From f621f26cd113090a0305598cfc50f0eac9a263c6 Mon Sep 17 00:00:00 2001
From: Martin Doerr <mdoerr@openjdk.org>
Date: Thu, 7 Nov 2024 22:11:34 +0000
Subject: [PATCH] 8343724: [PPC64] Disallow OptoScheduling

Reviewed-by: rrich, mbaesken
---
 src/hotspot/cpu/ppc/c2_init_ppc.cpp    | 18 +-----------------
 src/hotspot/cpu/ppc/vm_version_ppc.cpp | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+), 17 deletions(-)

diff --git a/src/hotspot/cpu/ppc/c2_init_ppc.cpp b/src/hotspot/cpu/ppc/c2_init_ppc.cpp
index d15f880e413..e517cdf7de1 100644
--- a/src/hotspot/cpu/ppc/c2_init_ppc.cpp
+++ b/src/hotspot/cpu/ppc/c2_init_ppc.cpp
@@ -34,21 +34,5 @@
 // Processor dependent initialization of C2 compiler for ppc.
 
 void Compile::pd_compiler2_init() {
-
-  // Power7 and later.
-  if (PowerArchitecturePPC64 > 6) {
-    if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
-      FLAG_SET_ERGO(UsePopCountInstruction, true);
-    }
-  }
-
-  if (!VM_Version::has_isel() && FLAG_IS_DEFAULT(ConditionalMoveLimit)) {
-    FLAG_SET_ERGO(ConditionalMoveLimit, 0);
-  }
-
-  if (OptimizeFill) {
-    warning("OptimizeFill is not supported on this CPU.");
-    FLAG_SET_DEFAULT(OptimizeFill, false);
-  }
-
+  guarantee(CodeEntryAlignment >= InteriorEntryAlignment, "");
 }
diff --git a/src/hotspot/cpu/ppc/vm_version_ppc.cpp b/src/hotspot/cpu/ppc/vm_version_ppc.cpp
index 20578ed3b8b..37e15548b4f 100644
--- a/src/hotspot/cpu/ppc/vm_version_ppc.cpp
+++ b/src/hotspot/cpu/ppc/vm_version_ppc.cpp
@@ -110,6 +110,17 @@ void VM_Version::initialize() {
     FLAG_SET_ERGO(TrapBasedRangeChecks, false);
   }
 
+  // Power7 and later.
+  if (PowerArchitecturePPC64 > 6) {
+    if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
+      FLAG_SET_ERGO(UsePopCountInstruction, true);
+    }
+  }
+
+  if (!VM_Version::has_isel() && FLAG_IS_DEFAULT(ConditionalMoveLimit)) {
+    FLAG_SET_ERGO(ConditionalMoveLimit, 0);
+  }
+
   if (PowerArchitecturePPC64 >= 8) {
     if (FLAG_IS_DEFAULT(SuperwordUseVSX)) {
       FLAG_SET_ERGO(SuperwordUseVSX, true);
@@ -169,6 +180,17 @@ void VM_Version::initialize() {
       FLAG_SET_DEFAULT(UseByteReverseInstructions, false);
     }
   }
+
+  if (OptimizeFill) {
+    warning("OptimizeFill is not supported on this CPU.");
+    FLAG_SET_DEFAULT(OptimizeFill, false);
+  }
+
+  if (OptoScheduling) {
+    // The OptoScheduling information is not maintained in ppd.ad.
+    warning("OptoScheduling is not supported on this CPU.");
+    FLAG_SET_DEFAULT(OptoScheduling, false);
+  }
 #endif
 
   // Create and print feature-string.