Add `ODIN_LLVM_MINIMUM_VERSION_12`

src/llvm_backend.cpp

@@ -21,12 +21,6 @@
 #include "llvm_backend_stmt.cpp"
 #include "llvm_backend_proc.cpp"
 
-#if LLVM_VERSION_MAJOR < 11
-#error "LLVM Version 11 is the minimum required"
-#elif LLVM_VERSION_MAJOR == 12 && !(LLVM_VERSION_MINOR > 0 || LLVM_VERSION_PATCH > 0)
-#error "If LLVM Version 12.x.y is wanted, at least LLVM 12.0.1 is required"
-#endif
-
 
 void lb_add_foreign_library_path(lbModule *m, Entity *e) {
 	if (e == nullptr) {
@@ -1214,7 +1208,9 @@ void lb_generate_code(lbGenerator *gen) {
 		// x86-64-v2: (close to Nehalem) CMPXCHG16B, LAHF-SAHF, POPCNT, SSE3, SSE4.1, SSE4.2, SSSE3
 		// x86-64-v3: (close to Haswell) AVX, AVX2, BMI1, BMI2, F16C, FMA, LZCNT, MOVBE, XSAVE
 		// x86-64-v4: AVX512F, AVX512BW, AVX512CD, AVX512DQ, AVX512VL
-		llvm_cpu = "x86-64-v2";
+		if (ODIN_LLVM_MINIMUM_VERSION_12) {
+			llvm_cpu = "x86-64-v2";
+		}
 	}
 
 	// GB_ASSERT_MSG(LLVMTargetHasAsmBackend(target));

src/llvm_backend.hpp

@@ -30,6 +30,18 @@
 #include <llvm-c/Transforms/Vectorize.h>
 #endif
 
+#if LLVM_VERSION_MAJOR < 11
+#error "LLVM Version 11 is the minimum required"
+#elif LLVM_VERSION_MAJOR == 12 && !(LLVM_VERSION_MINOR > 0 || LLVM_VERSION_PATCH > 0)
+#error "If LLVM Version 12.x.y is wanted, at least LLVM 12.0.1 is required"
+#endif
+
+#if LLVM_VERSION_MAJOR > 12 || (LLVM_VERSION_MAJOR == 12 && LLVM_VERSION_MINOR >= 0 && LLVM_VERSION_PATCH > 0)
+#define ODIN_LLVM_MINIMUM_VERSION_12 1
+#else
+#define ODIN_LLVM_MINIMUM_VERSION_12 0
+#endif
+
 struct lbProcedure;
 
 struct lbValue {

src/llvm_backend_general.cpp

@@ -2065,7 +2065,7 @@ LLVMAttributeRef lb_create_enum_attribute_with_type(LLVMContextRef ctx, char con
 	unsigned kind = 0;
 	String s = make_string_c(name);
 
-	#if (LLVM_VERSION_MAJOR > 12 || (LLVM_VERSION_MAJOR == 12 && (LLVM_VERSION_MINOR > 0 || LLVM_VERSION_PATCH >= 1)))
+	#if ODIN_LLVM_MINIMUM_VERSION_12
 		kind = LLVMGetEnumAttributeKindForName(name, s.len);
 		GB_ASSERT_MSG(kind != 0, "unknown attribute: %s", name);
 		return LLVMCreateTypeAttribute(ctx, kind, type);