Simplify internalize pass. Add test case.

Patch by Matthijs Kooijman!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51114 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/Internalize/2008-05-09-AllButMain.ll

@@ -0,0 +1,27 @@
+; No arguments means internalize all but main
+; RUN: llvm-as < %s | opt -internalize | llvm-dis | grep internal | count 4
+; Internalize all but foo and j
+; RUN: llvm-as < %s | opt -internalize -internalize-public-api-list foo -internalize-public-api-list j | llvm-dis | grep internal | count 3
+; Non existent files should be treated as if they were empty (so internalize all but main)
+; RUN: llvm-as < %s | opt -internalize -internalize-public-api-file /nonexistent/file | llvm-dis | grep internal | count 4
+; RUN: llvm-as < %s | opt -internalize -internalize-public-api-list bar -internalize-public-api-list foo -internalize-public-api-file /nonexistent/file | llvm-dis | grep internal | count 3
+; -file and -list options should be merged, the .apifile contains foo and j
+; RUN: llvm-as < %s | opt -internalize -internalize-public-api-list bar -internalize-public-api-file %s.apifile | llvm-dis | grep internal | count 2
+
+@i = weak global i32 0          ; <i32*> [#uses=0]
+@j = weak global i32 0          ; <i32*> [#uses=0]
+
+define void @main(...) {
+entry:  
+        ret void
+}
+
+define void @foo(...) {
+entry:  
+        ret void
+}
+
+define void @bar(...) {
+entry:  
+        ret void
+}

test/Transforms/Internalize/2008-05-09-AllButMain.ll.apifile

@@ -0,0 +1,2 @@
+foo
+j

test/Transforms/Internalize/dg.exp

@@ -0,0 +1,3 @@
+load_lib llvm.exp
+
+RunLLVMTests [lsort [glob -nocomplain $srcdir/$subdir/*.{ll,llx,c,cpp,tr}]]