8287288: Fix some typos in C1

Reviewed-by: aph, dholmes, dlong, chagedorn

Author: Zhuojun Miao

src/hotspot/cpu/aarch64/c1_LIRAssembler_aarch64.cpp

@@ -965,7 +965,7 @@ void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_Patch
       if (UseCompressedOops && !wide) {
         __ ldrw(dest->as_register(), as_Address(from_addr));
       } else {
-         __ ldr(dest->as_register(), as_Address(from_addr));
+        __ ldr(dest->as_register(), as_Address(from_addr));
       }
       break;
     case T_METADATA:

src/hotspot/cpu/aarch64/c1_LIRGenerator_aarch64.cpp

@@ -917,7 +917,6 @@ void LIRGenerator::do_update_CRC32(Intrinsic* x) {
   assert(UseCRC32Intrinsics, "why are we here?");
   // Make all state_for calls early since they can emit code
   LIR_Opr result = rlock_result(x);
-  int flags = 0;
   switch (x->id()) {
     case vmIntrinsics::_updateCRC32: {
       LIRItem crc(x->argument_at(0), this);
@@ -942,9 +941,9 @@ void LIRGenerator::do_update_CRC32(Intrinsic* x) {
 
       LIR_Opr index = off.result();
       int offset = is_updateBytes ? arrayOopDesc::base_offset_in_bytes(T_BYTE) : 0;
-      if(off.result()->is_constant()) {
+      if (off.result()->is_constant()) {
         index = LIR_OprFact::illegalOpr;
-       offset += off.result()->as_jint();
+        offset += off.result()->as_jint();
       }
       LIR_Opr base_op = buf.result();
 
@@ -994,7 +993,6 @@ void LIRGenerator::do_update_CRC32C(Intrinsic* x) {
   assert(UseCRC32CIntrinsics, "why are we here?");
   // Make all state_for calls early since they can emit code
   LIR_Opr result = rlock_result(x);
-  int flags = 0;
   switch (x->id()) {
     case vmIntrinsics::_updateBytesCRC32C:
     case vmIntrinsics::_updateDirectByteBufferCRC32C: {

src/hotspot/cpu/aarch64/templateInterpreterGenerator_aarch64.cpp

@@ -466,8 +466,8 @@ address TemplateInterpreterGenerator::generate_return_entry_for(TosState state,
   __ sub(rscratch1, rscratch2, rscratch1, ext::uxtw, 3);
   __ andr(sp, rscratch1, -16);
 
- __ check_and_handle_popframe(rthread);
- __ check_and_handle_earlyret(rthread);
+  __ check_and_handle_popframe(rthread);
+  __ check_and_handle_earlyret(rthread);
 
   __ get_dispatch();
   __ dispatch_next(state, step);

src/hotspot/share/c1/c1_LIR.hpp

@@ -198,14 +198,14 @@ class LIR_Const: public LIR_OprPtr {
 class LIR_Opr {
  public:
   // value structure:
-  //     data       opr-type opr-kind
-  // +--------------+-------+-------+
-  // [max...........|7 6 5 4|3 2 1 0]
-  //                               ^
-  //                         is_pointer bit
+  //          data        other-non-data opr-type opr-kind
+  // +-------------------+--------------+-------+-----+
+  // [max...............................|6 5 4 3|2 1 0]
+  //                                                 ^
+  //                                           is_pointer bit
   //
   // lowest bit cleared, means it is a structure pointer
-  // we need  4 bits to represent types
+  // we need 4 bits to represent types
 
  private:
   friend class LIR_OprFact;

src/hotspot/share/c1/c1_LIRGenerator.cpp

@@ -1187,7 +1187,7 @@ void LIRGenerator::do_Return(Return* x) {
   set_no_result(x);
 }
 
-// Examble: ref.get()
+// Example: ref.get()
 // Combination of LoadField and g1 pre-write barrier
 void LIRGenerator::do_Reference_get(Intrinsic* x) {
 
@@ -1198,7 +1198,7 @@ void LIRGenerator::do_Reference_get(Intrinsic* x) {
   LIRItem reference(x->argument_at(0), this);
   reference.load_item();
 
-  // need to perform the null check on the reference objecy
+  // need to perform the null check on the reference object
   CodeEmitInfo* info = NULL;
   if (x->needs_null_check()) {
     info = state_for(x);

src/hotspot/share/c1/c1_LIRGenerator.hpp

@@ -649,7 +649,6 @@ class LIRItem: public CompilationResourceObj {
     } else {
       return _result;
     }
-    return _result;
   }
 
   void set_result(LIR_Opr opr);