[turbofan] Add new Float32Abs and Float64Abs operators.

src/compiler/x64/code-generator-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/scopes.h"
@@ skipping 708 matching lines @@
       break;
     case kSSEFloat32Sub:
       ASSEMBLE_SSE_BINOP(subss);
       break;
     case kSSEFloat32Mul:
       ASSEMBLE_SSE_BINOP(mulss);
       break;
     case kSSEFloat32Div:
       ASSEMBLE_SSE_BINOP(divss);
       break;
+    case kSSEFloat32Abs: {
+      // TODO(bmeurer): Use RIP relative 128-bit constants.
+      // TODO(turbofan): Add AVX version with relaxed register constraints.
+      __ pcmpeqd(kScratchDoubleReg, kScratchDoubleReg);
+      __ psrlq(kScratchDoubleReg, 33);
+      __ andps(i.OutputDoubleRegister(), kScratchDoubleReg);
+      break;
+    }
     case kSSEFloat32Neg: {
       // TODO(bmeurer): Use RIP relative 128-bit constants.
       // TODO(turbofan): Add AVX version with relaxed register constraints.
       __ pcmpeqd(kScratchDoubleReg, kScratchDoubleReg);
       __ psllq(kScratchDoubleReg, 31);
       __ xorps(i.OutputDoubleRegister(), kScratchDoubleReg);
       break;
     }
     case kSSEFloat32Sqrt:
       ASSEMBLE_SSE_UNOP(sqrtss);
@@ skipping 53 matching lines @@
       __ movsd(i.OutputDoubleRegister(), Operand(rsp, 0));
       __ addq(rsp, Immediate(kDoubleSize));
       break;
     }
     case kSSEFloat64Max:
       ASSEMBLE_SSE_BINOP(maxsd);
       break;
     case kSSEFloat64Min:
       ASSEMBLE_SSE_BINOP(minsd);
       break;
+    case kSSEFloat64Abs: {
+      // TODO(bmeurer): Use RIP relative 128-bit constants.
+      // TODO(turbofan): Add AVX version with relaxed register constraints.
+      __ pcmpeqd(kScratchDoubleReg, kScratchDoubleReg);
+      __ psrlq(kScratchDoubleReg, 1);
+      __ andpd(i.OutputDoubleRegister(), kScratchDoubleReg);
+      break;
+    }
     case kSSEFloat64Neg: {
       // TODO(bmeurer): Use RIP relative 128-bit constants.
       // TODO(turbofan): Add AVX version with relaxed register constraints.
       __ pcmpeqd(kScratchDoubleReg, kScratchDoubleReg);
       __ psllq(kScratchDoubleReg, 63);
       __ xorpd(i.OutputDoubleRegister(), kScratchDoubleReg);
       break;
     }
     case kSSEFloat64Sqrt:
       ASSEMBLE_SSE_UNOP(sqrtsd);
@@ skipping 764 matching lines @@
     }
   }
   MarkLazyDeoptSite();
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8