MIPS: Fix DCHECK failure in simulator for fp32 mode.

src/mips/simulator-mips.cc

Index: src/mips/simulator-mips.cc
diff --git a/src/mips/simulator-mips.cc b/src/mips/simulator-mips.cc
index d40fac7cb0541b8bf8c0d0ea6b1ed9fcfd331210..2478539d1e96e185fb852fe5655609da71861622 100644
--- a/src/mips/simulator-mips.cc
+++ b/src/mips/simulator-mips.cc
@@ -2290,7 +2290,7 @@ void Simulator::DecodeTypeRegister(Instruction* instr) {
                 }
                 set_fpu_register_word(fd_reg, result);
                 if (set_fcsr_round_error(fs, rounded)) {
-                  set_fpu_register(fd_reg, kFPUInvalidResult);
+                  set_fpu_register_word(fd_reg, kFPUInvalidResult);
                 }
               }
               break;
@@ -2300,7 +2300,7 @@ void Simulator::DecodeTypeRegister(Instruction* instr) {
                 int32_t result = static_cast<int32_t>(rounded);
                 set_fpu_register_word(fd_reg, result);
                 if (set_fcsr_round_error(fs, rounded)) {
-                  set_fpu_register(fd_reg, kFPUInvalidResult);
+                  set_fpu_register_word(fd_reg, kFPUInvalidResult);
                 }
               }
               break;
@@ -2310,7 +2310,7 @@ void Simulator::DecodeTypeRegister(Instruction* instr) {
                 int32_t result = static_cast<int32_t>(rounded);
                 set_fpu_register_word(fd_reg, result);
                 if (set_fcsr_round_error(fs, rounded)) {
-                  set_fpu_register(fd_reg, kFPUInvalidResult);
+                  set_fpu_register_word(fd_reg, kFPUInvalidResult);
                 }
               }
               break;
@@ -2320,7 +2320,7 @@ void Simulator::DecodeTypeRegister(Instruction* instr) {
                 int32_t result = static_cast<int32_t>(rounded);
                 set_fpu_register_word(fd_reg, result);
                 if (set_fcsr_round_error(fs, rounded)) {
-                  set_fpu_register(fd_reg, kFPUInvalidResult);
+                  set_fpu_register_word(fd_reg, kFPUInvalidResult);
                 }
               }
               break;