properly resolve multilevel function aliases, fixes bug with adding indexing for aliases. also optimize function indexing in compiler

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/cases/aliasbitcast3.ll b/tests/cases/aliasbitcast3.ll
new file mode 100644
index 00000000..4ff969e3
--- /dev/null
+++ b/tests/cases/aliasbitcast3.ll
@@ -0,0 +1,29 @@
+; ModuleID = '/tmp/emscripten/tmp/src.cpp.o'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
+target triple = "i386-pc-linux-gnu"
+
+@.str = private constant [14 x i8] c"hello, world!\00", align 1 ; [#uses=1]
+
+@thriceremoved = alias bitcast (void ()* @twiceremoved to void (i32)*) ; [#uses=1]
+@othername = alias bitcast (void ()* @original to void (i32)*) ; [#uses=1]
+@twiceremoved = alias bitcast (void (i32)* @othername to void ()*) ; [#uses=1]
+
+; [#uses=2]
+define void @original() {
+entry:
+  %0 = call i32 bitcast (i32 (i8*)* @puts to i32 (i32*)*)(i8* getelementptr inbounds ([14 x i8]* @.str, i32 0, i32 0)) ; [#uses=0]
+  br label %return
+
+return:                                           ; preds = %entry
+  ret void
+}
+
+; [#uses=1]
+declare i32 @puts(i8*)
+
+; [#uses=0]
+define i32 @main() {
+entry:
+  call void @thriceremoved()
+  ret i32 0
+}