; Instcombine was missing a test that caused it to make illegal transformations ; sometimes. In this case, it transforms the sub into an add: ; RUN: echo foo ; RUN: as < %s | opt -instcombine | dis | not grep add ; int "test"(int %i, int %j) { %A = mul int %i, %j %B = sub int 2, %A ret int %B }