373afda64ae4c11d061384e77e44ce..b66b98f208ef3c72a0211f71539cf45b6dfd4e91
100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -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());
Index: src/mips/lithium-mips.h
diff --git a/src/mips/lithium-mips.h b/src/mips/lithium-mips.h
index
da59dd8b0c214b55e2bde7f21b054a43e7042e89..069a0251fda5c259180974ef6d96c2da449b662f
100644
--- a/src/mips/lithium-mips.h
+++ b/src/mips/lithium-mips.h
@@ -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)
--
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