llvm-6502/test/Transforms/LICM/sink_inst.ll

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; If the result of an instruction is only used outside of the loop, sink
; the instruction to the exit blocks instead of executing it on every
; iteration of the loop.
;
; RUN: llvm-as < %s | opt -licm | llvm-dis | grep -C1 mul | grep Out:
int %test(int %N) {
Entry:
br label %Loop
Loop:
%N_addr.0.pn = phi int [ %dec, %Loop ], [ %N, %Entry ]
%tmp.6 = mul int %N, %N_addr.0.pn
%tmp.7 = sub int %tmp.6, %N
%dec = add int %N_addr.0.pn, -1
%tmp.1 = setne int %N_addr.0.pn, 1
br bool %tmp.1, label %Loop, label %Out
Out:
ret int %tmp.7
}