1; RUN: opt -loop-reduce -S < %s | FileCheck %s 2; 3; PR11356: likely wrong code bug 4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 5target triple = "x86_64-apple-darwin" 6 7@g_66 = global [1 x i32] zeroinitializer, align 4 8@g_775 = global i32 0, align 4 9@g_752 = global i32 0, align 4 10@g_3 = global i32 0, align 4 11 12; Ensure that %div.i.i.us is not hoisted. 13; CHECK-LABEL: @main( 14; CHECK: for.body.i.i.us: 15; CHECK: %div.i.i.i.us 16; CHECK: %cmp5.i.i.us 17define i32 @main() nounwind uwtable ssp { 18entry: 19 %l_2 = alloca [1 x i32], align 4 20 store i32 0, ptr %l_2, align 4 21 %tmp = load i32, ptr @g_3, align 4 22 %idxprom = sext i32 %tmp to i64 23 %arrayidx1 = getelementptr inbounds [1 x i32], ptr %l_2, i64 0, i64 %idxprom 24 %tmp1 = load i32, ptr %arrayidx1, align 4 25 %conv.i.i = and i32 %tmp1, 65535 26 %tobool.i.i.i = icmp ne i32 %tmp, 0 27 br label %codeRepl 28 29codeRepl.loopexit.us-lcssa: ; preds = %for.body.i.i, %codeRepl5 30 br label %codeRepl.loopexit 31 32codeRepl.loopexit: ; preds = %codeRepl.loopexit.us-lcssa.us, %codeRepl.loopexit.us-lcssa 33 br label %codeRepl 34 35codeRepl: ; preds = %codeRepl.loopexit, %entry 36 br i1 %tobool.i.i.i, label %codeRepl.split.us, label %codeRepl.codeRepl.split_crit_edge 37 38codeRepl.codeRepl.split_crit_edge: ; preds = %codeRepl 39 br label %codeRepl.split 40 41codeRepl.split.us: ; preds = %codeRepl 42 br label %for.cond.i.i.us 43 44for.cond.i.i.us: ; preds = %for.inc.i.i.us, %codeRepl.split.us 45 %tmp2 = phi i32 [ 0, %codeRepl.split.us ], [ %add.i.i.us, %for.inc.i.i.us ] 46 br label %codeRepl5.us 47 48for.inc.i.i.us: ; preds = %for.body.i.i.us 49 %add.i.i.us = add nsw i32 %tmp2, 1 50 store i32 %add.i.i.us, ptr @g_752, align 4 51 br label %for.cond.i.i.us 52 53for.body.i.i.us: ; preds = %codeRepl5.us 54 %div.i.i.i.us = udiv i32 1, %conv.i.i 55 %cmp5.i.i.us = icmp eq i32 %div.i.i.i.us, %tmp2 56 br i1 %cmp5.i.i.us, label %codeRepl.loopexit.us-lcssa.us, label %for.inc.i.i.us 57 58codeRepl5.us: ; preds = %for.cond.i.i.us 59 br i1 true, label %codeRepl.loopexit.us-lcssa.us, label %for.body.i.i.us 60 61codeRepl.loopexit.us-lcssa.us: ; preds = %codeRepl5.us, %for.body.i.i.us 62 br label %codeRepl.loopexit 63 64codeRepl.split: ; preds = %codeRepl.codeRepl.split_crit_edge 65 br label %for.cond.i.i 66 67for.cond.i.i: ; preds = %for.inc.i.i, %codeRepl.split 68 %tmp3 = phi i32 [ 0, %codeRepl.split ], [ %add.i.i, %for.inc.i.i ] 69 br label %codeRepl5 70 71codeRepl5: ; preds = %for.cond.i.i 72 br i1 true, label %codeRepl.loopexit.us-lcssa, label %for.body.i.i 73 74for.body.i.i: ; preds = %codeRepl5 75 %cmp5.i.i = icmp eq i32 0, %tmp3 76 br i1 %cmp5.i.i, label %codeRepl.loopexit.us-lcssa, label %for.inc.i.i 77 78for.inc.i.i: ; preds = %for.body.i.i 79 %add.i.i = add nsw i32 %tmp3, 1 80 store i32 %add.i.i, ptr @g_752, align 4 81 br label %for.cond.i.i 82 83func_4.exit: ; No predecessors! 84 ret i32 0 85} 86