1 ; RUN: opt -loop-reduce -S < %s | FileCheck %s 2 ; 3 ; PR11356: likely wrong code bug 4 target 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" 5 target 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 17 define i32 @main() nounwind uwtable ssp { 18 entry: 19 %l_2 = alloca [1 x i32], align 4 20 %arrayidx = getelementptr inbounds [1 x i32], [1 x i32]* %l_2, i64 0, i64 0 21 store i32 0, i32* %arrayidx, align 4 22 %tmp = load i32, i32* @g_3, align 4 23 %idxprom = sext i32 %tmp to i64 24 %arrayidx1 = getelementptr inbounds [1 x i32], [1 x i32]* %l_2, i64 0, i64 %idxprom 25 %tmp1 = load i32, i32* %arrayidx1, align 4 26 %conv.i.i = and i32 %tmp1, 65535 27 %tobool.i.i.i = icmp ne i32 %tmp, 0 28 br label %codeRepl 29 30 codeRepl.loopexit.us-lcssa: ; preds = %for.body.i.i, %codeRepl5 31 br label %codeRepl.loopexit 32 33 codeRepl.loopexit: ; preds = %codeRepl.loopexit.us-lcssa.us, %codeRepl.loopexit.us-lcssa 34 br label %codeRepl 35 36 codeRepl: ; preds = %codeRepl.loopexit, %entry 37 br i1 %tobool.i.i.i, label %codeRepl.split.us, label %codeRepl.codeRepl.split_crit_edge 38 39 codeRepl.codeRepl.split_crit_edge: ; preds = %codeRepl 40 br label %codeRepl.split 41 42 codeRepl.split.us: ; preds = %codeRepl 43 br label %for.cond.i.i.us 44 45 for.cond.i.i.us: ; preds = %for.inc.i.i.us, %codeRepl.split.us 46 %tmp2 = phi i32 [ 0, %codeRepl.split.us ], [ %add.i.i.us, %for.inc.i.i.us ] 47 br label %codeRepl5.us 48 49 for.inc.i.i.us: ; preds = %for.body.i.i.us 50 %add.i.i.us = add nsw i32 %tmp2, 1 51 store i32 %add.i.i.us, i32* @g_752, align 4 52 br label %for.cond.i.i.us 53 54 for.body.i.i.us: ; preds = %codeRepl5.us 55 %div.i.i.i.us = udiv i32 1, %conv.i.i 56 %cmp5.i.i.us = icmp eq i32 %div.i.i.i.us, %tmp2 57 br i1 %cmp5.i.i.us, label %codeRepl.loopexit.us-lcssa.us, label %for.inc.i.i.us 58 59 codeRepl5.us: ; preds = %for.cond.i.i.us 60 br i1 true, label %codeRepl.loopexit.us-lcssa.us, label %for.body.i.i.us 61 62 codeRepl.loopexit.us-lcssa.us: ; preds = %codeRepl5.us, %for.body.i.i.us 63 br label %codeRepl.loopexit 64 65 codeRepl.split: ; preds = %codeRepl.codeRepl.split_crit_edge 66 br label %for.cond.i.i 67 68 for.cond.i.i: ; preds = %for.inc.i.i, %codeRepl.split 69 %tmp3 = phi i32 [ 0, %codeRepl.split ], [ %add.i.i, %for.inc.i.i ] 70 br label %codeRepl5 71 72 codeRepl5: ; preds = %for.cond.i.i 73 br i1 true, label %codeRepl.loopexit.us-lcssa, label %for.body.i.i 74 75 for.body.i.i: ; preds = %codeRepl5 76 %cmp5.i.i = icmp eq i32 0, %tmp3 77 br i1 %cmp5.i.i, label %codeRepl.loopexit.us-lcssa, label %for.inc.i.i 78 79 for.inc.i.i: ; preds = %for.body.i.i 80 %add.i.i = add nsw i32 %tmp3, 1 81 store i32 %add.i.i, i32* @g_752, align 4 82 br label %for.cond.i.i 83 84 func_4.exit: ; No predecessors! 85 ret i32 0 86 } 87
