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| ; RUN: opt -loop-unroll -loop-simplify -S < %s | FileCheck %s
; This test is one of the tests of PR33494. Its compilation takes
; excessive time if we don't mark visited nodes while looking for
; constants in SCEV expression trees.
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define void @test_01(i32* nocapture %a) local_unnamed_addr {
; CHECK-LABEL: @test_01(
entry:
%arrayidx = getelementptr inbounds i32, i32* %a, i64 96
%arrayidx.promoted51 = load i32, i32* %arrayidx, align 1
br label %while.body
while.body: ; preds = %entry, %while.end29
%0 = phi i32 [ %arrayidx.promoted51, %entry ], [ %7, %while.end29 ]
%cmp46 = icmp eq i32 %0, 1
%conv47 = zext i1 %cmp46 to i32
%1 = add i32 %0, 1
%2 = icmp ult i32 %1, 3
%div48 = select i1 %2, i32 %0, i32 0
%cmp349 = icmp sgt i32 %div48, %conv47
br i1 %cmp349, label %while.body4.lr.ph, label %while.end29
while.body4.lr.ph: ; preds = %while.body
br label %while.body4
while.body4: ; preds = %while.body4.lr.ph, %while.end28
%3 = phi i32 [ %0, %while.body4.lr.ph ], [ %mul17.lcssa, %while.end28 ]
br label %while.body13
while.body13: ; preds = %while.body4, %while.end.split
%mul1745 = phi i32 [ %3, %while.body4 ], [ %mul17, %while.end.split ]
%4 = phi i32 [ 15872, %while.body4 ], [ %add, %while.end.split ]
%mul = mul nsw i32 %mul1745, %mul1745
%mul17 = mul nsw i32 %mul, %mul1745
%cmp22 = icmp eq i32 %4, %mul17
br i1 %cmp22, label %while.body13.split, label %while.end.split
while.body13.split: ; preds = %while.body13
br label %while.cond19
while.cond19: ; preds = %while.cond19, %while.body13.split
br label %while.cond19
while.end.split: ; preds = %while.body13
%add = shl nsw i32 %4, 1
%tobool12 = icmp eq i32 %add, 0
br i1 %tobool12, label %while.end28, label %while.body13
while.end28: ; preds = %while.end.split
%add.lcssa = phi i32 [ %add, %while.end.split ]
%mul17.lcssa = phi i32 [ %mul17, %while.end.split ]
%cmp = icmp eq i32 %mul17.lcssa, 1
%conv = zext i1 %cmp to i32
%5 = add i32 %mul17.lcssa, 1
%6 = icmp ult i32 %5, 3
%div = select i1 %6, i32 %mul17.lcssa, i32 0
%cmp3 = icmp sgt i32 %div, %conv
br i1 %cmp3, label %while.body4, label %while.cond1.while.end29_crit_edge
while.cond1.while.end29_crit_edge: ; preds = %while.end28
%.lcssa = phi i32 [ %mul17.lcssa, %while.end28 ]
%add.lcssa50.lcssa = phi i32 [ %add.lcssa, %while.end28 ]
store i32 %add.lcssa50.lcssa, i32* %a, align 4
br label %while.end29
while.end29: ; preds = %while.cond1.while.end29_crit_edge, %while.body
%7 = phi i32 [ %.lcssa, %while.cond1.while.end29_crit_edge ], [ %0, %while.body ]
br label %while.body
}
|