Add macro for LLVM backend

Author: loicottet

sdk/mx.sdk/mx_sdk_benchmark.py

@@ -425,7 +425,7 @@ def __init__(self, vm: NativeImageVM, bm_suite: BenchmarkSuite | NativeImageBenc
         if vm.use_compacting_gc:
             base_image_build_args += ['-H:+CompactingOldGen']
         if vm.is_llvm:
-            base_image_build_args += ['--features=org.graalvm.home.HomeFinderFeature'] + ['-H:CompilerBackend=llvm',
+            base_image_build_args += ['--features=org.graalvm.home.HomeFinderFeature'] + ['--tool:llvm-backend',
                                                                                           '-H:DeadlockWatchdogInterval=0']
         if vm.gc:
             base_image_build_args += ['--gc=' + vm.gc] + ['-H:+SpawnIsolates']

substratevm/CHANGELOG.md

@@ -7,6 +7,7 @@ This changelog summarizes major changes to GraalVM Native Image.
 * (GR-43070) Add a new API flag `-Werror` to treat warnings as errors.
 * (GR-69280) Allow use of the `graal.` prefix for options without issuing a warning.
 * (GR-2092) Add jitdump support for recording run-time compilation metadata for perf (see PerfProfiling.md). Can be enabled with `-g -H:+RuntimeDebugInfo -H:RuntimeDebugInfoFormat=jitdump`.
+* (GR-70136) Add a new tool `--tool:llvm` for the LLVM backend of Native Image.
 
 ## GraalVM 25
 * (GR-52276) (GR-61959) Add support for Arena.ofShared().

substratevm/ci/ci_common/svm-gate.libsonnet

@@ -116,7 +116,7 @@
 
   use_llvm:: task_spec({
       mxgate_config+::["llvm"],
-      mxgate_extra_args+: ["--extra-image-builder-arguments=-H:+UnlockExperimentalVMOptions -H:CompilerBackend=llvm -H:-UnlockExperimentalVMOptions"],
+      mxgate_extra_args+: ["--extra-image-builder-arguments=-H:+UnlockExperimentalVMOptions --tool:llvm-backend -H:-UnlockExperimentalVMOptions"],
   }),
 
   use_ecj:: task_spec({

substratevm/mx.substratevm/mx_substratevm.py

@@ -1546,11 +1546,11 @@ def _native_image_launcher_extra_jvm_args():
     jlink=False,
 ))
 
-ce_llvm_backend = mx_sdk_vm.GraalVmJreComponent(
+ce_llvm_backend = mx_sdk_vm.GraalVmSvmTool(
     suite=suite,
     name='Native Image LLVM Backend',
     short_name='svml',
-    dir_name='svm',
+    dir_name='llvm-backend',
     license_files=[],
     third_party_license_files=[],
     dependencies=[
@@ -1564,6 +1564,7 @@ def _native_image_launcher_extra_jvm_args():
         'substratevm:LLVM_PLATFORM_SPECIFIC_SHADOWED',
         'substratevm:JAVACPP_PLATFORM_SPECIFIC_SHADOWED',
     ],
+    support_distributions=['substratevm:SVM_LLVM_GRAALVM_SUPPORT'],
     stability="experimental-earlyadopter",
     jlink=False,
 )

substratevm/mx.substratevm/suite.py

@@ -2610,6 +2610,15 @@
             "maven" : False,
         },
 
+        "SVM_LLVM_GRAALVM_SUPPORT": {
+            "native": True,
+            "description": "LLVM backend support distribution for SVM",
+            "layout": {
+                "native-image.properties": "file:mx.substratevm/tool-llvm.properties",
+            },
+            "maven": False,
+        },
+
         "SVM_TRUFFLE_TCK" : {
             "subDir" : "src",
             "description" : "Truffle TCK",

substratevm/mx.substratevm/tool-llvm.properties

@@ -0,0 +1,4 @@
+ProvidedHostedOptions=IncludeLLVMDebugInfo= DumpLLVMStackMap= LLVMMaxFunctionsPerBatch= CustomLD= BitcodeOptimizations UseLLVMDataSection LLVMDataSectionBatchSizeFactor=
+ImageBuilderModulePath=${.}/builder/svm-llvm.jar:${.}/builder/javacpp-shadowed.jar:${.}/builder/javacpp-platform-specific-shadowed.jar:${.}/builder/llvm-wrapper-shadowed.jar:${.}/builder/llvm-platform-specific-shadowed.jar
+Args=-H:CompilerBackend=llvm
+ExcludeFromAll=true

substratevm/src/com.oracle.svm.core.graal.llvm/src/com/oracle/svm/core/graal/llvm/LLVMBackend.md

@@ -11,7 +11,7 @@ mx --dynamicimports /substratevm build
 export JAVA_HOME=$(mx --dynamicimports /substratevm graalvm-home)
 ```
 
-To enable the LLVM backend, pass the `-H:CompilerBackend=llvm` option to the `native-image` command. 
+To enable the LLVM backend, pass the `--tool:llvm` option to the `native-image` command. 
 
 ## Code Generation Options