[DAGCombiner] Add target hook function to decide folding (mul (add x, c1), c2)

[llvm-project.git] / llvm / test / Transforms / LoopUnroll / 2004-05-13-DontUnrollTooMuch.ll

; RUN: opt < %s -loop-unroll -disable-output

define i32 @main() {
entry:
        br label %no_exit
no_exit:                ; preds = %no_exit, %entry
        %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %no_exit ]             ; <i32> [#uses=1]
        %indvar.next = add i32 %indvar, 1               ; <i32> [#uses=2]
        %exitcond = icmp ne i32 %indvar.next, -2147483648               ; <i1> [#uses=1]
        br i1 %exitcond, label %no_exit, label %loopexit
loopexit:               ; preds = %no_exit
        ret i32 0
}