llvm-6502/test/Transforms/LoopStrengthReduce/share_ivs.ll

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; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | grep phi | wc -l | grep 1
; This testcase should have ONE stride 18 indvar, the other use should have a
; loop invariant value (B) added to it inside of the loop, instead of having
; a whole indvar based on B for it.
declare bool %cond(uint)
void %test(uint %B) {
br label %Loop
Loop:
%IV = phi uint [0, %0], [%IVn, %Loop]
%C = mul uint %IV, 18
%D = mul uint %IV, 18
%E = add uint %D, %B
%cnd = call bool %cond(uint %E)
call bool %cond(uint %C)
%IVn = add uint %IV, 1
br bool %cnd, label %Loop, label %Out
Out:
ret void
}