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      1 ; RUN: llc -march=hexagon -O2 < %s | FileCheck %s
      2 
      3 ; Ensure that the second use of ##grcolor doesn't get replaced with
      4 ; r26 which is an induction variable
      5 
      6 ; CHECK: r{{[0-9]+}} = ##g4
      7 ; CHECK: r{{[0-9]+}} = {{.*}}##g4
      8 
      9 target triple = "hexagon-unknown--elf"
     10 
     11 @g0 = external global [450 x i32]
     12 @g1 = external global [842 x i32]
     13 @g2 = external global [750 x i32]
     14 @g3 = external global [750 x i32]
     15 @g4 = external global [750 x i32]
     16 @g5 = external global [750 x i32]
     17 @g6 = external global [750 x i32]
     18 @g7 = external global [750 x i32]
     19 @g8 = external global [750 x i32]
     20 @g9 = external global [750 x i32]
     21 @g10 = external global i32
     22 @g11 = external global [0 x i32]
     23 @g12 = external global [0 x i32]
     24 
     25 ; Function Attrs: nounwind readonly
     26 define i32 @f0(i32 %a0) #0 {
     27 b0:
     28   %v0 = load i32, i32* @g10, align 4, !tbaa !0
     29   %v1 = icmp sgt i32 %v0, 0
     30   br i1 %v1, label %b1, label %b21
     31 
     32 b1:                                               ; preds = %b0
     33   %v2 = getelementptr inbounds [842 x i32], [842 x i32]* @g1, i32 0, i32 %a0
     34   br label %b2
     35 
     36 b2:                                               ; preds = %b19, %b1
     37   %v3 = phi i32 [ 0, %b1 ], [ %v79, %b19 ]
     38   %v4 = phi i32 [ 32767, %b1 ], [ %v78, %b19 ]
     39   %v5 = phi i32 [ 0, %b1 ], [ %v77, %b19 ]
     40   %v6 = phi i32 [ 0, %b1 ], [ %v76, %b19 ]
     41   %v7 = phi i32 [ 0, %b1 ], [ %v80, %b19 ]
     42   %v8 = getelementptr inbounds [750 x i32], [750 x i32]* @g5, i32 0, i32 %v7
     43   %v9 = load i32, i32* %v8, align 4, !tbaa !0
     44   %v10 = icmp eq i32 %v9, 0
     45   br i1 %v10, label %b19, label %b3
     46 
     47 b3:                                               ; preds = %b2
     48   %v11 = getelementptr inbounds [750 x i32], [750 x i32]* @g4, i32 0, i32 %v7
     49   %v12 = load i32, i32* %v11, align 4, !tbaa !0
     50   %v13 = load i32, i32* %v2, align 4, !tbaa !0
     51   %v14 = getelementptr inbounds [750 x i32], [750 x i32]* @g4, i32 0, i32 %v13
     52   %v15 = load i32, i32* %v14, align 4, !tbaa !0
     53   %v16 = icmp eq i32 %v12, %v15
     54   br i1 %v16, label %b4, label %b8
     55 
     56 b4:                                               ; preds = %b3
     57   %v17 = getelementptr inbounds [750 x i32], [750 x i32]* @g6, i32 0, i32 %v7
     58   %v18 = load i32, i32* %v17, align 4, !tbaa !0
     59   %v19 = icmp eq i32 %v18, 25
     60   br i1 %v19, label %b5, label %b19
     61 
     62 b5:                                               ; preds = %b4
     63   %v20 = getelementptr inbounds [750 x i32], [750 x i32]* @g2, i32 0, i32 %v7
     64   %v21 = load i32, i32* %v20, align 4, !tbaa !0
     65   %v22 = icmp slt i32 %v21, 19
     66   br i1 %v22, label %b6, label %b19
     67 
     68 b6:                                               ; preds = %b5
     69   %v23 = getelementptr inbounds [750 x i32], [750 x i32]* @g9, i32 0, i32 %v7
     70   %v24 = load i32, i32* %v23, align 4, !tbaa !0
     71   %v25 = icmp eq i32 %v24, 0
     72   br i1 %v25, label %b19, label %b7
     73 
     74 b7:                                               ; preds = %b6
     75   %v26 = getelementptr inbounds [750 x i32], [750 x i32]* @g8, i32 0, i32 %v7
     76   %v27 = load i32, i32* %v26, align 4, !tbaa !0
     77   %v28 = mul nsw i32 %v27, 50
     78   %v29 = add nsw i32 %v28, %v3
     79   br label %b19
     80 
     81 b8:                                               ; preds = %b3
     82   %v30 = getelementptr inbounds [750 x i32], [750 x i32]* @g9, i32 0, i32 %v7
     83   %v31 = load i32, i32* %v30, align 4, !tbaa !0
     84   %v32 = icmp eq i32 %v31, 0
     85   br i1 %v32, label %b13, label %b9
     86 
     87 b9:                                               ; preds = %b8
     88   %v33 = getelementptr inbounds [750 x i32], [750 x i32]* @g7, i32 0, i32 %v7
     89   %v34 = load i32, i32* %v33, align 4, !tbaa !0
     90   %v35 = icmp eq i32 %v34, 0
     91   br i1 %v35, label %b10, label %b13
     92 
     93 b10:                                              ; preds = %b9
     94   %v36 = getelementptr inbounds [750 x i32], [750 x i32]* @g6, i32 0, i32 %v7
     95   %v37 = load i32, i32* %v36, align 4, !tbaa !0
     96   %v38 = icmp slt i32 %v37, 18
     97   br i1 %v38, label %b11, label %b13
     98 
     99 b11:                                              ; preds = %b10
    100   %v39 = getelementptr inbounds [0 x i32], [0 x i32]* @g11, i32 0, i32 %v37
    101   %v40 = load i32, i32* %v39, align 4, !tbaa !0
    102   %v41 = add nsw i32 %v40, 50
    103   %v42 = getelementptr inbounds [750 x i32], [750 x i32]* @g8, i32 0, i32 %v7
    104   %v43 = load i32, i32* %v42, align 4, !tbaa !0
    105   %v44 = mul nsw i32 %v41, %v43
    106   %v45 = icmp slt i32 %v44, %v4
    107   br i1 %v45, label %b12, label %b19
    108 
    109 b12:                                              ; preds = %b11
    110   br label %b19
    111 
    112 b13:                                              ; preds = %b10, %b9, %b8
    113   %v46 = getelementptr inbounds [750 x i32], [750 x i32]* @g2, i32 0, i32 %v7
    114   %v47 = load i32, i32* %v46, align 4, !tbaa !0
    115   %v48 = and i32 %v47, 31
    116   %v49 = getelementptr inbounds [0 x i32], [0 x i32]* @g12, i32 0, i32 %v48
    117   %v50 = load i32, i32* %v49, align 4, !tbaa !0
    118   %v51 = icmp eq i32 %v50, 0
    119   br i1 %v51, label %b19, label %b14
    120 
    121 b14:                                              ; preds = %b13
    122   %v52 = getelementptr inbounds [750 x i32], [750 x i32]* @g2, i32 0, i32 %v13
    123   %v53 = load i32, i32* %v52, align 4, !tbaa !0
    124   %v54 = icmp slt i32 %v53, 11
    125   br i1 %v54, label %b15, label %b19
    126 
    127 b15:                                              ; preds = %b14
    128   %v55 = getelementptr inbounds [750 x i32], [750 x i32]* @g6, i32 0, i32 %v7
    129   %v56 = load i32, i32* %v55, align 4, !tbaa !0
    130   %v57 = icmp slt i32 %v56, 11
    131   br i1 %v57, label %b16, label %b19
    132 
    133 b16:                                              ; preds = %b15
    134   %v58 = getelementptr inbounds [0 x i32], [0 x i32]* @g11, i32 0, i32 %v56
    135   %v59 = load i32, i32* %v58, align 4, !tbaa !0
    136   %v60 = add nsw i32 %v59, 50
    137   %v61 = getelementptr inbounds [750 x i32], [750 x i32]* @g3, i32 0, i32 %v7
    138   %v62 = load i32, i32* %v61, align 4, !tbaa !0
    139   %v63 = getelementptr inbounds [450 x i32], [450 x i32]* @g0, i32 0, i32 %v62
    140   %v64 = load i32, i32* %v63, align 4, !tbaa !0
    141   %v65 = mul nsw i32 %v64, %v60
    142   %v66 = sdiv i32 %v65, 2
    143   %v67 = add nsw i32 %v66, %v6
    144   %v68 = getelementptr inbounds [750 x i32], [750 x i32]* @g8, i32 0, i32 %v7
    145   %v69 = load i32, i32* %v68, align 4, !tbaa !0
    146   %v70 = icmp sgt i32 %v69, 1
    147   br i1 %v70, label %b17, label %b18
    148 
    149 b17:                                              ; preds = %b16
    150   %v71 = mul nsw i32 %v69, 25
    151   %v72 = add nsw i32 %v71, %v67
    152   br label %b18
    153 
    154 b18:                                              ; preds = %b17, %b16
    155   %v73 = phi i32 [ %v72, %b17 ], [ %v67, %b16 ]
    156   %v74 = tail call i32 @f1(i32 %v7, i32 %a0)
    157   %v75 = add nsw i32 %v74, %v5
    158   br label %b19
    159 
    160 b19:                                              ; preds = %b18, %b15, %b14, %b13, %b12, %b11, %b7, %b6, %b5, %b4, %b2
    161   %v76 = phi i32 [ %v6, %b7 ], [ %v6, %b6 ], [ %v6, %b5 ], [ %v6, %b4 ], [ %v73, %b18 ], [ %v6, %b15 ], [ %v6, %b14 ], [ %v6, %b13 ], [ %v6, %b12 ], [ %v6, %b11 ], [ %v6, %b2 ]
    162   %v77 = phi i32 [ %v5, %b7 ], [ %v5, %b6 ], [ %v5, %b5 ], [ %v5, %b4 ], [ %v75, %b18 ], [ %v5, %b15 ], [ %v5, %b14 ], [ %v5, %b13 ], [ %v5, %b12 ], [ %v5, %b11 ], [ %v5, %b2 ]
    163   %v78 = phi i32 [ %v4, %b7 ], [ %v4, %b6 ], [ %v4, %b5 ], [ %v4, %b4 ], [ %v4, %b18 ], [ %v4, %b15 ], [ %v4, %b14 ], [ %v4, %b13 ], [ %v44, %b12 ], [ %v4, %b11 ], [ %v4, %b2 ]
    164   %v79 = phi i32 [ %v29, %b7 ], [ %v3, %b6 ], [ %v3, %b5 ], [ %v3, %b4 ], [ %v3, %b18 ], [ %v3, %b15 ], [ %v3, %b14 ], [ %v3, %b13 ], [ %v3, %b12 ], [ %v3, %b11 ], [ %v3, %b2 ]
    165   %v80 = add nsw i32 %v7, 1
    166   %v81 = icmp slt i32 %v80, %v0
    167   br i1 %v81, label %b2, label %b20
    168 
    169 b20:                                              ; preds = %b19
    170   br label %b21
    171 
    172 b21:                                              ; preds = %b20, %b0
    173   %v82 = phi i32 [ 0, %b0 ], [ %v79, %b20 ]
    174   %v83 = phi i32 [ 32767, %b0 ], [ %v78, %b20 ]
    175   %v84 = phi i32 [ 0, %b0 ], [ %v77, %b20 ]
    176   %v85 = phi i32 [ 0, %b0 ], [ %v76, %b20 ]
    177   %v86 = icmp eq i32 %v83, 32767
    178   %v87 = sdiv i32 %v83, 2
    179   %v88 = select i1 %v86, i32 0, i32 %v87
    180   %v89 = add i32 %v84, %v85
    181   %v90 = add i32 %v89, %v82
    182   %v91 = add i32 %v90, %v88
    183   ret i32 %v91
    184 }
    185 
    186 ; Function Attrs: nounwind readonly
    187 declare i32 @f1(i32, i32) #0
    188 
    189 attributes #0 = { nounwind readonly }
    190 
    191 !0 = !{!1, !1, i64 0}
    192 !1 = !{!"int", !2}
    193 !2 = !{!"omnipotent char", !3}
    194 !3 = !{!"Simple C/C++ TBAA"}
    195