diff gen/toobj.cpp @ 1052:12ea38902e83

Add '-singleobj' command line switch that will tell LDC to link LLVM modules internally and only emit a single object file. The switch allows the optimizer and inliner to run on all modules at once and opens the door for template instantiation improvements that should lower compile time and executable size.
author Christian Kamm <kamm incasoftware de>
date Sat, 07 Mar 2009 19:38:00 +0100
parents f756c47f310a
children b9f9bde1707e
line wrap: on
line diff
--- a/gen/toobj.cpp	Sat Mar 07 14:25:30 2009 +0100
+++ b/gen/toobj.cpp	Sat Mar 07 19:38:00 2009 +0100
@@ -70,7 +70,7 @@
 
 //////////////////////////////////////////////////////////////////////////////////////////
 
-void Module::genobjfile(int multiobj)
+llvm::Module* Module::genLLVMModule(int multiobj)
 {
     bool logenabled = Logger::enabled();
     if (llvmForceLogging && !logenabled)
@@ -85,9 +85,6 @@
 
     assert(!global.errors);
 
-    // start by deleting the old object file
-    deleteObjFile();
-
     // name the module
     std::string mname(toChars());
     if (md != 0)
@@ -174,17 +171,29 @@
         }
     }
 
+    gIR = NULL;
+    
+    if (llvmForceLogging && !logenabled)
+    {
+        Logger::disable();
+    }
+    
+    return ir.module;
+}
+
+void writeModule(llvm::Module* m, std::string filename)
+{
     // run optimizer
-    ldc_optimize_module(ir.module, global.params.optimizeLevel, global.params.llvmInline);
+    ldc_optimize_module(m, global.params.optimizeLevel, global.params.llvmInline);
 
     // verify the llvm
     if (!noVerify && (global.params.optimizeLevel >= 0 || global.params.llvmInline)) {
         std::string verifyErr;
         Logger::println("Verifying module... again...");
         LOG_SCOPE;
-        if (llvm::verifyModule(*ir.module,llvm::ReturnStatusAction,&verifyErr))
+        if (llvm::verifyModule(*m,llvm::ReturnStatusAction,&verifyErr))
         {
-            error("%s", verifyErr.c_str());
+            //error("%s", verifyErr.c_str());
             fatal();
         }
         else {
@@ -197,27 +206,27 @@
 
     // write LLVM bitcode
     if (global.params.output_bc) {
-        LLPath bcpath = LLPath(objfile->name->toChars());
+        LLPath bcpath = LLPath(filename);
         bcpath.eraseSuffix();
         bcpath.appendSuffix(std::string(global.bc_ext));
         Logger::println("Writing LLVM bitcode to: %s\n", bcpath.c_str());
         std::ofstream bos(bcpath.c_str(), std::ios::binary);
-        llvm::WriteBitcodeToFile(ir.module, bos);
+        llvm::WriteBitcodeToFile(m, bos);
     }
 
     // write LLVM IR
     if (global.params.output_ll) {
-        LLPath llpath = LLPath(objfile->name->toChars());
+        LLPath llpath = LLPath(filename);
         llpath.eraseSuffix();
         llpath.appendSuffix(std::string(global.ll_ext));
         Logger::println("Writing LLVM asm to: %s\n", llpath.c_str());
         std::ofstream aos(llpath.c_str());
-        ir.module->print(aos, NULL);
+        m->print(aos, NULL);
     }
 
     // write native assembly
     if (global.params.output_s || global.params.output_o) {
-        LLPath spath = LLPath(objfile->name->toChars());
+        LLPath spath = LLPath(filename);
         spath.eraseSuffix();
         spath.appendSuffix(std::string(global.s_ext));
         if (!global.params.output_s) {
@@ -227,12 +236,12 @@
         std::string err;
         {
             llvm::raw_fd_ostream out(spath.c_str(), false, err);
-            write_asm_to_file(*gTargetMachine, *ir.module, out);
+            write_asm_to_file(*gTargetMachine, *m, out);
         }
 
         // call gcc to convert assembly to object file
         if (global.params.output_o) {
-            LLPath objpath = LLPath(objfile->name->toChars());
+            LLPath objpath = LLPath(filename);
             assemble(spath, objpath);
         }
 
@@ -240,14 +249,6 @@
             spath.eraseFromDisk();
         }
     }
-
-    delete ir.module;
-    gIR = NULL;
-    
-    if (llvmForceLogging && !logenabled)
-    {
-        Logger::disable();
-    }
 }
 
 /* ================================================================== */