Remove dead code related to old backend

src/build_settings.cpp

@@ -173,8 +173,6 @@ struct BuildContext {
 	String resource_filepath;
 	String pdb_filepath;
 	bool   has_resource;
-	String opt_flags;
-	String llc_flags;
 	String link_flags;
 	String extra_linker_flags;
 	String microarch;
@@ -806,22 +804,12 @@ void init_build_context(TargetMetrics *cross_target) {
 	bc->word_size   = metrics->word_size;
 	bc->max_align   = metrics->max_align;
 	bc->link_flags  = str_lit(" ");
-	bc->opt_flags   = str_lit(" ");
 
 
-	gbString llc_flags = gb_string_make_reserve(heap_allocator(), 64);
-	if (bc->ODIN_DEBUG) {
-		// llc_flags = gb_string_appendc(llc_flags, "-debug-compile ");
-	}
-
 	// NOTE(zangent): The linker flags to set the build architecture are different
 	// across OSs. It doesn't make sense to allocate extra data on the heap
 	// here, so I just #defined the linker flags to keep things concise.
 	if (bc->metrics.arch == TargetArch_amd64) {
-		if (bc->microarch.len == 0) {
-			llc_flags = gb_string_appendc(llc_flags, "-march=x86-64 ");
-		}
-
 		switch (bc->metrics.os) {
 		case TargetOs_windows:
 			bc->link_flags = str_lit("/machine:x64 ");
@@ -836,10 +824,6 @@ void init_build_context(TargetMetrics *cross_target) {
 			break;
 		}
 	} else if (bc->metrics.arch == TargetArch_386) {
-		if (bc->microarch.len == 0) {
-			llc_flags = gb_string_appendc(llc_flags, "-march=x86 ");
-		}
-
 		switch (bc->metrics.os) {
 		case TargetOs_windows:
 			bc->link_flags = str_lit("/machine:x86 ");
@@ -856,10 +840,6 @@ void init_build_context(TargetMetrics *cross_target) {
 			break;
 		}
 	} else if (bc->metrics.arch == TargetArch_arm64) {
-		if (bc->microarch.len == 0) {
-			llc_flags = gb_string_appendc(llc_flags, "-march=arm64 ");
-		}
-
 		switch (bc->metrics.os) {
 		case TargetOs_darwin:
 			bc->link_flags = str_lit("-arch arm64 ");
@@ -872,50 +852,9 @@ void init_build_context(TargetMetrics *cross_target) {
 		gb_printf_err("Compiler Error: Unsupported architecture\n");;
 		gb_exit(1);
 	}
-	llc_flags = gb_string_appendc(llc_flags, " ");
-
 
 	bc->optimization_level = gb_clamp(bc->optimization_level, 0, 3);
 
-	gbString opt_flags = gb_string_make_reserve(heap_allocator(), 64);
-
-	if (bc->microarch.len != 0) {
-		opt_flags = gb_string_appendc(opt_flags, "-march=");
-		opt_flags = gb_string_append_length(opt_flags, bc->microarch.text, bc->microarch.len);
-		opt_flags = gb_string_appendc(opt_flags, " ");
-
-		// llc_flags = gb_string_appendc(opt_flags, "-march=");
-		// llc_flags = gb_string_append_length(llc_flags, bc->microarch.text, bc->microarch.len);
-		// llc_flags = gb_string_appendc(llc_flags, " ");
-	}
-
-
-	if (bc->optimization_level != 0) {
-		opt_flags = gb_string_append_fmt(opt_flags, "-O%d ", bc->optimization_level);
-		// NOTE(lachsinc): The following options were previously passed during call
-		// to opt in main.cpp:exec_llvm_opt().
-		//   -die:       Dead instruction elimination
-		//   -memcpyopt: MemCpy optimization
-	}
-	if (bc->ODIN_DEBUG == false) {
-		opt_flags = gb_string_appendc(opt_flags, "-mem2reg -die ");
-	}
-
-
-
-
-
-	// NOTE(lachsinc): This optimization option was previously required to get
-	// around an issue in fmt.odin. Thank bp for tracking it down! Leaving for now until the issue
-	// is resolved and confirmed by Bill. Maybe it should be readded in non-debug builds.
-	// if (bc->ODIN_DEBUG == false) {
-	// 	opt_flags = gb_string_appendc(opt_flags, "-mem2reg ");
-	// }
-
-	bc->opt_flags = make_string_c(opt_flags);
-	bc->llc_flags = make_string_c(llc_flags);
-
-
 	#undef LINK_FLAG_X64
 	#undef LINK_FLAG_386
 }

src/main.cpp

@@ -265,22 +265,22 @@ i32 linker_stage(lbGenerator *gen) {
 					LIT(build_context.resource_filepath)
 				);
 
-        if(result == 0) {
-          result = system_exec_command_line_app("msvc-link",
-            "\"%.*slink.exe\" %s \"%.*s.res\" -OUT:\"%.*s.%s\" %s "
-            "/nologo /incremental:no /opt:ref /subsystem:%s "
-            " %.*s "
-            " %.*s "
-            " %s "
-            "",
-            LIT(find_result.vs_exe_path), object_files, LIT(output_base), LIT(output_base), output_ext,
-            link_settings,
-            subsystem_str,
-            LIT(build_context.link_flags),
-            LIT(build_context.extra_linker_flags),
-            lib_str
-          );
-        }
+				if (result == 0) {
+					result = system_exec_command_line_app("msvc-link",
+						"\"%.*slink.exe\" %s \"%.*s.res\" -OUT:\"%.*s.%s\" %s "
+						"/nologo /incremental:no /opt:ref /subsystem:%s "
+						" %.*s "
+						" %.*s "
+						" %s "
+						"",
+						LIT(find_result.vs_exe_path), object_files, LIT(output_base), LIT(output_base), output_ext,
+						link_settings,
+						subsystem_str,
+						LIT(build_context.link_flags),
+						LIT(build_context.extra_linker_flags),
+						lib_str
+					  );
+				}
 			} else {
 				result = system_exec_command_line_app("msvc-link",
 					"\"%.*slink.exe\" %s -OUT:\"%.*s.%s\" %s "
@@ -1535,69 +1535,6 @@ void remove_temp_files(String output_base) {
 }
 
 
-
-
-i32 exec_llvm_opt(String output_base) {
-#if defined(GB_SYSTEM_WINDOWS)
-	// For more passes arguments: http://llvm.org/docs/Passes.html
-
-  return system_exec_command_line_app("llvm-opt",
-		"\"%.*sbin/opt\" \"%.*s.ll\" -o \"%.*s_memcpy_pass.bc\" -memcpyopt"
-		"",
-		LIT(build_context.ODIN_ROOT),
-		LIT(output_base), LIT(output_base))
-
-  || system_exec_command_line_app("llvm-opt",
-		"\"%.*sbin/opt\" \"%.*s_memcpy_pass.bc\" -o \"%.*s.bc\" %.*s "
-		"",
-		LIT(build_context.ODIN_ROOT),
-		LIT(output_base), LIT(output_base),
-		LIT(build_context.opt_flags));
-#else
-	// NOTE(zangent): This is separate because it seems that LLVM tools are packaged
-	//   with the Windows version, while they will be system-provided on MacOS and GNU/Linux
-
-  return system_exec_command_line_app("llvm-opt",
-    "opt \"%.*s.ll\" -o \"%.*s_memcpy_pass.bc\" -memcpyopt"
-    "",
-    LIT(output_base), LIT(output_base))
-
-	|| system_exec_command_line_app("llvm-opt",
-		"opt \"%.*s_memcpy_pass.bc\" -o \"%.*s.bc\" %.*s "
-		"",
-		LIT(output_base), LIT(output_base),
-		LIT(build_context.opt_flags));
-#endif
-}
-
-i32 exec_llvm_llc(String output_base) {
-	// For more arguments: http://llvm.org/docs/CommandGuide/llc.html
-#if defined(GB_SYSTEM_WINDOWS)
-	return system_exec_command_line_app("llvm-llc",
-		"\"%.*sbin\\llc\" \"%.*s.bc\" -filetype=obj -O%d "
-		"-o \"%.*s.obj\" "
-		"%.*s"
-		"",
-		LIT(build_context.ODIN_ROOT),
-		LIT(output_base),
-		build_context.optimization_level,
-		LIT(output_base),
-		LIT(build_context.llc_flags));
-#else
-	// NOTE(zangent): Linux / Unix is unfinished and not tested very well.
-	return system_exec_command_line_app("llc",
-		"llc \"%.*s.bc\" -filetype=obj -relocation-model=pic -O%d "
-		"%.*s "
-		"%s%.*s",
-		LIT(output_base),
-		build_context.optimization_level,
-		LIT(build_context.llc_flags),
-		build_context.cross_compiling ? "-mtriple=" : "",
-		cast(int)(build_context.cross_compiling ? build_context.metrics.target_triplet.len : 0),
-		build_context.metrics.target_triplet.text);
-#endif
-}
-
 void print_show_help(String const arg0, String const &command) {
 	print_usage_line(0, "%.*s is a tool for managing Odin source code", LIT(arg0));
 	print_usage_line(0, "Usage");