llvm-project/llvm/test/Transforms/IndVarSimplify/loop_evaluate_1.ll

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; RUN: opt < %s -indvars -loop-deletion -simplifycfg -S | not grep br
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;
; Testcase distilled from 256.bzip2
define i32 @main() {
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entry:
br label %loopentry
loopentry: ; preds = %loopentry, %entry
%indvar1 = phi i32 [ 0, %entry ], [ %indvar.next2, %loopentry ] ; <i32> [#uses=1]
%h.0 = phi i32 [ %tmp.2, %loopentry ], [ 4, %entry ] ; <i32> [#uses=1]
%tmp.1 = mul i32 %h.0, 3 ; <i32> [#uses=1]
%tmp.2 = add i32 %tmp.1, 1 ; <i32> [#uses=2]
%indvar.next2 = add i32 %indvar1, 1 ; <i32> [#uses=2]
%exitcond3 = icmp ne i32 %indvar.next2, 4 ; <i1> [#uses=1]
br i1 %exitcond3, label %loopentry, label %loopexit
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loopexit: ; preds = %loopentry
ret i32 %tmp.2
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}