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