1; REQUIRES: asserts 2; RUN: opt < %s -globalopt -stats -disable-output 2>&1 | grep "1 globalopt - Number of global vars shrunk to booleans" 3 4@Stop = internal global i32 0 ; <i32*> [#uses=3] 5 6define i32 @foo(i32 %i) nounwind ssp { 7entry: 8 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] 9 call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !3, metadata !{}) 10 %0 = icmp eq i32 %i, 1, !dbg !7 ; <i1> [#uses=1] 11 br i1 %0, label %bb, label %bb1, !dbg !7 12 13bb: ; preds = %entry 14 store i32 0, i32* @Stop, align 4, !dbg !9 15 %1 = mul nsw i32 %i, 42, !dbg !10 ; <i32> [#uses=1] 16 call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !3, metadata !{}), !dbg !10 17 br label %bb2, !dbg !10 18 19bb1: ; preds = %entry 20 store i32 1, i32* @Stop, align 4, !dbg !11 21 br label %bb2, !dbg !11 22 23bb2: ; preds = %bb1, %bb 24 %i_addr.0 = phi i32 [ %1, %bb ], [ %i, %bb1 ] ; <i32> [#uses=1] 25 br label %return, !dbg !12 26 27return: ; preds = %bb2 28 ret i32 %i_addr.0, !dbg !12 29} 30 31declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone 32 33define i32 @bar() nounwind ssp { 34entry: 35 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] 36 %0 = load i32* @Stop, align 4, !dbg !13 ; <i32> [#uses=1] 37 %1 = icmp eq i32 %0, 1, !dbg !13 ; <i1> [#uses=1] 38 br i1 %1, label %bb, label %bb1, !dbg !13 39 40bb: ; preds = %entry 41 br label %bb2, !dbg !18 42 43bb1: ; preds = %entry 44 br label %bb2, !dbg !19 45 46bb2: ; preds = %bb1, %bb 47 %.0 = phi i32 [ 0, %bb ], [ 1, %bb1 ] ; <i32> [#uses=1] 48 br label %return, !dbg !19 49 50return: ; preds = %bb2 51 ret i32 %.0, !dbg !19 52} 53 54declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone 55 56!llvm.dbg.gv = !{!0} 57 58!0 = !{!"0x34\00Stop\00Stop\00\002\001\001", !1, !1, !2, i32* @Stop} ; [ DW_TAG_variable ] 59!1 = !{!"0x11\001\004.2.1 (Based on Apple Inc. build 5658) (LLVM build)\001\00\000\00\000", !20, !21, !21, null, null, null} ; [ DW_TAG_compile_unit ] 60!2 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !1} ; [ DW_TAG_base_type ] 61!3 = !{!"0x101\00i\004\000", !4, !1, !2} ; [ DW_TAG_arg_variable ] 62!4 = !{!"0x2e\00foo\00foo\00foo\004\000\001\000\006\000\000\000", i32 0, !1, !5, null, null, null, null, null} ; [ DW_TAG_subprogram ] 63!5 = !{!"0x15\00\000\000\000\000\000\000", !1, null, null, !6, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 64!6 = !{!2, !2} 65!7 = !MDLocation(line: 5, scope: !8) 66!8 = !{!"0xb\000\000\000", !20, !4} ; [ DW_TAG_lexical_block ] 67!9 = !MDLocation(line: 6, scope: !8) 68!10 = !MDLocation(line: 7, scope: !8) 69!11 = !MDLocation(line: 9, scope: !8) 70!12 = !MDLocation(line: 11, scope: !8) 71!13 = !MDLocation(line: 14, scope: !14) 72!14 = !{!"0xb\000\000\000", !20, !15} ; [ DW_TAG_lexical_block ] 73!15 = !{!"0x2e\00bar\00bar\00bar\0013\000\001\000\006\000\000\000", i32 0, !1, !16, null, null, null, null, null} ; [ DW_TAG_subprogram ] 74!16 = !{!"0x15\00\000\000\000\000\000\000", !1, null, null, !17, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 75!17 = !{!2} 76!18 = !MDLocation(line: 15, scope: !14) 77!19 = !MDLocation(line: 16, scope: !14) 78!20 = !{!"g.c", !"/tmp"} 79!21 = !{i32 0} 80