8321105: Enable UseCryptoPmullForCRC32 for Neoverse V2

Evgeny Astigeevich · Evgeny Astigeevich · commit 5b02188f723e · 2023-12-05T13:05:23.000Z
Reviewed-by: shade, ngasson
diff --git a/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp b/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
@@ -204,7 +204,11 @@ void VM_Version::initialize() {
     }
   }
 
-  // Neoverse N1, N2, V1, V2
+  // Neoverse
+  //   N1: 0xd0c
+  //   N2: 0xd49
+  //   V1: 0xd40
+  //   V2: 0xd4f
   if (_cpu == CPU_ARM && (model_is(0xd0c) || model_is(0xd49) ||
                           model_is(0xd40) || model_is(0xd4f))) {
     if (FLAG_IS_DEFAULT(UseSIMDForMemoryOps)) {
@@ -235,8 +239,10 @@ void VM_Version::initialize() {
     FLAG_SET_DEFAULT(UseCRC32, false);
   }
 
-  // Neoverse V1
-  if (_cpu == CPU_ARM && model_is(0xd40)) {
+  // Neoverse
+  //   V1: 0xd40
+  //   V2: 0xd4f
+  if (_cpu == CPU_ARM && (model_is(0xd40) || model_is(0xd4f))) {
     if (FLAG_IS_DEFAULT(UseCryptoPmullForCRC32)) {
       FLAG_SET_DEFAULT(UseCryptoPmullForCRC32, true);
     }

Original file line number	Diff line number	Diff line change
`@@ -204,7 +204,11 @@ void VM_Version::initialize() {`
`204`	`204`	`}`
`205`	`205`	`}`
`206`	`206`
`207`		`- // Neoverse N1, N2, V1, V2`
	`207`	`+ // Neoverse`
	`208`	`+ // N1: 0xd0c`
	`209`	`+ // N2: 0xd49`
	`210`	`+ // V1: 0xd40`
	`211`	`+ // V2: 0xd4f`
`208`	`212`	`if (_cpu == CPU_ARM && (model_is(0xd0c) \|\| model_is(0xd49) \|\|`
`209`	`213`	`model_is(0xd40) \|\| model_is(0xd4f))) {`
`210`	`214`	`if (FLAG_IS_DEFAULT(UseSIMDForMemoryOps)) {`
`@@ -235,8 +239,10 @@ void VM_Version::initialize() {`
`235`	`239`	`FLAG_SET_DEFAULT(UseCRC32, false);`
`236`	`240`	`}`
`237`	`241`
`238`		`- // Neoverse V1`
`239`		`- if (_cpu == CPU_ARM && model_is(0xd40)) {`
	`242`	`+ // Neoverse`
	`243`	`+ // V1: 0xd40`
	`244`	`+ // V2: 0xd4f`
	`245`	`+ if (_cpu == CPU_ARM && (model_is(0xd40) \|\| model_is(0xd4f))) {`
`240`	`246`	`if (FLAG_IS_DEFAULT(UseCryptoPmullForCRC32)) {`
`241`	`247`	`FLAG_SET_DEFAULT(UseCryptoPmullForCRC32, true);`
`242`	`248`	`}`