make/hotspot/lib/JvmFeatures.gmk

@@ -150,12 +150,12 @@
 ifeq ($(call check-jvm-feature, link-time-opt), true)
   # NOTE: Disable automatic opimization level and let the explicit cflag control
   # optimization level instead. This activates O3 on slowdebug builds, just
   # like the old build, but it's probably not right.
   JVM_OPTIMIZATION :=
-  JVM_CFLAGS_FEATURES += -O3 -flto
-  JVM_LDFLAGS_FEATURES += -O3 -flto -fuse-linker-plugin -fno-strict-aliasing
+  JVM_CFLAGS_FEATURES += -O0 -flto
+  JVM_LDFLAGS_FEATURES += -O0 -flto -fuse-linker-plugin -fno-strict-aliasing
 endif
 
 ifeq ($(call check-jvm-feature, minimal), true)
   ifeq ($(call check-jvm-feature, link-time-opt), false)
     JVM_OPTIMIZATION := SIZE