[MIPS GlobalISel] Select fcmp

Select floating point compare for MIPS32.

Differential Revision: https://reviews.llvm.org/D62721

llvm-svn: 362603
diff --git a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
index fcad2a9..cabaed8 100644
--- a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
@@ -97,6 +97,10 @@
   getActionDefinitionsBuilder({G_FADD, G_FSUB, G_FMUL, G_FDIV})
       .legalFor({s32, s64});
 
+  getActionDefinitionsBuilder(G_FCMP)
+      .legalFor({{s32, s32}, {s32, s64}})
+      .minScalar(0, s32);
+
   computeTables();
   verify(*ST.getInstrInfo());
 }