[turbofan] Introduce optional Float64Min and Float64Max machine operators.

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

Index: src/compiler/x64/code-generator-x64.cc
diff --git a/src/compiler/x64/code-generator-x64.cc b/src/compiler/x64/code-generator-x64.cc
index 9d946b8094291b1e2143f241d2fa9531189e309d..0027d49bec5a6f443568e4392ac761ca4c1bd6d3 100644
--- a/src/compiler/x64/code-generator-x64.cc
+++ b/src/compiler/x64/code-generator-x64.cc
@@ -741,6 +741,12 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
       __ addq(rsp, Immediate(kDoubleSize));
       break;
     }
+    case kSSEFloat64Max:
+      ASSEMBLE_DOUBLE_BINOP(maxsd);
+      break;
+    case kSSEFloat64Min:
+      ASSEMBLE_DOUBLE_BINOP(minsd);
+      break;
     case kSSEFloat64Sqrt:
       if (instr->InputAt(0)->IsDoubleRegister()) {
         __ sqrtsd(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
@@ -847,6 +853,12 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
     case kAVXFloat64Div:
       ASSEMBLE_AVX_DOUBLE_BINOP(vdivsd);
       break;
+    case kAVXFloat64Max:
+      ASSEMBLE_AVX_DOUBLE_BINOP(vmaxsd);
+      break;
+    case kAVXFloat64Min:
+      ASSEMBLE_AVX_DOUBLE_BINOP(vminsd);
+      break;
     case kX64Movsxbl:
       ASSEMBLE_MOVX(movsxbl);
       __ AssertZeroExtended(i.OutputRegister());