1 ; PR1600 2 ; RUN: opt < %s -basicaa -gvn -instcombine -S | \ 3 ; RUN: grep {ret i32 0} 4 ; END. 5 6 declare i16 @llvm.cttz.i16(i16) 7 8 define i32 @test(i32* %P, i16* %Q) { 9 %A = load i16* %Q ; <i16> [#uses=1] 10 %x = load i32* %P ; <i32> [#uses=1] 11 %B = call i16 @llvm.cttz.i16( i16 %A ) ; <i16> [#uses=1] 12 %y = load i32* %P ; <i32> [#uses=1] 13 store i16 %B, i16* %Q 14 %z = sub i32 %x, %y ; <i32> [#uses=1] 15 ret i32 %z 16 } 17 18
