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; PR1600
; RUN: opt < %s -basicaa -gvn -instcombine -S | \
; RUN: grep {ret i32 0}
; END.
declare i16 @llvm.cttz.i16(i16)
define i32 @test(i32* %P, i16* %Q) {
%A = load i16* %Q ; <i16> [#uses=1]
%x = load i32* %P ; <i32> [#uses=1]
%B = call i16 @llvm.cttz.i16( i16 %A ) ; <i16> [#uses=1]
%y = load i32* %P ; <i32> [#uses=1]
store i16 %B, i16* %Q
%z = sub i32 %x, %y ; <i32> [#uses=1]
ret i32 %z
}
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