From 64c1e1803311610e359e26a5f0ece867f0dabd3e Mon Sep 17 00:00:00 2001 From: Rafael Espindola Date: Tue, 3 Jun 2014 02:41:57 +0000 Subject: Allow alias to point to an arbitrary ConstantExpr. This patch changes GlobalAlias to point to an arbitrary ConstantExpr and it is up to MC (or the system assembler) to decide if that expression is valid or not. This reduces our ability to diagnose invalid uses and how early we can spot them, but it also lets us do things like @test5 = alias inttoptr(i32 sub (i32 ptrtoint (i32* @test2 to i32), i32 ptrtoint (i32* @bar to i32)) to i32*) An important implication of this patch is that the notion of aliased global doesn't exist any more. The alias has to encode the information needed to access it in its metadata (linkage, visibility, type, etc). Another consequence to notice is that getSection has to return a "const char *". It could return a NullTerminatedStringRef if there was such a thing, but when that was proposed the decision was to just uses "const char*" for that. llvm-svn: 210062 --- llvm/lib/Transforms/Utils/CloneModule.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'llvm/lib/Transforms/Utils') diff --git a/llvm/lib/Transforms/Utils/CloneModule.cpp b/llvm/lib/Transforms/Utils/CloneModule.cpp index eb67db1f85d..3f75b3e677e 100644 --- a/llvm/lib/Transforms/Utils/CloneModule.cpp +++ b/llvm/lib/Transforms/Utils/CloneModule.cpp @@ -107,7 +107,7 @@ Module *llvm::CloneModule(const Module *M, ValueToValueMapTy &VMap) { for (Module::const_alias_iterator I = M->alias_begin(), E = M->alias_end(); I != E; ++I) { GlobalAlias *GA = cast(VMap[I]); - if (const GlobalObject *C = I->getAliasee()) + if (const Constant *C = I->getAliasee()) GA->setAliasee(cast(MapValue(C, VMap))); } -- cgit v1.2.3