Delete regArgList

Unused.

src/coreclr/jit/CMakeLists.txt

@@ -228,7 +228,6 @@ if (CLR_CMAKE_TARGET_WIN32)
     regalloc.h
     register_arg_convention.h
     register.h
-    reglist.h
     regset.h
     sideeffects.h
     simd.h

src/coreclr/jit/compiler.h

@@ -41,7 +41,6 @@ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
 #include "jitexpandarray.h"
 #include "tinyarray.h"
 #include "valuenum.h"
-#include "reglist.h"
 #include "jittelemetry.h"
 #include "namedintrinsiclist.h"
 #ifdef LATE_DISASM

src/coreclr/jit/gentree.cpp

@@ -8235,11 +8235,6 @@ GenTreeCall* Compiler::gtCloneExprCallHelper(GenTreeCall* tree,
         argsTail  = &((*argsTail)->NextRef());
     }
 
-#if !FEATURE_FIXED_OUT_ARGS
-    copy->regArgList      = tree->regArgList;
-    copy->regArgListCount = tree->regArgListCount;
-#endif
-
     // The call sig comes from the EE and doesn't change throughout the compilation process, meaning
     // we only really need one physical copy of it. Therefore a shallow pointer copy will suffice.
     // (Note that this still holds even if the tree we are cloning was created by an inlinee compiler,
@@ -8757,28 +8752,6 @@ GenTree* Compiler::gtGetThisArg(GenTreeCall* call)
     // Assert if we used DEBUG_DESTROY_NODE.
     assert(result->gtOper != GT_COUNT);
 
-#if !FEATURE_FIXED_OUT_ARGS && defined(DEBUG)
-    // Check that call->fgArgInfo used in gtArgEntryByArgNum was not
-    // left outdated by assertion propogation updates.
-    // There is no information about registers of late args for platforms
-    // with FEATURE_FIXED_OUT_ARGS that is why this debug check is under
-    // !FEATURE_FIXED_OUT_ARGS.
-    regNumber thisReg = REG_ARG_0;
-    regList   list    = call->regArgList;
-    int       index   = 0;
-    for (GenTreeCall::Use& use : call->LateArgs())
-    {
-        assert(index < call->regArgListCount);
-        regNumber curArgReg = list[index];
-        if (curArgReg == thisReg)
-        {
-            assert(result == use.GetNode());
-        }
-
-        index++;
-    }
-#endif // !FEATURE_FIXED_OUT_ARGS && defined(DEBUG)
-
     return result;
 }
 
@@ -12050,9 +12023,6 @@ void Compiler::gtDispTree(GenTree*     tree,
                                 (call->gtControlExpr == lastChild) ? IIArcBottom : IIArc, "control expr", topOnly);
                 }
 
-#if !FEATURE_FIXED_OUT_ARGS
-                regList list = call->regArgList;
-#endif
                 int lateArgIndex = 0;
                 for (GenTreeCall::Use& use : call->LateArgs())
                 {
@@ -12231,10 +12201,7 @@ void Compiler::gtGetLateArgMsg(GenTreeCall* call, GenTree* argx, int lateArgInde
     assert(curArgTabEntry);
     regNumber argReg = curArgTabEntry->GetRegNum();
 
-#if !FEATURE_FIXED_OUT_ARGS
-    assert(lateArgIndex < call->regArgListCount);
-    assert(argReg == call->regArgList[lateArgIndex]);
-#else
+#if FEATURE_FIXED_OUT_ARGS
     if (argReg == REG_STK)
     {
         sprintf_s(bufp, bufLength, "arg%d in out+%02x%c", curArgTabEntry->argNum, curArgTabEntry->GetByteOffset(), 0);

src/coreclr/jit/gentree.h

@@ -21,7 +21,6 @@ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
 #include "vartype.h"   // For "var_types"
 #include "target.h"    // For "regNumber"
 #include "ssaconfig.h" // For "SsaConfig::RESERVED_SSA_NUM"
-#include "reglist.h"
 #include "valuenumtype.h"
 #include "jitstd.h"
 #include "jithashtable.h"
@@ -4244,11 +4243,6 @@ struct GenTreeCall final : public GenTree
         return UseList(gtCallLateArgs);
     }
 
-#if !FEATURE_FIXED_OUT_ARGS
-    int     regArgListCount;
-    regList regArgList;
-#endif
-
 #ifdef DEBUG
     // Used to register callsites with the EE
     CORINFO_SIG_INFO* callSig;

src/coreclr/jit/morph.cpp

@@ -1712,27 +1712,6 @@ void fgArgInfo::SortArgs()
     assert(begTab == (endTab + 1));
     assert(argsRemaining == 0);
 
-#if !FEATURE_FIXED_OUT_ARGS
-    // Finally build the regArgList
-    //
-    callTree->AsCall()->regArgList      = NULL;
-    callTree->AsCall()->regArgListCount = regCount;
-
-    unsigned regInx = 0;
-    for (curInx = 0; curInx < argCount; curInx++)
-    {
-        fgArgTabEntry* curArgTabEntry = argTable[curInx];
-
-        if (curArgTabEntry->GetRegNum() != REG_STK)
-        {
-            // Encode the argument register in the register mask
-            //
-            callTree->AsCall()->regArgList[regInx] = curArgTabEntry->GetRegNum();
-            regInx++;
-        }
-    }
-#endif // !FEATURE_FIXED_OUT_ARGS
-
     argsSorted = true;
 }