rename --enable-timing-info to -ftime-report to match clang

and have it print llvm's internal timing info

src/all_types.hpp

@@ -1727,6 +1727,7 @@ struct CodeGen {
     bool error_during_imports;
     bool generate_error_name_table;
     bool enable_cache;
+    bool enable_time_report;
 
     //////////////////////////// Participates in Input Parameter Cache Hash
     ZigList<LinkLib *> link_libs_list;

src/codegen.cpp

@@ -6398,7 +6398,8 @@ static void zig_llvm_emit_output(CodeGen *g) {
     switch (g->emit_file_type) {
         case EmitFileTypeBinary:
             if (ZigLLVMTargetMachineEmitToFile(g->target_machine, g->module, buf_ptr(output_path),
-                        ZigLLVM_EmitBinary, &err_msg, g->build_mode == BuildModeDebug, is_small))
+                        ZigLLVM_EmitBinary, &err_msg, g->build_mode == BuildModeDebug, is_small,
+                        g->enable_time_report))
             {
                 zig_panic("unable to write object file %s: %s", buf_ptr(output_path), err_msg);
             }
@@ -6408,7 +6409,8 @@ static void zig_llvm_emit_output(CodeGen *g) {
 
         case EmitFileTypeAssembly:
             if (ZigLLVMTargetMachineEmitToFile(g->target_machine, g->module, buf_ptr(output_path),
-                        ZigLLVM_EmitAssembly, &err_msg, g->build_mode == BuildModeDebug, is_small))
+                        ZigLLVM_EmitAssembly, &err_msg, g->build_mode == BuildModeDebug, is_small,
+                        g->enable_time_report))
             {
                 zig_panic("unable to write assembly file %s: %s", buf_ptr(output_path), err_msg);
             }
@@ -6417,7 +6419,8 @@ static void zig_llvm_emit_output(CodeGen *g) {
 
         case EmitFileTypeLLVMIr:
             if (ZigLLVMTargetMachineEmitToFile(g->target_machine, g->module, buf_ptr(output_path),
-                        ZigLLVM_EmitLLVMIr, &err_msg, g->build_mode == BuildModeDebug, is_small))
+                        ZigLLVM_EmitLLVMIr, &err_msg, g->build_mode == BuildModeDebug, is_small,
+                        g->enable_time_report))
             {
                 zig_panic("unable to write llvm-ir file %s: %s", buf_ptr(output_path), err_msg);
             }

src/main.cpp

@@ -37,7 +37,7 @@ static int usage(const char *arg0) {
         "  --cache [auto|off|on]        build to the global cache and print output path to stdout\n"
         "  --color [auto|off|on]        enable or disable colored error messages\n"
         "  --emit [asm|bin|llvm-ir]     emit a specific file format as compilation output\n"
-        "  --enable-timing-info         print timing diagnostics\n"
+        "  -ftime-report                print timing diagnostics\n"
         "  --libc-include-dir [path]    directory where libc stdlib.h resides\n"
         "  --name [name]                override output name\n"
         "  --output [file]              override destination path\n"
@@ -402,6 +402,7 @@ int main(int argc, char **argv) {
         os_path_join(special_dir, buf_create_from_str("build_runner.zig"), build_runner_path);
 
         CodeGen *g = codegen_create(build_runner_path, nullptr, OutTypeExe, BuildModeDebug, zig_lib_dir_buf);
+        g->enable_time_report = timing_info;
         buf_init_from_str(&g->cache_dir, cache_dir);
         codegen_set_out_name(g, buf_create_from_str("build"));
 
@@ -533,7 +534,7 @@ int main(int argc, char **argv) {
                 no_rosegment_workaround = true;
             } else if (strcmp(arg, "--each-lib-rpath") == 0) {
                 each_lib_rpath = true;
-            } else if (strcmp(arg, "--enable-timing-info") == 0) {
+            } else if (strcmp(arg, "-ftime-report") == 0) {
                 timing_info = true;
             } else if (strcmp(arg, "--test-cmd-bin") == 0) {
                 test_exec_args.append(nullptr);
@@ -828,6 +829,7 @@ int main(int argc, char **argv) {
             Buf *zig_lib_dir_buf = resolve_zig_lib_dir();
 
             CodeGen *g = codegen_create(zig_root_source_file, target, out_type, build_mode, zig_lib_dir_buf);
+            g->enable_time_report = timing_info;
             buf_init_from_str(&g->cache_dir, cache_dir);
             codegen_set_out_name(g, buf_out_name);
             codegen_set_lib_version(g, ver_major, ver_minor, ver_patch);

src/zig_llvm.cpp

@@ -30,6 +30,7 @@
 #include <llvm/PassRegistry.h>
 #include <llvm/Support/FileSystem.h>
 #include <llvm/Support/TargetParser.h>
+#include <llvm/Support/Timer.h>
 #include <llvm/Support/raw_ostream.h>
 #include <llvm/Target/TargetMachine.h>
 #include <llvm/Transforms/Coroutines.h>
@@ -81,8 +82,11 @@ static const bool assertions_on = false;
 #endif
 
 bool ZigLLVMTargetMachineEmitToFile(LLVMTargetMachineRef targ_machine_ref, LLVMModuleRef module_ref,
-        const char *filename, ZigLLVM_EmitOutputType output_type, char **error_message, bool is_debug, bool is_small)
+        const char *filename, ZigLLVM_EmitOutputType output_type, char **error_message, bool is_debug,
+        bool is_small, bool time_report)
 {
+    TimePassesIsEnabled = time_report;
+
     std::error_code EC;
     raw_fd_ostream dest(filename, EC, sys::fs::F_None);
     if (EC) {
@@ -182,6 +186,9 @@ bool ZigLLVMTargetMachineEmitToFile(LLVMTargetMachineRef targ_machine_ref, LLVMM
         }
     }
 
+    if (time_report) {
+        TimerGroup::printAll(errs());
+    }
     return false;
 }
 

src/zig_llvm.h

@@ -55,7 +55,8 @@ enum ZigLLVM_EmitOutputType {
 };
 
 ZIG_EXTERN_C bool ZigLLVMTargetMachineEmitToFile(LLVMTargetMachineRef targ_machine_ref, LLVMModuleRef module_ref,
-        const char *filename, enum ZigLLVM_EmitOutputType output_type, char **error_message, bool is_debug, bool is_small);
+        const char *filename, enum ZigLLVM_EmitOutputType output_type, char **error_message, bool is_debug,
+        bool is_small, bool time_report);
 
 ZIG_EXTERN_C LLVMTypeRef ZigLLVMTokenTypeInContext(LLVMContextRef context_ref);