llvm-for-llvmta/test/Transforms/LICM/2003-12-11-SinkingToPHI.ll

17 lines
424 B
LLVM

; RUN: opt < %s -licm | lli -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
}