1 ; With sub reassociation, constant folding can eliminate the uses of %a.
3 ; RUN: opt < %s -reassociate -instcombine -S | grep %a | count 1
6 define i32 @test(i32 %a, i32 %b, i32 %c) nounwind {
8 %tmp3 = sub i32 %a, %b ; <i32> [#uses=1]
9 %tmp5 = sub i32 %tmp3, %c ; <i32> [#uses=1]
10 %tmp7 = sub i32 %tmp5, %a ; <i32> [#uses=1]