8370244: [PPC64] Several vector tests fail on Power8

TheRealMDoerr · TheRealMDoerr · commit ab000691b93c · 2025-11-10T11:41:41.000+01:00
diff --git a/src/hotspot/cpu/ppc/vm_version_ppc.cpp b/src/hotspot/cpu/ppc/vm_version_ppc.cpp
@@ -111,6 +111,10 @@ void VM_Version::initialize() {
   }
 
   MaxVectorSize = SuperwordUseVSX ? 16 : 8;
+  if (!SuperwordUseVSX && FLAG_IS_DEFAULT(EnableVectorSupport)) {
+    // VectorSupport intrinsics currently have issues with MaxVectorSize < 16 (JDK-8370803).
+    FLAG_SET_ERGO(EnableVectorSupport, false);
+  }
   if (FLAG_IS_DEFAULT(AlignVector)) {
     FLAG_SET_ERGO(AlignVector, false);
   }

Original file line number	Diff line number	Diff line change
`@@ -111,6 +111,10 @@ void VM_Version::initialize() {`
`111`	`111`	`}`
`112`	`112`
`113`	`113`	`MaxVectorSize = SuperwordUseVSX ? 16 : 8;`
	`114`	`+ if (!SuperwordUseVSX && FLAG_IS_DEFAULT(EnableVectorSupport)) {`
	`115`	`+ // VectorSupport intrinsics currently have issues with MaxVectorSize < 16 (JDK-8370803).`
	`116`	`+ FLAG_SET_ERGO(EnableVectorSupport, false);`
	`117`	`+ }`
`114`	`118`	`if (FLAG_IS_DEFAULT(AlignVector)) {`
`115`	`119`	`FLAG_SET_ERGO(AlignVector, false);`
`116`	`120`	`}`