From 65b0b2bf2863256acedd59222ca063ee89ad95b4 Mon Sep 17 00:00:00 2001
From: Mikhail Glushenkov <foldr@codedgers.com>
Date: Tue, 9 Dec 2008 14:40:18 +0000
Subject: [PATCH] Support -emit-llvm properly (with -S and -c).

llvm-svn: 60764
---
 llvm/include/llvm/CompilerDriver/Tools.td | 22 +++++++++++++---------
 llvm/tools/llvmc/plugins/Clang/Clang.td   | 19 ++++++++++++++-----
 2 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/llvm/include/llvm/CompilerDriver/Tools.td b/llvm/include/llvm/CompilerDriver/Tools.td
index 27d49a0d2fe6..b2bb84679ee0 100644
--- a/llvm/include/llvm/CompilerDriver/Tools.td
+++ b/llvm/include/llvm/CompilerDriver/Tools.td
@@ -13,7 +13,7 @@
 
 def OptList : OptionList<[
  (switch_option "emit-llvm",
-    (help "Emit LLVM bitcode files instead of native object files")),
+    (help "Emit LLVM .ll files instead of native object files")),
  (switch_option "E",
     (help "Stop after the preprocessing stage, do not run the compiler")),
  (switch_option "fsyntax-only",
@@ -42,7 +42,7 @@ def OptList : OptionList<[
     (help "Pass options to linker"))
 ]>;
 
-class llvm_gcc_based <string cmd_prefix, string in_lang> : Tool<
+class llvm_gcc_based <string cmd_prefix, string in_lang, string E_ext> : Tool<
 [(in_language in_lang),
  (out_language "llvm-bitcode"),
  (output_suffix "bc"),
@@ -54,23 +54,27 @@ class llvm_gcc_based <string cmd_prefix, string in_lang> : Tool<
                     !strconcat(cmd_prefix, " -E $INFILE")),
             (switch_on "fsyntax-only"),
               !strconcat(cmd_prefix, " -fsyntax-only $INFILE"),
+            (and (switch_on "S"), (switch_on "emit-llvm")),
+              !strconcat(cmd_prefix, " -S $INFILE -o $OUTFILE -emit-llvm"),
             (default),
               !strconcat(cmd_prefix, " -c $INFILE -o $OUTFILE -emit-llvm"))),
  (actions
      (case
-         (switch_on "emit-llvm"), (stop_compilation),
-         (switch_on "E"), [(stop_compilation), (output_suffix "i")],
-         (switch_on "S"), (stop_compilation),
+         (switch_on "E"), [(stop_compilation), (output_suffix E_ext)],
+         (and (switch_on "emit-llvm"), (switch_on "S")),
+              [(output_suffix "ll"), (stop_compilation)],
+         (and (switch_on "emit-llvm"), (switch_on "c")), (stop_compilation),
          (switch_on "fsyntax-only"), (stop_compilation),
          (not_empty "include"), (forward "include"),
          (not_empty "I"), (forward "I"))),
  (sink)
 ]>;
 
-def llvm_gcc_c : llvm_gcc_based<"llvm-gcc -x c", "c">;
-def llvm_gcc_cpp : llvm_gcc_based<"llvm-g++ -x c++", "c++">;
-def llvm_gcc_m : llvm_gcc_based<"llvm-gcc -x objective-c", "objective-c">;
-def llvm_gcc_mxx : llvm_gcc_based<"llvm-gcc -x objective-c++", "objective-c++">;
+def llvm_gcc_c : llvm_gcc_based<"llvm-gcc -x c", "c", "i">;
+def llvm_gcc_cpp : llvm_gcc_based<"llvm-g++ -x c++", "c++", "i">;
+def llvm_gcc_m : llvm_gcc_based<"llvm-gcc -x objective-c", "objective-c", "mi">;
+def llvm_gcc_mxx : llvm_gcc_based<"llvm-gcc -x objective-c++",
+                                  "objective-c++", "mi">;
 
 def opt : Tool<
 [(in_language "llvm-bitcode"),
diff --git a/llvm/tools/llvmc/plugins/Clang/Clang.td b/llvm/tools/llvmc/plugins/Clang/Clang.td
index 3856f99abe16..a179c53f74f6 100644
--- a/llvm/tools/llvmc/plugins/Clang/Clang.td
+++ b/llvm/tools/llvmc/plugins/Clang/Clang.td
@@ -1,15 +1,20 @@
 // A replacement for the Clang's ccc script.
 // Depends on the Base plugin.
 // To compile, use this command:
+//
 //    cd $LLVMC2_DIR
 //    make DRIVER_NAME=ccc2 BUILTIN_PLUGINS=Clang
+//
+// Or just use the default llvmc, which now has this plugin enabled.
 
 include "llvm/CompilerDriver/Common.td"
 
 def Priority : PluginPriority<1>;
 
 def Options : OptionList<[
+// Extern options
 (switch_option "E", (extern)),
+(switch_option "S", (extern)),
 (switch_option "c", (extern)),
 (switch_option "fsyntax-only", (extern)),
 (switch_option "emit-llvm", (extern)),
@@ -20,6 +25,7 @@ def Options : OptionList<[
 (parameter_list_option "l", (extern)),
 (prefix_list_option "Wa,", (extern)),
 (prefix_list_option "Wl,", (extern)),
+
 (switch_option "clang", (help "Use Clang instead of llvm-gcc"))
 ]>;
 
@@ -34,15 +40,17 @@ class clang_based<string language, string cmd, string ext_E> : Tool<
                 !strconcat(cmd, " -E $INFILE -o $OUTFILE"),
                 (default),
                 !strconcat(cmd, " -E $INFILE")),
-          (switch_on "c"),
-          !strconcat(cmd, " -fsyntax-only $INFILE"),
+          (and (switch_on "S"), (switch_on "emit-llvm")),
+          !strconcat(cmd, " -emit-llvm $INFILE -o $OUTFILE"),
           (default),
           !strconcat(cmd, " -emit-llvm-bc $INFILE -o $OUTFILE"))),
  (actions (case (switch_on "E"),
                 [(stop_compilation), (output_suffix ext_E)],
-                (switch_on "c"), (stop_compilation),
                 (switch_on "fsyntax-only"), (stop_compilation),
-                (switch_on "emit-llvm"), (stop_compilation),
+                (and (switch_on "S"), (switch_on "emit-llvm")),
+                           [(stop_compilation), (output_suffix "ll")],
+                (and (switch_on "c"), (switch_on "emit-llvm")),
+                           (stop_compilation),
                 (not_empty "include"), (forward "include"),
                 (not_empty "I"), (forward "I"))),
  (sink)
@@ -60,7 +68,8 @@ def as : Tool<
  (out_language "object-code"),
  (output_suffix "o"),
  (cmd_line "as $INFILE -o $OUTFILE"),
- (actions (case (not_empty "Wa,"), (unpack_values "Wa,")))
+ (actions (case (not_empty "Wa,"), (unpack_values "Wa,"),
+                (switch_on "c"), (stop_compilation)))
 ]>;
 
 // Default linker