[MIPS GlobalISel] Select fpext and fptrunc

Select G_FPEXT and G_FPTRUNC for MIPS32.

Differential Revision: https://reviews.llvm.org/D62902

llvm-svn: 362689
diff --git a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
index 4fb61ce..146ee754 100644
--- a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
@@ -104,6 +104,12 @@
   getActionDefinitionsBuilder({G_FCEIL, G_FFLOOR})
       .libcallFor({s32, s64});
 
+  getActionDefinitionsBuilder(G_FPEXT)
+      .legalFor({{s64, s32}});
+
+  getActionDefinitionsBuilder(G_FPTRUNC)
+      .legalFor({{s32, s64}});
+
   computeTables();
   verify(*ST.getInstrInfo());
 }