Improve LSRA and other dump output (dotnet#71499)

E.g.,

Update LSRA "Allocating Registers" table description.

Dump nodes added during resolution, e.g.:
```
   BB29 bottom (BB08->BB08): move V25 from STK to rdi (Critical)
N001 (  1,  1) [001174] ----------z                 t1174 =    LCL_VAR   int    V25 cse4          rdi REG rdi
```

Dump more data in the LSRA block sequence data:
```
-BB03( 16   )
-BB04(  4   )
+BB03 ( 16   ) critical-in critical-out
+BB04 (  4   ) critical-out
```

When dumping various flow bitvectors, annotate the bitvectors better:
```
-BB25 in gen out
-0000000000000000
-0000000000000003 CSE #1.c
-0000000000000003 CSE #1.c
+BB25
+ in: 0000000000000000
+gen: 0000000000000003 CSE #1.c
+out: 0000000000000003 CSE #1.c
```

Dump hoisting bitvectors using the sorting number:
```
-  USEDEF  (5)={V04 V00 V01 V02 V03}
+  USEDEF  (5)={V00 V01 V02 V03 V04}
```

Also, fix various typos and formatting.

Author: BruceForstall

src/coreclr/jit/compiler.cpp

@@ -4706,6 +4706,7 @@ void Compiler::compCompile(void** methodCodePtr, uint32_t* methodCodeSize, JitFl
     // Figure out what locals are address-taken.
     //
     DoPhase(this, PHASE_STR_ADRLCL, &Compiler::fgMarkAddressExposedLocals);
+
     // Run a simple forward substitution pass.
     //
     DoPhase(this, PHASE_FWD_SUB, &Compiler::fgForwardSub);

src/coreclr/jit/flowgraph.cpp

@@ -1894,7 +1894,7 @@ GenTree* Compiler::fgCreateMonitorTree(unsigned lvaMonAcquired, unsigned lvaThis
         {
             // have to insert this immediately before the GT_RETURN so we transform:
             // ret(...) ->
-            // ret(comma(comma(tmp=...,call mon_exit), tmp)
+            // ret(comma(comma(tmp=...,call mon_exit), tmp))
             //
             //
             // Before morph stage, it is possible to have a case of GT_RETURN(TYP_LONG, op1) where op1's type is

src/coreclr/jit/gentree.h

@@ -1233,7 +1233,7 @@ struct GenTree
         return (gtOper == GT_LCL_FLD || gtOper == GT_LCL_FLD_ADDR || gtOper == GT_STORE_LCL_FLD);
     }
 
-    inline bool OperIsLocalField() const
+    bool OperIsLocalField() const
     {
         return OperIsLocalField(gtOper);
     }
@@ -8673,13 +8673,13 @@ inline GenTree* GenTree::gtEffectiveVal(bool commaOnly /* = false */)
 }
 
 //-------------------------------------------------------------------------
-// gtCommaAssignVal - find value being assigned to a comma wrapped assigment
+// gtCommaAssignVal - find value being assigned to a comma wrapped assignment
 //
 // Returns:
 //    tree representing value being assigned if this tree represents a
 //    comma-wrapped local definition and use.
 //
-//    original tree, of not.
+//    original tree, if not.
 //
 inline GenTree* GenTree::gtCommaAssignVal()
 {

src/coreclr/jit/importer.cpp

@@ -3188,7 +3188,7 @@ GenTree* Compiler::impInitializeArrayIntrinsic(CORINFO_SIG_INFO* sig)
     GenTree* arrayLocalNode = impStackTop(1).val;
 
     //
-    // Verify that the field token is known and valid.  Note that It's also
+    // Verify that the field token is known and valid.  Note that it's also
     // possible for the token to come from reflection, in which case we cannot do
     // the optimization and must therefore revert to calling the helper.  You can
     // see an example of this in bvt\DynIL\initarray2.exe (in Main).
@@ -8108,7 +8108,7 @@ void Compiler::impImportAndPushBox(CORINFO_RESOLVED_TOKEN* pResolvedToken)
 }
 
 //------------------------------------------------------------------------
-// impImportNewObjArray: Build and import `new` of multi-dimmensional array
+// impImportNewObjArray: Build and import `new` of multi-dimensional array
 //
 // Arguments:
 //    pResolvedToken - The CORINFO_RESOLVED_TOKEN that has been initialized
@@ -8123,7 +8123,7 @@ void Compiler::impImportAndPushBox(CORINFO_RESOLVED_TOKEN* pResolvedToken)
 // Notes:
 //    Multi-dimensional array constructors are imported as calls to a JIT
 //    helper, not as regular calls.
-
+//
 void Compiler::impImportNewObjArray(CORINFO_RESOLVED_TOKEN* pResolvedToken, CORINFO_CALL_INFO* pCallInfo)
 {
     GenTree* classHandle = impParentClassTokenToHandle(pResolvedToken);
@@ -8160,7 +8160,7 @@ void Compiler::impImportNewObjArray(CORINFO_RESOLVED_TOKEN* pResolvedToken, CORI
     // The arguments of the CORINFO_HELP_NEW_MDARR helper are:
     //  - Array class handle
     //  - Number of dimension arguments
-    //  - Pointer to block of int32 dimensions - address  of lvaNewObjArrayArgs temp.
+    //  - Pointer to block of int32 dimensions: address of lvaNewObjArrayArgs temp.
     //
 
     node = gtNewLclvNode(lvaNewObjArrayArgs, TYP_BLK);
@@ -13695,15 +13695,15 @@ void Compiler::impImportBlockCode(BasicBlock* block)
                     {
                         lclTyp = JITtype2varType(cit);
                     }
-                    goto ARR_LD_POST_VERIFY;
+                    goto ARR_LD;
                 }
 
                 // Similarly, if its a readonly access, we can do a simple address-of
                 // without doing a runtime type-check
                 if (prefixFlags & PREFIX_READONLY)
                 {
                     lclTyp = TYP_REF;
-                    goto ARR_LD_POST_VERIFY;
+                    goto ARR_LD;
                 }
 
                 // Otherwise we need the full helper function with run-time type check
@@ -13747,7 +13747,7 @@ void Compiler::impImportBlockCode(BasicBlock* block)
                     tiRetVal           = verMakeTypeInfo(ldelemClsHnd); // precise type always needed for struct
                     tiRetVal.NormaliseForStack();
                 }
-                goto ARR_LD_POST_VERIFY;
+                goto ARR_LD;
 
             case CEE_LDELEM_I1:
                 lclTyp = TYP_BYTE;
@@ -13784,7 +13784,6 @@ void Compiler::impImportBlockCode(BasicBlock* block)
                 goto ARR_LD;
 
             ARR_LD:
-            ARR_LD_POST_VERIFY:
 
                 op2 = impPopStack().val; // index
                 op1 = impPopStack().val; // array
@@ -15345,14 +15344,14 @@ void Compiler::impImportBlockCode(BasicBlock* block)
                 // Insert the security callout before any actual code is generated
                 impHandleAccessAllowed(callInfo.accessAllowed, &callInfo.callsiteCalloutHelper);
 
-                // There are three different cases for new
-                // Object size is variable (depends on arguments)
+                // There are three different cases for new.
+                // Object size is variable (depends on arguments).
                 //      1) Object is an array (arrays treated specially by the EE)
                 //      2) Object is some other variable sized object (e.g. String)
                 //      3) Class Size can be determined beforehand (normal case)
-                // In the first case, we need to call a NEWOBJ helper (multinewarray)
-                // in the second case we call the constructor with a '0' this pointer
-                // In the third case we alloc the memory, then call the constuctor
+                // In the first case, we need to call a NEWOBJ helper (multinewarray).
+                // In the second case we call the constructor with a '0' this pointer.
+                // In the third case we alloc the memory, then call the constuctor.
 
                 clsFlags = callInfo.classFlags;
                 if (clsFlags & CORINFO_FLG_ARRAY)

src/coreclr/jit/lower.cpp

@@ -259,6 +259,7 @@ GenTree* Lowering::LowerNode(GenTree* node)
             ContainCheckBoundsChk(node->AsBoundsChk());
             break;
 #endif // TARGET_XARCH
+
         case GT_ARR_ELEM:
             return LowerArrElem(node);