[turbofan] Add backend support for float32 operations.

src/compiler/x64/instruction-codes-x64.h

Index: src/compiler/x64/instruction-codes-x64.h
diff --git a/src/compiler/x64/instruction-codes-x64.h b/src/compiler/x64/instruction-codes-x64.h
index 9416017af8ebb5856c3f1375f57e96a4fae5806a..2feafd27e5928c2bec6de475b04410599135fd68 100644
--- a/src/compiler/x64/instruction-codes-x64.h
+++ b/src/compiler/x64/instruction-codes-x64.h
@@ -47,6 +47,15 @@ namespace compiler {
   V(X64Ror)                        \
   V(X64Ror32)                      \
   V(X64Lzcnt32)                    \
+  V(SSEFloat32Cmp)                 \
+  V(SSEFloat32Add)                 \
+  V(SSEFloat32Sub)                 \
+  V(SSEFloat32Mul)                 \
+  V(SSEFloat32Div)                 \
+  V(SSEFloat32Sqrt)                \
+  V(SSEFloat32Max)                 \
+  V(SSEFloat32Min)                 \
+  V(SSEFloat32ToFloat64)           \
   V(SSEFloat64Cmp)                 \
   V(SSEFloat64Add)                 \
   V(SSEFloat64Sub)                 \
@@ -57,8 +66,7 @@ namespace compiler {
   V(SSEFloat64Round)               \
   V(SSEFloat64Max)                 \
   V(SSEFloat64Min)                 \
-  V(SSECvtss2sd)                   \
-  V(SSECvtsd2ss)                   \
+  V(SSEFloat64ToFloat32)           \
   V(SSEFloat64ToInt32)             \
   V(SSEFloat64ToUint32)            \
   V(SSEInt32ToFloat64)             \
@@ -68,6 +76,14 @@ namespace compiler {
   V(SSEFloat64InsertLowWord32)     \
   V(SSEFloat64InsertHighWord32)    \
   V(SSEFloat64LoadLowWord32)       \
+  V(AVXFloat32Cmp)                 \
+  V(AVXFloat32Add)                 \
+  V(AVXFloat32Sub)                 \
+  V(AVXFloat32Mul)                 \
+  V(AVXFloat32Div)                 \
+  V(AVXFloat32Max)                 \
+  V(AVXFloat32Min)                 \
+  V(AVXFloat64Cmp)                 \
   V(AVXFloat64Add)                 \
   V(AVXFloat64Sub)                 \
   V(AVXFloat64Mul)                 \