MIPS: Inlining Math.min and Math.max in crankshaft.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 796e61d6717e35825682ca705a8ad138742e61e9..010b8aa94196b63816124aa7c0a4024e8813d83d 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -3816,6 +3816,7 @@ void LCodeGen::DoSmiUntag(LSmiUntag* instr) {
 void LCodeGen::EmitNumberUntagD(Register input_reg,
                                 DoubleRegister result_reg,
                                 bool deoptimize_on_undefined,
+                                bool deoptimize_on_minus_zero,
                                 LEnvironment* env) {
   Register scratch = scratch0();
 
@@ -3845,6 +3846,12 @@ void LCodeGen::EmitNumberUntagD(Register input_reg,
   }
   // Heap number to double register conversion.
   __ ldc1(result_reg, FieldMemOperand(input_reg, HeapNumber::kValueOffset));
+  if (deoptimize_on_minus_zero) {
+    __ mfc1(at, result_reg.low());
+    __ Branch(&done, ne, at, Operand(zero_reg));
+    __ mfc1(scratch, result_reg.high());
+    DeoptimizeIf(eq, env, scratch, Operand(HeapNumber::kSignMask));
+  }
   __ Branch(&done);
 
   // Smi to double register conversion
@@ -3976,6 +3983,7 @@ void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) {
 
   EmitNumberUntagD(input_reg, result_reg,
                    instr->hydrogen()->deoptimize_on_undefined(),
+                   instr->hydrogen()->deoptimize_on_minus_zero(),
                    instr->environment());
 }