Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(196)

Side by Side Diff: src/ia32/full-codegen-ia32.cc

Issue 82763005: Reland "Implement Math.random() purely in JavaScript" plus fixes. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Added assertion Created 7 years, 1 month ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch | Annotate | Revision Log
« no previous file with comments | « src/hydrogen-instructions.h ('k') | src/ia32/lithium-codegen-ia32.cc » ('j') | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
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
(...skipping 3278 matching lines...) Expand 10 before | Expand all | Expand 10 after
3289 VisitForStackValue(args->at(1)); 3289 VisitForStackValue(args->at(1));
3290 VisitForStackValue(args->at(2)); 3290 VisitForStackValue(args->at(2));
3291 __ CallRuntime(Runtime::kLog, 2); 3291 __ CallRuntime(Runtime::kLog, 2);
3292 } 3292 }
3293 // Finally, we're expected to leave a value on the top of the stack. 3293 // Finally, we're expected to leave a value on the top of the stack.
3294 __ mov(eax, isolate()->factory()->undefined_value()); 3294 __ mov(eax, isolate()->factory()->undefined_value());
3295 context()->Plug(eax); 3295 context()->Plug(eax);
3296 } 3296 }
3297 3297
3298 3298
3299 void FullCodeGenerator::EmitRandomHeapNumber(CallRuntime* expr) {
3300 ASSERT(expr->arguments()->length() == 0);
3301
3302 Label slow_allocate_heapnumber;
3303 Label heapnumber_allocated;
3304
3305 __ AllocateHeapNumber(edi, ebx, ecx, &slow_allocate_heapnumber);
3306 __ jmp(&heapnumber_allocated);
3307
3308 __ bind(&slow_allocate_heapnumber);
3309 // Allocate a heap number.
3310 __ CallRuntime(Runtime::kNumberAlloc, 0);
3311 __ mov(edi, eax);
3312
3313 __ bind(&heapnumber_allocated);
3314
3315 __ PrepareCallCFunction(1, ebx);
3316 __ mov(eax, ContextOperand(context_register(), Context::GLOBAL_OBJECT_INDEX));
3317 __ mov(eax, FieldOperand(eax, GlobalObject::kNativeContextOffset));
3318 __ mov(Operand(esp, 0), eax);
3319 __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1);
3320
3321 // Convert 32 random bits in eax to 0.(32 random bits) in a double
3322 // by computing:
3323 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)).
3324 // This is implemented on both SSE2 and FPU.
3325 if (CpuFeatures::IsSupported(SSE2)) {
3326 CpuFeatureScope fscope(masm(), SSE2);
3327 __ mov(ebx, Immediate(0x49800000)); // 1.0 x 2^20 as single.
3328 __ movd(xmm1, ebx);
3329 __ movd(xmm0, eax);
3330 __ cvtss2sd(xmm1, xmm1);
3331 __ xorps(xmm0, xmm1);
3332 __ subsd(xmm0, xmm1);
3333 __ movsd(FieldOperand(edi, HeapNumber::kValueOffset), xmm0);
3334 } else {
3335 // 0x4130000000000000 is 1.0 x 2^20 as a double.
3336 __ mov(FieldOperand(edi, HeapNumber::kExponentOffset),
3337 Immediate(0x41300000));
3338 __ mov(FieldOperand(edi, HeapNumber::kMantissaOffset), eax);
3339 __ fld_d(FieldOperand(edi, HeapNumber::kValueOffset));
3340 __ mov(FieldOperand(edi, HeapNumber::kMantissaOffset), Immediate(0));
3341 __ fld_d(FieldOperand(edi, HeapNumber::kValueOffset));
3342 __ fsubp(1);
3343 __ fstp_d(FieldOperand(edi, HeapNumber::kValueOffset));
3344 }
3345 __ mov(eax, edi);
3346 context()->Plug(eax);
3347 }
3348
3349
3350 void FullCodeGenerator::EmitSubString(CallRuntime* expr) { 3299 void FullCodeGenerator::EmitSubString(CallRuntime* expr) {
3351 // Load the arguments on the stack and call the stub. 3300 // Load the arguments on the stack and call the stub.
3352 SubStringStub stub; 3301 SubStringStub stub;
3353 ZoneList<Expression*>* args = expr->arguments(); 3302 ZoneList<Expression*>* args = expr->arguments();
3354 ASSERT(args->length() == 3); 3303 ASSERT(args->length() == 3);
3355 VisitForStackValue(args->at(0)); 3304 VisitForStackValue(args->at(0));
3356 VisitForStackValue(args->at(1)); 3305 VisitForStackValue(args->at(1));
3357 VisitForStackValue(args->at(2)); 3306 VisitForStackValue(args->at(2));
3358 __ CallStub(&stub); 3307 __ CallStub(&stub);
3359 context()->Plug(eax); 3308 context()->Plug(eax);
(...skipping 1594 matching lines...) Expand 10 before | Expand all | Expand 10 after
4954 4903
4955 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), 4904 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
4956 Assembler::target_address_at(call_target_address)); 4905 Assembler::target_address_at(call_target_address));
4957 return OSR_AFTER_STACK_CHECK; 4906 return OSR_AFTER_STACK_CHECK;
4958 } 4907 }
4959 4908
4960 4909
4961 } } // namespace v8::internal 4910 } } // namespace v8::internal
4962 4911
4963 #endif // V8_TARGET_ARCH_IA32 4912 #endif // V8_TARGET_ARCH_IA32
OLDNEW
« no previous file with comments | « src/hydrogen-instructions.h ('k') | src/ia32/lithium-codegen-ia32.cc » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698