PPC: Remove unnecessary frsp before stfs in codegen

src/compiler/ppc/code-generator-ppc.cc

Index: src/compiler/ppc/code-generator-ppc.cc
diff --git a/src/compiler/ppc/code-generator-ppc.cc b/src/compiler/ppc/code-generator-ppc.cc
index e62e725c4dfdc5a31445c8cd065dc911d455ca76..e3fddd0dbc5a1da0ab5da8597625ee4a53d348b6 100644
--- a/src/compiler/ppc/code-generator-ppc.cc
+++ b/src/compiler/ppc/code-generator-ppc.cc
@@ -587,11 +587,12 @@ Condition FlagsConditionToCondition(FlagsCondition condition, ArchOpcode op) {
     AddressingMode mode = kMode_None;                    \
     MemOperand operand = i.MemoryOperand(&mode, &index); \
     DoubleRegister value = i.InputDoubleRegister(index); \
-    __ frsp(kScratchDoubleReg, value);                   \
+    /* removed frsp as instruction-selector checked */   \
+    /* value to be kFloat32 */                           \
     if (mode == kMode_MRI) {                             \
-      __ stfs(kScratchDoubleReg, operand);               \
+      __ stfs(value, operand);                           \
     } else {                                             \
-      __ stfsx(kScratchDoubleReg, operand);              \
+      __ stfsx(value, operand);                          \
     }                                                    \
     DCHECK_EQ(LeaveRC, i.OutputRCBit());                 \
   } while (0)
@@ -699,11 +700,13 @@ Condition FlagsConditionToCondition(FlagsCondition condition, ArchOpcode op) {
     __ bge(&done);                                      \
     DoubleRegister value = i.InputDoubleRegister(3);    \
     __ frsp(kScratchDoubleReg, value);                  \
+    /* removed frsp as instruction-selector checked */  \
+    /* value to be kFloat32 */                          \
     if (mode == kMode_MRI) {                            \
-      __ stfs(kScratchDoubleReg, operand);              \
+      __ stfs(value, operand);                          \
     } else {                                            \
       CleanUInt32(offset);                              \
-      __ stfsx(kScratchDoubleReg, operand);             \
+      __ stfsx(value, operand);                         \
     }                                                   \
     __ bind(&done);                                     \
     DCHECK_EQ(LeaveRC, i.OutputRCBit());                \