1 ; RUN: opt < %s -globalopt -stats -disable-output |& grep "1 globalopt - Number of global vars shrunk to booleans" 2 3 @Stop = internal global i32 0 ; <i32*> [#uses=3] 4 5 define i32 @foo(i32 %i) nounwind ssp { 6 entry: 7 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] 8 call void @llvm.dbg.value(metadata !{i32 %i}, i64 0, metadata !3) 9 %0 = icmp eq i32 %i, 1, !dbg !7 ; <i1> [#uses=1] 10 br i1 %0, label %bb, label %bb1, !dbg !7 11 12 bb: ; preds = %entry 13 store i32 0, i32* @Stop, align 4, !dbg !9 14 %1 = mul nsw i32 %i, 42, !dbg !10 ; <i32> [#uses=1] 15 call void @llvm.dbg.value(metadata !{i32 %1}, i64 0, metadata !3), !dbg !10 16 br label %bb2, !dbg !10 17 18 bb1: ; preds = %entry 19 store i32 1, i32* @Stop, align 4, !dbg !11 20 br label %bb2, !dbg !11 21 22 bb2: ; preds = %bb1, %bb 23 %i_addr.0 = phi i32 [ %1, %bb ], [ %i, %bb1 ] ; <i32> [#uses=1] 24 br label %return, !dbg !12 25 26 return: ; preds = %bb2 27 ret i32 %i_addr.0, !dbg !12 28 } 29 30 declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone 31 32 define i32 @bar() nounwind ssp { 33 entry: 34 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] 35 %0 = load i32* @Stop, align 4, !dbg !13 ; <i32> [#uses=1] 36 %1 = icmp eq i32 %0, 1, !dbg !13 ; <i1> [#uses=1] 37 br i1 %1, label %bb, label %bb1, !dbg !13 38 39 bb: ; preds = %entry 40 br label %bb2, !dbg !18 41 42 bb1: ; preds = %entry 43 br label %bb2, !dbg !19 44 45 bb2: ; preds = %bb1, %bb 46 %.0 = phi i32 [ 0, %bb ], [ 1, %bb1 ] ; <i32> [#uses=1] 47 br label %return, !dbg !19 48 49 return: ; preds = %bb2 50 ret i32 %.0, !dbg !19 51 } 52 53 declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone 54 55 !llvm.dbg.gv = !{!0} 56 57 !0 = metadata !{i32 458804, i32 0, metadata !1, metadata !"Stop", metadata !"Stop", metadata !"", metadata !1, i32 2, metadata !2, i1 true, i1 true, i32* @Stop} ; [ DW_TAG_variable ] 58 !1 = metadata !{i32 458769, i32 0, i32 1, metadata !"g.c", metadata !"/tmp", metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 true, i1 false, metadata !"", i32 0} ; [ DW_TAG_compile_unit ] 59 !2 = metadata !{i32 458788, metadata !1, metadata !"int", metadata !1, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] 60 !3 = metadata !{i32 459009, metadata !4, metadata !"i", metadata !1, i32 4, metadata !2} ; [ DW_TAG_arg_variable ] 61 !4 = metadata !{i32 458798, i32 0, metadata !1, metadata !"foo", metadata !"foo", metadata !"foo", metadata !1, i32 4, metadata !5, i1 false, i1 true, i32 0, i32 0, null, i1 false} ; [ DW_TAG_subprogram ] 62 !5 = metadata !{i32 458773, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null} ; [ DW_TAG_subroutine_type ] 63 !6 = metadata !{metadata !2, metadata !2} 64 !7 = metadata !{i32 5, i32 0, metadata !8, null} 65 !8 = metadata !{i32 458763, metadata !4, i32 0, i32 0} ; [ DW_TAG_lexical_block ] 66 !9 = metadata !{i32 6, i32 0, metadata !8, null} 67 !10 = metadata !{i32 7, i32 0, metadata !8, null} 68 !11 = metadata !{i32 9, i32 0, metadata !8, null} 69 !12 = metadata !{i32 11, i32 0, metadata !8, null} 70 !13 = metadata !{i32 14, i32 0, metadata !14, null} 71 !14 = metadata !{i32 458763, metadata !15, i32 0, i32 0} ; [ DW_TAG_lexical_block ] 72 !15 = metadata !{i32 458798, i32 0, metadata !1, metadata !"bar", metadata !"bar", metadata !"bar", metadata !1, i32 13, metadata !16, i1 false, i1 true, i32 0, i32 0, null, i1 false} ; [ DW_TAG_subprogram ] 73 !16 = metadata !{i32 458773, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !17, i32 0, null} ; [ DW_TAG_subroutine_type ] 74 !17 = metadata !{metadata !2} 75 !18 = metadata !{i32 15, i32 0, metadata !14, null} 76 !19 = metadata !{i32 16, i32 0, metadata !14, null} 77
