8370138: C2: clean up Matcher::use_asm_for_ldiv_by_con can

Reviewed-by: qamai, snatarajan

src/hotspot/cpu/aarch64/aarch64.ad

@@ -2524,10 +2524,6 @@ uint Matcher::float_pressure_limit()
   return (FLOATPRESSURE == -1) ? _FLOAT_REG_mask.size() : FLOATPRESSURE;
 }
 
-bool Matcher::use_asm_for_ldiv_by_con(jlong divisor) {
-  return false;
-}
-
 const RegMask& Matcher::divI_proj_mask() {
   ShouldNotReachHere();
   return RegMask::EMPTY;

src/hotspot/cpu/arm/arm.ad

@@ -1,5 +1,5 @@
 //
-// Copyright (c) 2008, 2025, Oracle and/or its affiliates. All rights reserved.
+// Copyright (c) 2008, 2026, Oracle and/or its affiliates. All rights reserved.
 // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 //
 // This code is free software; you can redistribute it and/or modify it
@@ -1112,10 +1112,6 @@ uint Matcher::float_pressure_limit()
   return (FLOATPRESSURE == -1) ? 30 : FLOATPRESSURE;
 }
 
-bool Matcher::use_asm_for_ldiv_by_con( jlong divisor ) {
-  return false;
-}
-
 // Register for DIVI projection of divmodI
 const RegMask& Matcher::divI_proj_mask() {
   ShouldNotReachHere();

src/hotspot/cpu/ppc/ppc.ad

@@ -2457,10 +2457,6 @@ uint Matcher::float_pressure_limit()
   return (FLOATPRESSURE == -1) ? 28 : FLOATPRESSURE;
 }
 
-bool Matcher::use_asm_for_ldiv_by_con(jlong divisor) {
-  return false;
-}
-
 // Register for DIVI projection of divmodI.
 const RegMask& Matcher::divI_proj_mask() {
   ShouldNotReachHere();

src/hotspot/cpu/riscv/riscv.ad

@@ -2111,10 +2111,6 @@ uint Matcher::float_pressure_limit()
   return (FLOATPRESSURE == -1) ? _FLOAT_REG_mask.size() : FLOATPRESSURE;
 }
 
-bool Matcher::use_asm_for_ldiv_by_con(jlong divisor) {
-  return false;
-}
-
 const RegMask& Matcher::divI_proj_mask() {
   ShouldNotReachHere();
   return RegMask::EMPTY;

src/hotspot/cpu/s390/s390.ad

@@ -1929,10 +1929,6 @@ uint Matcher::float_pressure_limit()
   return (FLOATPRESSURE == -1) ? 15 : FLOATPRESSURE;
 }
 
-bool Matcher::use_asm_for_ldiv_by_con(jlong divisor) {
-  return false;
-}
-
 // Register for DIVI projection of divmodI
 const RegMask& Matcher::divI_proj_mask() {
   return _Z_RARG4_INT_REG_mask;

src/hotspot/cpu/x86/x86.ad

@@ -2763,13 +2763,6 @@ uint Matcher::float_pressure_limit()
   return (FLOATPRESSURE == -1) ? default_float_pressure_threshold : FLOATPRESSURE;
 }
 
-bool Matcher::use_asm_for_ldiv_by_con( jlong divisor ) {
-  // In 64 bit mode a code which use multiply when
-  // devisor is constant is faster than hardware
-  // DIV instruction (it uses MulHiL).
-  return false;
-}
-
 // Register for DIVI projection of divmodI
 const RegMask& Matcher::divI_proj_mask() {
   return INT_RAX_REG_mask();

src/hotspot/share/opto/divnode.cpp

@@ -419,8 +419,7 @@ static Node *transform_long_divide( PhaseGVN *phase, Node *dividend, jlong divis
     if (!d_pos) {
       q = new SubLNode(phase->longcon(0), phase->transform(q));
     }
-  } else if ( !Matcher::use_asm_for_ldiv_by_con(d) ) { // Use hardware DIV instruction when
-                                                       // it is faster than code generated below.
+  } else {
     // Attempt the jlong constant divide -> multiply transform found in
     //   "Division by Invariant Integers using Multiplication"
     //     by Granlund and Montgomery

src/hotspot/share/opto/matcher.hpp

@@ -429,10 +429,6 @@ public:
   // Register for MODL projection of divmodL
   static const RegMask& modL_proj_mask();
 
-  // Use hardware DIV instruction when it is faster than
-  // a code which use multiply for division by constant.
-  static bool use_asm_for_ldiv_by_con( jlong divisor );
-
   // Java-Interpreter calling convention
   // (what you use when calling between compiled-Java and Interpreted-Java