Added '-Hkeep-all-bodies' switch.

The same behavior is triggered by the '-inline' switch for
DMD, but this doesn't quite translate to LDC.

dmd2/func.c

@@ -1948,7 +1948,13 @@ void FuncDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
             bodyToCBuffer(buf, hgs);
             hgs->autoMember--;
         }
-        else if(hgs->tpltMember == 0 && global.params.useInline == 0)
+        else if(hgs->tpltMember == 0 &&
+#if IN_LLVM
+            !global.params.hdrKeepAllBodies
+#else
+            global.params.useInline == 0
+#endif
+        )
             buf->writestring(";");
         else
             bodyToCBuffer(buf, hgs);
@@ -2022,7 +2028,13 @@ int FuncDeclaration::equals(Object *o)
 
 void FuncDeclaration::bodyToCBuffer(OutBuffer *buf, HdrGenState *hgs)
 {
-    if (fbody && (!hgs->hdrgen || global.params.useInline || hgs->autoMember || hgs->tpltMember))
+    if (fbody && (!hgs->hdrgen ||
+#if IN_LLVM
+        global.params.hdrKeepAllBodies ||
+#else
+        global.params.useInline ||
+#endif
+        hgs->autoMember || hgs->tpltMember))
     {
         int savetlpt = hgs->tpltMember;
         int saveauto = hgs->autoMember;

dmd2/mars.h

@@ -282,6 +282,11 @@ struct Param
     char *exefile;
     char *mapfile;
 #if IN_LLVM
+    // Whether to keep all function bodies in .di file generation or to strip
+    // those of plain functions. For DMD, this is govenered by the -inline
+    // flag, which does not directly translate to LDC.
+    bool hdrKeepAllBodies;
+
     // LDC stuff
     OUTPUTFLAG output_ll;
     OUTPUTFLAG output_bc;