Subzero, MIPS32: Floating point load/store and format conversion instructions

src/IceTargetLoweringMIPS32.cpp

Index: src/IceTargetLoweringMIPS32.cpp
diff --git a/src/IceTargetLoweringMIPS32.cpp b/src/IceTargetLoweringMIPS32.cpp
index 7fcac0fef4a3835c6047f27f8f8d28090c32ae9f..926b4f2398a4fdf589bf6c717e1f471842c3b0c5 100644
--- a/src/IceTargetLoweringMIPS32.cpp
+++ b/src/IceTargetLoweringMIPS32.cpp
@@ -1120,9 +1120,11 @@ void TargetMIPS32::lowerCast(const InstCast *Instr) {
     break;
   }
   case InstCast::Fptrunc:
+    // Use _cvt_d_s
     UnimplementedLoweringError(this, Instr);
     break;
   case InstCast::Fpext: {
+    // Use _cvt_s_d
     UnimplementedLoweringError(this, Instr);
     break;
   }