build(deps): Initial support for LLVM-18 (#1773)

Signed-off-by: مهدي شينون (Mehdi Chinoune) <mehdi.chinoune@hotmail.com>

src/cmake/externalpackages.cmake

@@ -117,7 +117,7 @@ checked_find_package (pugixml REQUIRED
 # LLVM library setup
 checked_find_package (LLVM REQUIRED
                       VERSION_MIN 9.0
-                      VERSION_MAX 17.9
+                      VERSION_MAX 18.9
                       PRINT LLVM_SYSTEM_LIBRARIES CLANG_LIBRARIES)
 # ensure include directory is added (in case of non-standard locations
 include_directories (BEFORE SYSTEM "${LLVM_INCLUDES}")

src/liboslcomp/oslcomp.cpp

@@ -26,7 +26,11 @@
 #include <clang/Frontend/TextDiagnosticPrinter.h>
 #include <clang/Frontend/Utils.h>
 #include <clang/Lex/PreprocessorOptions.h>
-#include <llvm/Support/Host.h>
+#if OSL_LLVM_VERSION < 160
+#    include <llvm/Support/Host.h>
+#else
+#    include <llvm/TargetParser/Host.h>
+#endif
 #include <llvm/Support/MemoryBuffer.h>
 #include <llvm/Support/ToolOutputFile.h>
 #include <llvm/Support/raw_ostream.h>

src/liboslexec/llvm_passes.h

@@ -349,7 +349,11 @@ public:
                                         // Should handle promoting whatever the constant value is (most likely zeroinitializer)
                                         llvm::ConstantFolder Folder;
                                         auto* signExtConstant
+#if OSL_LLVM_VERSION < 180
                                             = Folder.CreateCast(
+#else
+                                            = Folder.FoldCast(
+#endif
                                                 llvm::Instruction::SExt,
                                                 constant, m_native_mask_type);
 

src/liboslexec/llvm_util.cpp

@@ -45,7 +45,11 @@
 #include <llvm/Support/CommandLine.h>
 #include <llvm/Support/ErrorOr.h>
 #include <llvm/Support/FileSystem.h>
-#include <llvm/Support/Host.h>
+#if OSL_LLVM_VERSION < 160
+#    include <llvm/Support/Host.h>
+#else
+#    include <llvm/TargetParser/Host.h>
+#endif
 #include <llvm/Support/raw_os_ostream.h>
 #if OSL_LLVM_VERSION < 140
 #    include <llvm/Support/TargetRegistry.h>