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make/Images.gmk

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*** 121,14 ***
  CDS_DUMP_FLAGS = -Xmx128M -Xms128M
  
  # Helper function for creating the CDS archives for the JDK and JRE
  #
  # Param1 - VM variant (e.g., server, client, zero, ...)
! # Param2 - _nocoops, or empty
  define CreateCDSArchive
!   $1_$2_DUMP_EXTRA_ARG := $(if $(filter _nocoops, $2),-XX:-UseCompressedOops,)
!   $1_$2_DUMP_TYPE      := $(if $(filter _nocoops, $2),-NOCOOPS,)
  
    # Only G1 supports dumping the shared heap, so explicitly use G1 if the JVM supports it.
    $1_$2_CDS_DUMP_FLAGS := $(CDS_DUMP_FLAGS) $(if $(filter g1gc, $(JVM_FEATURES_$1)),-XX:+UseG1GC)
  
    ifeq ($(OPENJDK_TARGET_OS), windows)
--- 121,20 ---
  CDS_DUMP_FLAGS = -Xmx128M -Xms128M
  
  # Helper function for creating the CDS archives for the JDK and JRE
  #
  # Param1 - VM variant (e.g., server, client, zero, ...)
! # Param2 - _nocoops, _coh, _nocoops_coh, or empty
  define CreateCDSArchive
!   $1_$2_COOPS_OPTION := $(if $(findstring _nocoops, $2),-XX:-UseCompressedOops)
!   # enable and also explicitly disable coh as needed.
+   ifeq ($(call isTargetCpuBits, 64), true)
+     $1_$2_COH_OPTION := -XX:+UnlockExperimentalVMOptions \
+                         $(if $(findstring _coh, $2),-XX:+UseCompactObjectHeaders,-XX:-UseCompactObjectHeaders)
+   endif
+   $1_$2_DUMP_EXTRA_ARG := $$($1_$2_COOPS_OPTION) $$($1_$2_COH_OPTION)
+   $1_$2_DUMP_TYPE      := $(if $(findstring _nocoops, $2),-NOCOOPS,)$(if $(findstring _coh, $2),-COH,)
  
    # Only G1 supports dumping the shared heap, so explicitly use G1 if the JVM supports it.
    $1_$2_CDS_DUMP_FLAGS := $(CDS_DUMP_FLAGS) $(if $(filter g1gc, $(JVM_FEATURES_$1)),-XX:+UseG1GC)
  
    ifeq ($(OPENJDK_TARGET_OS), windows)

*** 171,10 ***
--- 177,18 ---
  
    ifeq ($(call isTargetCpuBits, 64), true)
      $(foreach v, $(JVM_VARIANTS), \
        $(eval $(call CreateCDSArchive,$v,_nocoops)) \
      )
+     ifeq ($(BUILD_CDS_ARCHIVE_COH), true)
+       $(foreach v, $(JVM_VARIANTS), \
+         $(eval $(call CreateCDSArchive,$v,_coh)) \
+       )
+       $(foreach v, $(JVM_VARIANTS), \
+         $(eval $(call CreateCDSArchive,$v,_nocoops_coh)) \
+       )
+     endif
    endif
  endif
  
  ################################################################################
  # src.zip
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