8308172: [Lilliput/JDK17] Revert disabling vzeroupper

rkennke · rkennke · commit a7a8efbdaa7d · 2023-05-16T11:56:46.000Z
Reviewed-by: shade
diff --git a/src/hotspot/share/opto/library_call.hpp b/src/hotspot/share/opto/library_call.hpp
@@ -344,7 +344,7 @@ class LibraryCallKit : public GraphKit {
 
   void clear_upper_avx() {
 #ifdef X86
-    if (false && UseAVX >= 2) {
+    if (UseAVX >= 2) {
       C->set_clear_upper_avx(true);
     }
 #endif

Original file line number	Diff line number	Diff line change
`@@ -344,7 +344,7 @@ class LibraryCallKit : public GraphKit {`
`344`	`344`
`345`	`345`	`void clear_upper_avx() {`
`346`	`346`	`#ifdef X86`
`347`		`- if (false && UseAVX >= 2) {`
	`347`	`+ if (UseAVX >= 2) {`
`348`	`348`	`C->set_clear_upper_avx(true);`
`349`	`349`	`}`
`350`	`350`	`#endif`