commit a249511191c846e40fd191ff478b81c2a2a53626
author Bill Wendling <isanbard@gmail.com> Wed Sep 12 18:55:13 2007 +0000
committer Bill Wendling <isanbard@gmail.com> Wed Sep 12 18:55:13 2007 +0000
tree c0f74dc5e45982ff9424d7bb051d201ad89d1e36
parent a74d7688eecdc1cce24151ef3cf8c5ca4b0db2b1

Alias definitions aren't supported on some platforms. Create a flag (TARGET_DOES_NOT_SUPPORT_ALIAS_DEFINITIONS) that indicates this and stops us from creating aliases.

llvm-svn: 41882

llvm-gcc-4.0/gcc/config/darwin.h

diff --git a/llvm-gcc-4.0/gcc/config/darwin.h b/llvm-gcc-4.0/gcc/config/darwin.h
index 1a2e77e..950b18d 100644
--- a/llvm-gcc-4.0/gcc/config/darwin.h
+++ b/llvm-gcc-4.0/gcc/config/darwin.h
@@ -674,6 +674,9 @@
   } while (0)
 
 /* APPLE LOCAL begin LLVM */
+/* As in the warning above, alias definitions aren't supported on Mach-O. */
+#define TARGET_DOES_NOT_SUPPORT_ALIAS_DEFINITIONS
+
 /* weak_import, a Darwin special, does not make function definitions weak. */
 #define TARGET_ADJUST_LLVM_LINKAGE(FN, DECL)                            \
   do {                                                                  \

llvm-gcc-4.0/gcc/llvm-backend.cpp

diff --git a/llvm-gcc-4.0/gcc/llvm-backend.cpp b/llvm-gcc-4.0/gcc/llvm-backend.cpp
index b605cfb..033fbcb 100644
--- a/llvm-gcc-4.0/gcc/llvm-backend.cpp
+++ b/llvm-gcc-4.0/gcc/llvm-backend.cpp
@@ -677,7 +677,7 @@
   else if (Function *F = dyn_cast<Function>(V))
     F->eraseFromParent();
   else
-    assert(0 && "Unsuported global value");
+    assert(0 && "Unsupported global value");
 
   TREE_ASM_WRITTEN(decl) = 1;
   

llvm-gcc-4.0/gcc/varasm.c

diff --git a/llvm-gcc-4.0/gcc/varasm.c b/llvm-gcc-4.0/gcc/varasm.c
index 25c9ab6..1d8f265 100644
--- a/llvm-gcc-4.0/gcc/varasm.c
+++ b/llvm-gcc-4.0/gcc/varasm.c
@@ -4762,7 +4762,12 @@
     {
       tree target_decl;
       target_decl = find_decl_and_mark_needed (p->decl, p->target);
+#ifdef TARGET_DOES_NOT_SUPPORT_ALIAS_DEFINITIONS
+      if (target_decl)
+        warning ("%Jalias definitions not supported; ignored", target_decl);
+#else
       emit_alias_to_llvm(p->decl, p->target, target_decl);
+#endif
     }
 #else  
     do_assemble_alias (p->decl, p->target);
@@ -4819,11 +4824,19 @@
      alias.  This saves a tad o memory.  */
   target_decl = find_decl_and_mark_needed (decl, target);
   if (target_decl && TREE_ASM_WRITTEN (target_decl))
+    /* APPLE LOCAL begin LLVM */
+    {
 #ifdef ENABLE_LLVM
-    emit_alias_to_llvm(decl, target, target_decl);
+#ifdef TARGET_DOES_NOT_SUPPORT_ALIAS_DEFINITIONS
+      warning ("%Jalias definitions not supported; ignored", target_decl);
 #else
-  do_assemble_alias (decl, target);
+      emit_alias_to_llvm(decl, target, target_decl);
 #endif
+#else
+      do_assemble_alias (decl, target);
+#endif
+    }
+    /* APPLE LOCAL end LLVM */
   else
     {
       alias_pair p;