8287425: Remove unnecessary register push for MacroAssembler::check_k…

…lass_subtype_slow_path Reviewed-by: phh Backport-of: b5a646ee6cfd432cef6b7e69a177959227a38ace
openjdk · Nov 22, 2022 · 7340e1b · 7340e1b · openjdk-notifier · Nov 22, 2022
1 parent 7964440
commit 7340e1b
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp b/src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
@@ -1268,7 +1268,7 @@ void MacroAssembler::check_klass_subtype_slow_path(Register sub_klass,
   if (!IS_A_TEMP(r2))    pushed_registers += r2;
   if (!IS_A_TEMP(r5))    pushed_registers += r5;
 
-  if (super_klass != r0 || UseCompressedOops) {
+  if (super_klass != r0) {
     if (!IS_A_TEMP(r0))   pushed_registers += r0;
   }
 

diff --git a/src/hotspot/cpu/x86/macroAssembler_x86.cpp b/src/hotspot/cpu/x86/macroAssembler_x86.cpp
@@ -4785,7 +4785,7 @@ void MacroAssembler::check_klass_subtype_slow_path(Register sub_klass,
 
   // Get super_klass value into rax (even if it was in rdi or rcx).
   bool pushed_rax = false, pushed_rcx = false, pushed_rdi = false;
-  if (super_klass != rax || UseCompressedOops) {
+  if (super_klass != rax) {
     if (!IS_A_TEMP(rax)) { push(rax); pushed_rax = true; }
     mov(rax, super_klass);
   }