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

[llvm-project.git] / llvm / test / Transforms / LICM / 2003-12-11-SinkingToPHI.ll

; RUN: opt < %s -licm | lli -jit-kind=mcjit -force-interpreter

define i32 @main() {
entry:
        br label %Loop
Loop:           ; preds = %LoopCont, %entry
        br i1 true, label %LoopCont, label %Out
LoopCont:               ; preds = %Loop
        %X = add i32 1, 0               ; <i32> [#uses=1]
        br i1 true, label %Out, label %Loop
Out:            ; preds = %LoopCont, %Loop
        %V = phi i32 [ 2, %Loop ], [ %X, %LoopCont ]            ; <i32> [#uses=1]
        %V2 = sub i32 %V, 1             ; <i32> [#uses=1]
        ret i32 %V2
}