Fixed some soft-float bugs for MIPS and ARM.

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 9fa5f798002bcdc7e949f925e87355e0b99d65b7..7e3d3d836e25193eaa8aeaefb49c6c9c194e26aa 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -4653,15 +4653,15 @@ void LCodeGen::DoDeferredNumberTagI(LInstruction* instr,
     } else {
       Label no_leading_zero, done;
       __ And(at, src, Operand(0x80000000));
-      __ Branch(&no_leading_zero, ne, at, Operand(zero_reg));
-
+      __ Branch(USE_DELAY_SLOT, &no_leading_zero, ne, at, Operand(zero_reg));
+      __ mov(sfpd_hi, src);
       // Integer has one leading zeros.
       GenerateUInt2Double(masm(), sfpd_hi, sfpd_lo, t0, 1);
       __ Branch(&done);
 
       __ bind(&no_leading_zero);
       GenerateUInt2Double(masm(), sfpd_hi, sfpd_lo, t0, 0);
-      __ Branch(&done);
+      __ bind(&done);
     }
   }