[turbofan] Add Float32(Max|Min) 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 970f85d8d3dcc40cf63327d64c30ce0b816bb151..5e1ef6ba1a6994d3bd4ef1396a7f8712ad19492a 100644
--- a/src/compiler/x64/code-generator-x64.cc
+++ b/src/compiler/x64/code-generator-x64.cc
@@ -1297,6 +1297,61 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
                                                        -kDoubleSize);
       break;
     }
+    case kSSEFloat32Max: {
+      Label compare_nan, compare_swap, done_compare;
+      if (instr->InputAt(1)->IsFPRegister()) {
+        __ Ucomiss(i.InputDoubleRegister(0), i.InputDoubleRegister(1));
+      } else {
+        __ Ucomiss(i.InputDoubleRegister(0), i.InputOperand(1));
+      }
+      auto ool =
+          new (zone()) OutOfLineLoadFloat32NaN(this, i.OutputDoubleRegister());
+      __ j(parity_even, ool->entry());
+      __ j(above, &done_compare, Label::kNear);
+      __ j(below, &compare_swap, Label::kNear);
+      __ Movmskps(kScratchRegister, i.InputDoubleRegister(0));
+      __ testl(kScratchRegister, Immediate(1));
+      __ j(zero, &done_compare, Label::kNear);
+      __ bind(&compare_swap);
+      if (instr->InputAt(1)->IsFPRegister()) {
+        __ Movss(i.InputDoubleRegister(0), i.InputDoubleRegister(1));
+      } else {
+        __ Movss(i.InputDoubleRegister(0), i.InputOperand(1));
+      }
+      __ bind(&done_compare);
+      __ bind(ool->exit());
+      break;
+    }
+    case kSSEFloat32Min: {
+      Label compare_swap, done_compare;
+      if (instr->InputAt(1)->IsFPRegister()) {
+        __ Ucomiss(i.InputDoubleRegister(0), i.InputDoubleRegister(1));
+      } else {
+        __ Ucomiss(i.InputDoubleRegister(0), i.InputOperand(1));
+      }
+      auto ool =
+          new (zone()) OutOfLineLoadFloat32NaN(this, i.OutputDoubleRegister());
+      __ j(parity_even, ool->entry());
+      __ j(below, &done_compare, Label::kNear);
+      __ j(above, &compare_swap, Label::kNear);
+      if (instr->InputAt(1)->IsFPRegister()) {
+        __ Movmskps(kScratchRegister, i.InputDoubleRegister(1));
+      } else {
+        __ Movss(kScratchDoubleReg, i.InputOperand(1));
+        __ Movmskps(kScratchRegister, kScratchDoubleReg);
+      }
+      __ testl(kScratchRegister, Immediate(1));
+      __ j(zero, &done_compare, Label::kNear);
+      __ bind(&compare_swap);
+      if (instr->InputAt(1)->IsFPRegister()) {
+        __ Movss(i.InputDoubleRegister(0), i.InputDoubleRegister(1));
+      } else {
+        __ Movss(i.InputDoubleRegister(0), i.InputOperand(1));
+      }
+      __ bind(&done_compare);
+      __ bind(ool->exit());
+      break;
+    }
     case kSSEFloat64Max: {
       Label compare_nan, compare_swap, done_compare;
       if (instr->InputAt(1)->IsFPRegister()) {