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      1 ; RUN: llc -mtriple=x86_64-pc-linux -O2 < %s | FileCheck %s
      2 ; RUN: llc -mtriple=x86_64-pc-linux -O2 -regalloc=basic < %s | FileCheck %s
      3 ; Test to check .debug_loc support. This test case emits many debug_loc entries.
      4 
      5 ; CHECK: Loc expr size
      6 ; CHECK-NEXT: .short
      7 ; CHECK-NEXT: .Ltmp
      8 ; CHECK-NEXT: DW_OP_reg
      9 
     10 %0 = type { double }
     11 
     12 define hidden %0 @__divsc3(float %a, float %b, float %c, float %d) nounwind readnone {
     13 entry:
     14   tail call void @llvm.dbg.value(metadata !{float %a}, i64 0, metadata !0)
     15   tail call void @llvm.dbg.value(metadata !{float %b}, i64 0, metadata !11)
     16   tail call void @llvm.dbg.value(metadata !{float %c}, i64 0, metadata !12)
     17   tail call void @llvm.dbg.value(metadata !{float %d}, i64 0, metadata !13)
     18   %0 = tail call float @fabsf(float %c) nounwind readnone, !dbg !19 ; <float> [#uses=1]
     19   %1 = tail call float @fabsf(float %d) nounwind readnone, !dbg !19 ; <float> [#uses=1]
     20   %2 = fcmp olt float %0, %1, !dbg !19            ; <i1> [#uses=1]
     21   br i1 %2, label %bb, label %bb1, !dbg !19
     22 
     23 bb:                                               ; preds = %entry
     24   %3 = fdiv float %c, %d, !dbg !20                ; <float> [#uses=3]
     25   tail call void @llvm.dbg.value(metadata !{float %3}, i64 0, metadata !16), !dbg !20
     26   %4 = fmul float %3, %c, !dbg !21                ; <float> [#uses=1]
     27   %5 = fadd float %4, %d, !dbg !21                ; <float> [#uses=2]
     28   tail call void @llvm.dbg.value(metadata !{float %5}, i64 0, metadata !14), !dbg !21
     29   %6 = fmul float %3, %a, !dbg !22                ; <float> [#uses=1]
     30   %7 = fadd float %6, %b, !dbg !22                ; <float> [#uses=1]
     31   %8 = fdiv float %7, %5, !dbg !22                ; <float> [#uses=1]
     32   tail call void @llvm.dbg.value(metadata !{float %8}, i64 0, metadata !17), !dbg !22
     33   %9 = fmul float %3, %b, !dbg !23                ; <float> [#uses=1]
     34   %10 = fsub float %9, %a, !dbg !23               ; <float> [#uses=1]
     35   %11 = fdiv float %10, %5, !dbg !23              ; <float> [#uses=1]
     36   tail call void @llvm.dbg.value(metadata !{float %11}, i64 0, metadata !18), !dbg !23
     37   br label %bb2, !dbg !23
     38 
     39 bb1:                                              ; preds = %entry
     40   %12 = fdiv float %d, %c, !dbg !24               ; <float> [#uses=3]
     41   tail call void @llvm.dbg.value(metadata !{float %12}, i64 0, metadata !16), !dbg !24
     42   %13 = fmul float %12, %d, !dbg !25              ; <float> [#uses=1]
     43   %14 = fadd float %13, %c, !dbg !25              ; <float> [#uses=2]
     44   tail call void @llvm.dbg.value(metadata !{float %14}, i64 0, metadata !14), !dbg !25
     45   %15 = fmul float %12, %b, !dbg !26              ; <float> [#uses=1]
     46   %16 = fadd float %15, %a, !dbg !26              ; <float> [#uses=1]
     47   %17 = fdiv float %16, %14, !dbg !26             ; <float> [#uses=1]
     48   tail call void @llvm.dbg.value(metadata !{float %17}, i64 0, metadata !17), !dbg !26
     49   %18 = fmul float %12, %a, !dbg !27              ; <float> [#uses=1]
     50   %19 = fsub float %b, %18, !dbg !27              ; <float> [#uses=1]
     51   %20 = fdiv float %19, %14, !dbg !27             ; <float> [#uses=1]
     52   tail call void @llvm.dbg.value(metadata !{float %20}, i64 0, metadata !18), !dbg !27
     53   br label %bb2, !dbg !27
     54 
     55 bb2:                                              ; preds = %bb1, %bb
     56   %y.0 = phi float [ %11, %bb ], [ %20, %bb1 ]    ; <float> [#uses=5]
     57   %x.0 = phi float [ %8, %bb ], [ %17, %bb1 ]     ; <float> [#uses=5]
     58   %21 = fcmp uno float %x.0, 0.000000e+00, !dbg !28 ; <i1> [#uses=1]
     59   %22 = fcmp uno float %y.0, 0.000000e+00, !dbg !28 ; <i1> [#uses=1]
     60   %or.cond = and i1 %21, %22                      ; <i1> [#uses=1]
     61   br i1 %or.cond, label %bb4, label %bb46, !dbg !28
     62 
     63 bb4:                                              ; preds = %bb2
     64   %23 = fcmp une float %c, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
     65   %24 = fcmp une float %d, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
     66   %or.cond93 = or i1 %23, %24                     ; <i1> [#uses=1]
     67   br i1 %or.cond93, label %bb9, label %bb6, !dbg !29
     68 
     69 bb6:                                              ; preds = %bb4
     70   %25 = fcmp uno float %a, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
     71   %26 = fcmp uno float %b, 0.000000e+00, !dbg !29 ; <i1> [#uses=1]
     72   %or.cond94 = and i1 %25, %26                    ; <i1> [#uses=1]
     73   br i1 %or.cond94, label %bb9, label %bb8, !dbg !29
     74 
     75 bb8:                                              ; preds = %bb6
     76   %27 = tail call float @copysignf(float 0x7FF0000000000000, float %c) nounwind readnone, !dbg !30 ; <float> [#uses=2]
     77   %28 = fmul float %27, %a, !dbg !30              ; <float> [#uses=1]
     78   tail call void @llvm.dbg.value(metadata !{float %28}, i64 0, metadata !17), !dbg !30
     79   %29 = fmul float %27, %b, !dbg !31              ; <float> [#uses=1]
     80   tail call void @llvm.dbg.value(metadata !{float %29}, i64 0, metadata !18), !dbg !31
     81   br label %bb46, !dbg !31
     82 
     83 bb9:                                              ; preds = %bb6, %bb4
     84   %30 = fcmp ord float %a, 0.000000e+00           ; <i1> [#uses=1]
     85   %31 = fsub float %a, %a, !dbg !32               ; <float> [#uses=3]
     86   %32 = fcmp uno float %31, 0.000000e+00          ; <i1> [#uses=1]
     87   %33 = and i1 %30, %32, !dbg !32                 ; <i1> [#uses=2]
     88   br i1 %33, label %bb14, label %bb11, !dbg !32
     89 
     90 bb11:                                             ; preds = %bb9
     91   %34 = fcmp ord float %b, 0.000000e+00           ; <i1> [#uses=1]
     92   %35 = fsub float %b, %b, !dbg !32               ; <float> [#uses=1]
     93   %36 = fcmp uno float %35, 0.000000e+00          ; <i1> [#uses=1]
     94   %37 = and i1 %34, %36, !dbg !32                 ; <i1> [#uses=1]
     95   br i1 %37, label %bb14, label %bb27, !dbg !32
     96 
     97 bb14:                                             ; preds = %bb11, %bb9
     98   %38 = fsub float %c, %c, !dbg !32               ; <float> [#uses=1]
     99   %39 = fcmp ord float %38, 0.000000e+00          ; <i1> [#uses=1]
    100   br i1 %39, label %bb15, label %bb27, !dbg !32
    101 
    102 bb15:                                             ; preds = %bb14
    103   %40 = fsub float %d, %d, !dbg !32               ; <float> [#uses=1]
    104   %41 = fcmp ord float %40, 0.000000e+00          ; <i1> [#uses=1]
    105   br i1 %41, label %bb16, label %bb27, !dbg !32
    106 
    107 bb16:                                             ; preds = %bb15
    108   %iftmp.0.0 = select i1 %33, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
    109   %42 = tail call float @copysignf(float %iftmp.0.0, float %a) nounwind readnone, !dbg !33 ; <float> [#uses=2]
    110   tail call void @llvm.dbg.value(metadata !{float %42}, i64 0, metadata !0), !dbg !33
    111   %43 = fcmp ord float %b, 0.000000e+00           ; <i1> [#uses=1]
    112   %44 = fsub float %b, %b, !dbg !34               ; <float> [#uses=1]
    113   %45 = fcmp uno float %44, 0.000000e+00          ; <i1> [#uses=1]
    114   %46 = and i1 %43, %45, !dbg !34                 ; <i1> [#uses=1]
    115   %iftmp.1.0 = select i1 %46, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
    116   %47 = tail call float @copysignf(float %iftmp.1.0, float %b) nounwind readnone, !dbg !34 ; <float> [#uses=2]
    117   tail call void @llvm.dbg.value(metadata !{float %47}, i64 0, metadata !11), !dbg !34
    118   %48 = fmul float %42, %c, !dbg !35              ; <float> [#uses=1]
    119   %49 = fmul float %47, %d, !dbg !35              ; <float> [#uses=1]
    120   %50 = fadd float %48, %49, !dbg !35             ; <float> [#uses=1]
    121   %51 = fmul float %50, 0x7FF0000000000000, !dbg !35 ; <float> [#uses=1]
    122   tail call void @llvm.dbg.value(metadata !{float %51}, i64 0, metadata !17), !dbg !35
    123   %52 = fmul float %47, %c, !dbg !36              ; <float> [#uses=1]
    124   %53 = fmul float %42, %d, !dbg !36              ; <float> [#uses=1]
    125   %54 = fsub float %52, %53, !dbg !36             ; <float> [#uses=1]
    126   %55 = fmul float %54, 0x7FF0000000000000, !dbg !36 ; <float> [#uses=1]
    127   tail call void @llvm.dbg.value(metadata !{float %55}, i64 0, metadata !18), !dbg !36
    128   br label %bb46, !dbg !36
    129 
    130 bb27:                                             ; preds = %bb15, %bb14, %bb11
    131   %56 = fcmp ord float %c, 0.000000e+00           ; <i1> [#uses=1]
    132   %57 = fsub float %c, %c, !dbg !37               ; <float> [#uses=1]
    133   %58 = fcmp uno float %57, 0.000000e+00          ; <i1> [#uses=1]
    134   %59 = and i1 %56, %58, !dbg !37                 ; <i1> [#uses=2]
    135   br i1 %59, label %bb33, label %bb30, !dbg !37
    136 
    137 bb30:                                             ; preds = %bb27
    138   %60 = fcmp ord float %d, 0.000000e+00           ; <i1> [#uses=1]
    139   %61 = fsub float %d, %d, !dbg !37               ; <float> [#uses=1]
    140   %62 = fcmp uno float %61, 0.000000e+00          ; <i1> [#uses=1]
    141   %63 = and i1 %60, %62, !dbg !37                 ; <i1> [#uses=1]
    142   %64 = fcmp ord float %31, 0.000000e+00          ; <i1> [#uses=1]
    143   %or.cond95 = and i1 %63, %64                    ; <i1> [#uses=1]
    144   br i1 %or.cond95, label %bb34, label %bb46, !dbg !37
    145 
    146 bb33:                                             ; preds = %bb27
    147   %.old = fcmp ord float %31, 0.000000e+00        ; <i1> [#uses=1]
    148   br i1 %.old, label %bb34, label %bb46, !dbg !37
    149 
    150 bb34:                                             ; preds = %bb33, %bb30
    151   %65 = fsub float %b, %b, !dbg !37               ; <float> [#uses=1]
    152   %66 = fcmp ord float %65, 0.000000e+00          ; <i1> [#uses=1]
    153   br i1 %66, label %bb35, label %bb46, !dbg !37
    154 
    155 bb35:                                             ; preds = %bb34
    156   %iftmp.2.0 = select i1 %59, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
    157   %67 = tail call float @copysignf(float %iftmp.2.0, float %c) nounwind readnone, !dbg !38 ; <float> [#uses=2]
    158   tail call void @llvm.dbg.value(metadata !{float %67}, i64 0, metadata !12), !dbg !38
    159   %68 = fcmp ord float %d, 0.000000e+00           ; <i1> [#uses=1]
    160   %69 = fsub float %d, %d, !dbg !39               ; <float> [#uses=1]
    161   %70 = fcmp uno float %69, 0.000000e+00          ; <i1> [#uses=1]
    162   %71 = and i1 %68, %70, !dbg !39                 ; <i1> [#uses=1]
    163   %iftmp.3.0 = select i1 %71, float 1.000000e+00, float 0.000000e+00 ; <float> [#uses=1]
    164   %72 = tail call float @copysignf(float %iftmp.3.0, float %d) nounwind readnone, !dbg !39 ; <float> [#uses=2]
    165   tail call void @llvm.dbg.value(metadata !{float %72}, i64 0, metadata !13), !dbg !39
    166   %73 = fmul float %67, %a, !dbg !40              ; <float> [#uses=1]
    167   %74 = fmul float %72, %b, !dbg !40              ; <float> [#uses=1]
    168   %75 = fadd float %73, %74, !dbg !40             ; <float> [#uses=1]
    169   %76 = fmul float %75, 0.000000e+00, !dbg !40    ; <float> [#uses=1]
    170   tail call void @llvm.dbg.value(metadata !{float %76}, i64 0, metadata !17), !dbg !40
    171   %77 = fmul float %67, %b, !dbg !41              ; <float> [#uses=1]
    172   %78 = fmul float %72, %a, !dbg !41              ; <float> [#uses=1]
    173   %79 = fsub float %77, %78, !dbg !41             ; <float> [#uses=1]
    174   %80 = fmul float %79, 0.000000e+00, !dbg !41    ; <float> [#uses=1]
    175   tail call void @llvm.dbg.value(metadata !{float %80}, i64 0, metadata !18), !dbg !41
    176   br label %bb46, !dbg !41
    177 
    178 bb46:                                             ; preds = %bb35, %bb34, %bb33, %bb30, %bb16, %bb8, %bb2
    179   %y.1 = phi float [ %80, %bb35 ], [ %y.0, %bb34 ], [ %y.0, %bb33 ], [ %y.0, %bb30 ], [ %55, %bb16 ], [ %29, %bb8 ], [ %y.0, %bb2 ] ; <float> [#uses=2]
    180   %x.1 = phi float [ %76, %bb35 ], [ %x.0, %bb34 ], [ %x.0, %bb33 ], [ %x.0, %bb30 ], [ %51, %bb16 ], [ %28, %bb8 ], [ %x.0, %bb2 ] ; <float> [#uses=1]
    181   %81 = fmul float %y.1, 0.000000e+00, !dbg !42   ; <float> [#uses=1]
    182   %82 = fadd float %y.1, 0.000000e+00, !dbg !42   ; <float> [#uses=1]
    183   %tmpr = fadd float %x.1, %81, !dbg !42          ; <float> [#uses=1]
    184   %tmp89 = bitcast float %tmpr to i32             ; <i32> [#uses=1]
    185   %tmp90 = zext i32 %tmp89 to i64                 ; <i64> [#uses=1]
    186   %tmp85 = bitcast float %82 to i32               ; <i32> [#uses=1]
    187   %tmp86 = zext i32 %tmp85 to i64                 ; <i64> [#uses=1]
    188   %tmp87 = shl i64 %tmp86, 32                     ; <i64> [#uses=1]
    189   %ins = or i64 %tmp90, %tmp87                    ; <i64> [#uses=1]
    190   %tmp84 = bitcast i64 %ins to double             ; <double> [#uses=1]
    191   %mrv75 = insertvalue %0 undef, double %tmp84, 0, !dbg !42 ; <%0> [#uses=1]
    192   ret %0 %mrv75, !dbg !42
    193 }
    194 
    195 declare float @fabsf(float)
    196 
    197 declare float @copysignf(float, float) nounwind readnone
    198 
    199 declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
    200 
    201 !llvm.dbg.lv = !{!0, !11, !12, !13, !14, !16, !17, !18}
    202 
    203 !0 = metadata !{i32 524545, metadata !1, metadata !"a", metadata !2, i32 1921, metadata !9} ; [ DW_TAG_arg_variable ]
    204 !1 = metadata !{i32 524334, i32 0, metadata !2, metadata !"__divsc3", metadata !"__divsc3", metadata !"__divsc3", metadata !2, i32 1922, metadata !4, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true} ; [ DW_TAG_subprogram ]
    205 !2 = metadata !{i32 524329, metadata !"libgcc2.c", metadata !"/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc", metadata !3} ; [ DW_TAG_file_type ]
    206 !3 = metadata !{i32 524305, i32 0, i32 1, metadata !"libgcc2.c", metadata !"/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc", metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 true, i1 true, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
    207 !4 = metadata !{i32 524309, metadata !2, metadata !"", metadata !2, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !5, i32 0, null} ; [ DW_TAG_subroutine_type ]
    208 !5 = metadata !{metadata !6, metadata !9, metadata !9, metadata !9, metadata !9}
    209 !6 = metadata !{i32 524310, metadata !7, metadata !"SCtype", metadata !7, i32 170, i64 0, i64 0, i64 0, i32 0, metadata !8} ; [ DW_TAG_typedef ]
    210 !7 = metadata !{i32 524329, metadata !"libgcc2.h", metadata !"/Users/yash/clean/LG.D/gcc/../../llvmgcc/gcc", metadata !3} ; [ DW_TAG_file_type ]
    211 !8 = metadata !{i32 524324, metadata !2, metadata !"complex float", metadata !2, i32 0, i64 64, i64 32, i64 0, i32 0, i32 3} ; [ DW_TAG_base_type ]
    212 !9 = metadata !{i32 524310, metadata !7, metadata !"SFtype", metadata !7, i32 167, i64 0, i64 0, i64 0, i32 0, metadata !10} ; [ DW_TAG_typedef ]
    213 !10 = metadata !{i32 524324, metadata !2, metadata !"float", metadata !2, i32 0, i64 32, i64 32, i64 0, i32 0, i32 4} ; [ DW_TAG_base_type ]
    214 !11 = metadata !{i32 524545, metadata !1, metadata !"b", metadata !2, i32 1921, metadata !9} ; [ DW_TAG_arg_variable ]
    215 !12 = metadata !{i32 524545, metadata !1, metadata !"c", metadata !2, i32 1921, metadata !9} ; [ DW_TAG_arg_variable ]
    216 !13 = metadata !{i32 524545, metadata !1, metadata !"d", metadata !2, i32 1921, metadata !9} ; [ DW_TAG_arg_variable ]
    217 !14 = metadata !{i32 524544, metadata !15, metadata !"denom", metadata !2, i32 1923, metadata !9} ; [ DW_TAG_auto_variable ]
    218 !15 = metadata !{i32 524299, metadata !1, i32 1922, i32 0} ; [ DW_TAG_lexical_block ]
    219 !16 = metadata !{i32 524544, metadata !15, metadata !"ratio", metadata !2, i32 1923, metadata !9} ; [ DW_TAG_auto_variable ]
    220 !17 = metadata !{i32 524544, metadata !15, metadata !"x", metadata !2, i32 1923, metadata !9} ; [ DW_TAG_auto_variable ]
    221 !18 = metadata !{i32 524544, metadata !15, metadata !"y", metadata !2, i32 1923, metadata !9} ; [ DW_TAG_auto_variable ]
    222 !19 = metadata !{i32 1929, i32 0, metadata !15, null}
    223 !20 = metadata !{i32 1931, i32 0, metadata !15, null}
    224 !21 = metadata !{i32 1932, i32 0, metadata !15, null}
    225 !22 = metadata !{i32 1933, i32 0, metadata !15, null}
    226 !23 = metadata !{i32 1934, i32 0, metadata !15, null}
    227 !24 = metadata !{i32 1938, i32 0, metadata !15, null}
    228 !25 = metadata !{i32 1939, i32 0, metadata !15, null}
    229 !26 = metadata !{i32 1940, i32 0, metadata !15, null}
    230 !27 = metadata !{i32 1941, i32 0, metadata !15, null}
    231 !28 = metadata !{i32 1946, i32 0, metadata !15, null}
    232 !29 = metadata !{i32 1948, i32 0, metadata !15, null}
    233 !30 = metadata !{i32 1950, i32 0, metadata !15, null}
    234 !31 = metadata !{i32 1951, i32 0, metadata !15, null}
    235 !32 = metadata !{i32 1953, i32 0, metadata !15, null}
    236 !33 = metadata !{i32 1955, i32 0, metadata !15, null}
    237 !34 = metadata !{i32 1956, i32 0, metadata !15, null}
    238 !35 = metadata !{i32 1957, i32 0, metadata !15, null}
    239 !36 = metadata !{i32 1958, i32 0, metadata !15, null}
    240 !37 = metadata !{i32 1960, i32 0, metadata !15, null}
    241 !38 = metadata !{i32 1962, i32 0, metadata !15, null}
    242 !39 = metadata !{i32 1963, i32 0, metadata !15, null}
    243 !40 = metadata !{i32 1964, i32 0, metadata !15, null}
    244 !41 = metadata !{i32 1965, i32 0, metadata !15, null}
    245 !42 = metadata !{i32 1969, i32 0, metadata !15, null}
    246