--- /dev/null
+;; The bitcast cannot be eliminated because byval arguments need
+;; the correct type, or at least a type of the correct size.
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep bitcast
+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-f80:128:128"
+target triple = "i386-apple-darwin9"
+ %struct.NSRect = type { [4 x float] }
+
+define void @foo(i8* %context) nounwind {
+entry:
+ %context_addr = alloca i8* ; <i8**> [#uses=2]
+ %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
+ store i8* %context, i8** %context_addr
+ %tmp = load i8** %context_addr, align 4 ; <i8*> [#uses=1]
+ %tmp1 = bitcast i8* %tmp to %struct.NSRect* ; <%struct.NSRect*> [#uses=1]
+ call void (i32, ...)* @bar( i32 3, %struct.NSRect* byval align 4 %tmp1 ) nounwind
+ br label %return
+return: ; preds = %entry
+ ret void
+}
+
+declare void @bar(i32, ...)