Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/Transforms/InstCombine/2008-06-19-UncondLoad.ll

@@ -0,0 +1,16 @@
+; RUN: opt < %s -instcombine -S | grep load | count 3
+; PR2471
+
+declare i32 @x(i32*)
+define i32 @b(i32* %a, i32* %b) {
+entry:
+        %tmp1 = load i32, i32* %a            
+        %tmp3 = load i32, i32* %b           
+        %add = add i32 %tmp1, %tmp3   
+        %call = call i32 @x( i32* %a )
+        %tobool = icmp ne i32 %add, 0
+	; not safe to turn into an uncond load
+        %cond = select i1 %tobool, i32* %b, i32* %a             
+        %tmp8 = load i32, i32* %cond       
+        ret i32 %tmp8
+}