1 ; With sub reassociation, constant folding can eliminate all of the constants. 2 ; 3 ; RUN: opt < %s -reassociate -constprop -instcombine -dce -S | not grep add 4 5 define i32 @test(i32 %A, i32 %B) { 6 %W = add i32 5, %B ; <i32> [#uses=1] 7 %X = add i32 -7, %A ; <i32> [#uses=1] 8 %Y = sub i32 %X, %W ; <i32> [#uses=1] 9 %Z = add i32 %Y, 12 ; <i32> [#uses=1] 10 ret i32 %Z 11 } 12 13
