[PPC][BOLT] Fix build error, copy PPCGenRegisterInfo.inc to include dir as soon as it is generated, before any compilation step tries to include it

Author: kostasalv

bolt/lib/Target/PowerPC/CMakeLists.txt

@@ -7,24 +7,23 @@ target_include_directories(LLVMBOLTTargetPowerPC PRIVATE
     ${LLVM_SOURCE_DIR}/include
 )
 
-# Ensure the destination directory exists
 file(MAKE_DIRECTORY "${LLVM_BINARY_DIR}/include/llvm/Target/PowerPC")
 
-# Custom command to copy the .inc file when it's generated
-add_custom_command(
-    OUTPUT "${LLVM_BINARY_DIR}/include/llvm/Target/PowerPC/PPCGenInstrInfo.inc"
-    COMMAND ${CMAKE_COMMAND} -E copy_if_different
-        "${LLVM_BINARY_DIR}/lib/Target/PowerPC/PPCGenInstrInfo.inc"
-        "${LLVM_BINARY_DIR}/include/llvm/Target/PowerPC/PPCGenInstrInfo.inc"
-    DEPENDS "${LLVM_BINARY_DIR}/lib/Target/PowerPC/PPCGenInstrInfo.inc"
-    COMMENT "Copying PPCGenInstrInfo.inc to include directory"
+foreach(incfile IN ITEMS
+    PPCGenInstrInfo.inc
+    PPCGenRegisterInfo.inc
 )
-
-# Custom target to represent the copied .inc file
-add_custom_target(
-    BoltCopyPPCGenInstrInfoInc ALL
-    DEPENDS "${LLVM_BINARY_DIR}/include/llvm/Target/PowerPC/PPCGenInstrInfo.inc"
-)
-
-# Make your library depend on the copy
-add_dependencies(LLVMBOLTTargetPowerPC BoltCopyPPCGenInstrInfoInc)
+    add_custom_command(
+        OUTPUT "${LLVM_BINARY_DIR}/include/llvm/Target/PowerPC/${incfile}"
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+            "${LLVM_BINARY_DIR}/lib/Target/PowerPC/${incfile}"
+            "${LLVM_BINARY_DIR}/include/llvm/Target/PowerPC/${incfile}"
+        DEPENDS "${LLVM_BINARY_DIR}/lib/Target/PowerPC/${incfile}"
+        COMMENT "Copying ${incfile} to include directory"
+    )
+    add_custom_target(
+        "BoltCopy${incfile}" ALL
+        DEPENDS "${LLVM_BINARY_DIR}/include/llvm/Target/PowerPC/${incfile}"
+    )
+    add_dependencies(LLVMBOLTTargetPowerPC "BoltCopy${incfile}")
+endforeach()