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Issue 11415192: MIPS: Faster implementation of Math.exp() (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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3499 __ sub_d(f0, f12, f14); 3499 __ sub_d(f0, f12, f14);
3500 } 3500 }
3501 3501
3502 void LCodeGen::DoDeferredRandom(LRandom* instr) { 3502 void LCodeGen::DoDeferredRandom(LRandom* instr) {
3503 __ PrepareCallCFunction(1, scratch0()); 3503 __ PrepareCallCFunction(1, scratch0());
3504 __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); 3504 __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1);
3505 // Return value is in v0. 3505 // Return value is in v0.
3506 } 3506 }
3507 3507
3508 3508
3509 void LCodeGen::DoMathExp(LMathExp* instr) {
3510 DoubleRegister input = ToDoubleRegister(instr->value());
3511 DoubleRegister result = ToDoubleRegister(instr->result());
3512 DoubleRegister double_scratch1 = ToDoubleRegister(instr->double_temp());
3513 DoubleRegister double_scratch2 = double_scratch0();
3514 Register temp1 = ToRegister(instr->temp1());
3515 Register temp2 = ToRegister(instr->temp2());
3516
3517 MathExpGenerator::EmitMathExp(
3518 masm(), input, result, double_scratch1, double_scratch2,
3519 temp1, temp2, scratch0());
3520 }
3521
3522
3509 void LCodeGen::DoMathLog(LUnaryMathOperation* instr) { 3523 void LCodeGen::DoMathLog(LUnaryMathOperation* instr) {
3510 ASSERT(ToDoubleRegister(instr->result()).is(f4)); 3524 ASSERT(ToDoubleRegister(instr->result()).is(f4));
3511 TranscendentalCacheStub stub(TranscendentalCache::LOG, 3525 TranscendentalCacheStub stub(TranscendentalCache::LOG,
3512 TranscendentalCacheStub::UNTAGGED); 3526 TranscendentalCacheStub::UNTAGGED);
3513 CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); 3527 CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
3514 } 3528 }
3515 3529
3516 3530
3517 void LCodeGen::DoMathTan(LUnaryMathOperation* instr) { 3531 void LCodeGen::DoMathTan(LUnaryMathOperation* instr) {
3518 ASSERT(ToDoubleRegister(instr->result()).is(f4)); 3532 ASSERT(ToDoubleRegister(instr->result()).is(f4));
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5501 __ Subu(scratch, result, scratch); 5515 __ Subu(scratch, result, scratch);
5502 __ lw(result, FieldMemOperand(scratch, 5516 __ lw(result, FieldMemOperand(scratch,
5503 FixedArray::kHeaderSize - kPointerSize)); 5517 FixedArray::kHeaderSize - kPointerSize));
5504 __ bind(&done); 5518 __ bind(&done);
5505 } 5519 }
5506 5520
5507 5521
5508 #undef __ 5522 #undef __
5509 5523
5510 } } // namespace v8::internal 5524 } } // namespace v8::internal
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