| ; 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: llvm-as < %s | opt -instcombine | llvm-dis | not grep add | |
| ; | |
| int "test"(int %i, int %j) { | |
| %A = mul int %i, %j | |
| %B = sub int 2, %A | |
| ret int %B | |
| } |