diff --git a/buildspecs/aix_ppc-64_cmprssptrs.spec b/buildspecs/aix_ppc-64_cmprssptrs.spec
index 750c36611fa..6af8eedf83f 100644
--- a/buildspecs/aix_ppc-64_cmprssptrs.spec
+++ b/buildspecs/aix_ppc-64_cmprssptrs.spec
@@ -135,6 +135,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_debugAsserts" value="true"/>
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_subpoolsAlias" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/cmprssptrs.feature b/buildspecs/cmprssptrs.feature
index 54742a43492..276b3be38fa 100644
--- a/buildspecs/cmprssptrs.feature
+++ b/buildspecs/cmprssptrs.feature
@@ -32,7 +32,6 @@
 		<flag id="gc_classesOnHeap" value="true"/>
 		<flag id="gc_compressedPointers" value="true"/>
 		<flag id="gc_objectAccessBarrier" value="true"/>
-		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="interp_compressedObjectHeader" value="true"/>
 		<flag id="interp_smallMonitorSlot" value="true"/>
 	</flags>
diff --git a/buildspecs/linux_390-64_cmprssptrs.spec b/buildspecs/linux_390-64_cmprssptrs.spec
index f30c34aa169..f9c30e78bb6 100644
--- a/buildspecs/linux_390-64_cmprssptrs.spec
+++ b/buildspecs/linux_390-64_cmprssptrs.spec
@@ -136,6 +136,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_enableDoubleMap" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_subpoolsAlias" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/linux_aarch64_cmprssptrs.spec b/buildspecs/linux_aarch64_cmprssptrs.spec
index 250f2ce6cfa..8f63a2b09b3 100644
--- a/buildspecs/linux_aarch64_cmprssptrs.spec
+++ b/buildspecs/linux_aarch64_cmprssptrs.spec
@@ -128,6 +128,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_debugAsserts" value="true"/>
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_tlhPrefetchFTA" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/linux_aarch64_cmprssptrs_cross.spec b/buildspecs/linux_aarch64_cmprssptrs_cross.spec
index e28a9aabb45..fc9ba14c4b0 100644
--- a/buildspecs/linux_aarch64_cmprssptrs_cross.spec
+++ b/buildspecs/linux_aarch64_cmprssptrs_cross.spec
@@ -129,6 +129,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_debugAsserts" value="true"/>
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_tlhPrefetchFTA" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/linux_ppc-64_cmprssptrs.spec b/buildspecs/linux_ppc-64_cmprssptrs.spec
index 7d268ef5bc2..951d62030fd 100644
--- a/buildspecs/linux_ppc-64_cmprssptrs.spec
+++ b/buildspecs/linux_ppc-64_cmprssptrs.spec
@@ -137,6 +137,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_enableDoubleMap" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_subpoolsAlias" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/linux_ppc-64_cmprssptrs_le.spec b/buildspecs/linux_ppc-64_cmprssptrs_le.spec
index b6551d2ee32..c23158cee88 100644
--- a/buildspecs/linux_ppc-64_cmprssptrs_le.spec
+++ b/buildspecs/linux_ppc-64_cmprssptrs_le.spec
@@ -140,6 +140,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_enableDoubleMap" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_subpoolsAlias" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/linux_riscv64_cmprssptrs.spec b/buildspecs/linux_riscv64_cmprssptrs.spec
index 2b00c23d654..f82198a60f2 100644
--- a/buildspecs/linux_riscv64_cmprssptrs.spec
+++ b/buildspecs/linux_riscv64_cmprssptrs.spec
@@ -134,6 +134,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_debugAsserts" value="true"/>
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_tlhPrefetchFTA" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/linux_riscv64_cmprssptrs_cross.spec b/buildspecs/linux_riscv64_cmprssptrs_cross.spec
index f782de09336..d1ed250d1b9 100644
--- a/buildspecs/linux_riscv64_cmprssptrs_cross.spec
+++ b/buildspecs/linux_riscv64_cmprssptrs_cross.spec
@@ -135,6 +135,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_debugAsserts" value="true"/>
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_tlhPrefetchFTA" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/linux_x86-64_cmprssptrs.spec b/buildspecs/linux_x86-64_cmprssptrs.spec
index 2582d3d1100..5feb68f1f63 100644
--- a/buildspecs/linux_x86-64_cmprssptrs.spec
+++ b/buildspecs/linux_x86-64_cmprssptrs.spec
@@ -137,6 +137,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_enableDoubleMap" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_tlhPrefetchFTA" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/linux_ztpf_390-64.spec b/buildspecs/linux_ztpf_390-64.spec
index b440c78118b..6fbb2d3e737 100644
--- a/buildspecs/linux_ztpf_390-64.spec
+++ b/buildspecs/linux_ztpf_390-64.spec
@@ -134,7 +134,6 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_debugAsserts" value="true"/>
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
-		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_subpoolsAlias" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_j2seSanity" value="true"/>
diff --git a/buildspecs/osx_x86-64_cmprssptrs.spec b/buildspecs/osx_x86-64_cmprssptrs.spec
index 520bbd412b4..6c7607496f8 100644
--- a/buildspecs/osx_x86-64_cmprssptrs.spec
+++ b/buildspecs/osx_x86-64_cmprssptrs.spec
@@ -135,6 +135,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_enableDoubleMap" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_tlhPrefetchFTA" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/win_x86-64_cmprssptrs.spec b/buildspecs/win_x86-64_cmprssptrs.spec
index 0679ef85f32..b2fe2f0e042 100644
--- a/buildspecs/win_x86-64_cmprssptrs.spec
+++ b/buildspecs/win_x86-64_cmprssptrs.spec
@@ -142,6 +142,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_debugAsserts" value="true"/>
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_tlhPrefetchFTA" value="true"/>
 		<flag id="graph_cmdLineTester" value="true"/>
 		<flag id="graph_compile" value="true"/>
diff --git a/buildspecs/zos_390-64_cmprssptrs.spec b/buildspecs/zos_390-64_cmprssptrs.spec
index bba6ca78697..746447f9ddb 100644
--- a/buildspecs/zos_390-64_cmprssptrs.spec
+++ b/buildspecs/zos_390-64_cmprssptrs.spec
@@ -131,6 +131,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-ex
 		<flag id="gc_debugAsserts" value="true"/>
 		<flag id="gc_inlinedAllocFields" value="true"/>
 		<flag id="gc_minimumObjectSize" value="true"/>
+		<flag id="gc_sparseHeapAllocation" value="true"/>
 		<flag id="gc_subpoolsAlias" value="true"/>
 		<flag id="graph_compile" value="true"/>
 		<flag id="graph_copyJ2SEToToronto" value="true"/>