In some rare cases, the register allocator can spill registers but end up not utilizi...

[llvm/msp430.git] / test / Transforms / Reassociate / basictest.ll

; With reassociation, constant folding can eliminate the 12 and -12 constants.
;
; RUN: llvm-as < %s | opt -reassociate -constprop -instcombine -die | llvm-dis | not grep add

define i32 @test(i32 %arg) {
        %tmp1 = sub i32 -12, %arg               ; <i32> [#uses=1]
        %tmp2 = add i32 %tmp1, 12               ; <i32> [#uses=1]
        ret i32 %tmp2
}