; The source code of the test case: ; extern void fn3(int *); ; extern void fn2(int); ; __attribute__((noinline)) void fn1(int x, int y) { ; int u = x + y; ; if (x > 1) ; u += 1; ; else ; u += 2; ; if (y > 4) ; u += x; ; int a = 7; ; fn2(a); ; int v = u; ; v++; ; u--; ; fn2(u); ; } ; ; __attribute__((noinline)) int f() { ; int l, k; ; fn3(&l); ; fn3(&k); ; fn1(l, k); ; return 0; ; } ; ModuleID = 'test.c' source_filename = "test.c" target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" ; Function Attrs: noinline nounwind optnone uwtable define dso_local void @fn1(i32 noundef %0, i32 noundef %1) !dbg !10 { %3 = alloca i32, align 4 %4 = alloca i32, align 4 %5 = alloca i32, align 4 %6 = alloca i32, align 4 %7 = alloca i32, align 4 store i32 %0, ptr %3, align 4 #dbg_declare(ptr %3, !15, !DIExpression(), !16) store i32 %1, ptr %4, align 4 #dbg_declare(ptr %4, !17, !DIExpression(), !18) #dbg_declare(ptr %5, !19, !DIExpression(), !20) %8 = load i32, ptr %3, align 4, !dbg !21 %9 = load i32, ptr %4, align 4, !dbg !22 %10 = add nsw i32 %8, %9, !dbg !23 store i32 %10, ptr %5, align 4, !dbg !20 %11 = load i32, ptr %3, align 4, !dbg !24 %12 = icmp sgt i32 %11, 1, !dbg !26 br i1 %12, label %13, label %16, !dbg !27 13: ; preds = %2 %14 = load i32, ptr %5, align 4, !dbg !28 %15 = add nsw i32 %14, 1, !dbg !28 store i32 %15, ptr %5, align 4, !dbg !28 br label %19, !dbg !29 16: ; preds = %2 %17 = load i32, ptr %5, align 4, !dbg !30 %18 = add nsw i32 %17, 2, !dbg !30 store i32 %18, ptr %5, align 4, !dbg !30 br label %19 19: ; preds = %16, %13 %20 = load i32, ptr %4, align 4, !dbg !31 %21 = icmp sgt i32 %20, 4, !dbg !33 br i1 %21, label %22, label %26, !dbg !34 22: ; preds = %19 %23 = load i32, ptr %3, align 4, !dbg !35 %24 = load i32, ptr %5, align 4, !dbg !36 %25 = add nsw i32 %24, %23, !dbg !36 store i32 %25, ptr %5, align 4, !dbg !36 br label %26, !dbg !37 26: ; preds = %22, %19 #dbg_declare(ptr %6, !38, !DIExpression(), !39) store i32 7, ptr %6, align 4, !dbg !39 %27 = load i32, ptr %6, align 4, !dbg !40 call void @fn2(i32 noundef %27), !dbg !41 #dbg_declare(ptr %7, !42, !DIExpression(), !43) %28 = load i32, ptr %5, align 4, !dbg !44 store i32 %28, ptr %7, align 4, !dbg !43 %29 = load i32, ptr %7, align 4, !dbg !45 %30 = add nsw i32 %29, 1, !dbg !45 store i32 %30, ptr %7, align 4, !dbg !45 %31 = load i32, ptr %5, align 4, !dbg !46 %32 = add nsw i32 %31, -1, !dbg !46 store i32 %32, ptr %5, align 4, !dbg !46 %33 = load i32, ptr %5, align 4, !dbg !47 call void @fn2(i32 noundef %33), !dbg !48 ret void, !dbg !49 } declare void @fn2(i32 noundef) ; Function Attrs: noinline nounwind optnone uwtable define dso_local i32 @f() !dbg !50 { %1 = alloca i32, align 4 %2 = alloca i32, align 4 #dbg_declare(ptr %1, !53, !DIExpression(), !54) #dbg_declare(ptr %2, !55, !DIExpression(), !56) call void @fn3(ptr noundef %1), !dbg !57 call void @fn3(ptr noundef %2), !dbg !58 %3 = load i32, ptr %1, align 4, !dbg !59 %4 = load i32, ptr %2, align 4, !dbg !60 call void @fn1(i32 noundef %3, i32 noundef %4), !dbg !61 ret i32 0, !dbg !62 } declare void @fn3(ptr noundef) !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!2, !3, !4, !5, !6, !7, !8} !llvm.ident = !{!9} !0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang version 19.1.7", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) !1 = !DIFile(filename: "test.c", directory: "/") !2 = !{i32 7, !"Dwarf Version", i32 5} !3 = !{i32 2, !"Debug Info Version", i32 3} !4 = !{i32 1, !"wchar_size", i32 4} !5 = !{i32 8, !"PIC Level", i32 2} !6 = !{i32 7, !"PIE Level", i32 2} !7 = !{i32 7, !"uwtable", i32 2} !8 = !{i32 7, !"frame-pointer", i32 2} !9 = !{!"clang version 19.1.7"} !10 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 3, type: !11, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !14) !11 = !DISubroutineType(types: !12) !12 = !{null, !13, !13} !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !14 = !{} !15 = !DILocalVariable(name: "x", arg: 1, scope: !10, file: !1, line: 3, type: !13) !16 = !DILocation(line: 3, column: 40, scope: !10) !17 = !DILocalVariable(name: "y", arg: 2, scope: !10, file: !1, line: 3, type: !13) !18 = !DILocation(line: 3, column: 47, scope: !10) !19 = !DILocalVariable(name: "u", scope: !10, file: !1, line: 4, type: !13) !20 = !DILocation(line: 4, column: 7, scope: !10) !21 = !DILocation(line: 4, column: 11, scope: !10) !22 = !DILocation(line: 4, column: 15, scope: !10) !23 = !DILocation(line: 4, column: 13, scope: !10) !24 = !DILocation(line: 5, column: 7, scope: !25) !25 = distinct !DILexicalBlock(scope: !10, file: !1, line: 5, column: 7) !26 = !DILocation(line: 5, column: 9, scope: !25) !27 = !DILocation(line: 5, column: 7, scope: !10) !28 = !DILocation(line: 6, column: 7, scope: !25) !29 = !DILocation(line: 6, column: 5, scope: !25) !30 = !DILocation(line: 8, column: 7, scope: !25) !31 = !DILocation(line: 9, column: 7, scope: !32) !32 = distinct !DILexicalBlock(scope: !10, file: !1, line: 9, column: 7) !33 = !DILocation(line: 9, column: 9, scope: !32) !34 = !DILocation(line: 9, column: 7, scope: !10) !35 = !DILocation(line: 10, column: 10, scope: !32) !36 = !DILocation(line: 10, column: 7, scope: !32) !37 = !DILocation(line: 10, column: 5, scope: !32) !38 = !DILocalVariable(name: "a", scope: !10, file: !1, line: 11, type: !13) !39 = !DILocation(line: 11, column: 7, scope: !10) !40 = !DILocation(line: 12, column: 7, scope: !10) !41 = !DILocation(line: 12, column: 3, scope: !10) !42 = !DILocalVariable(name: "v", scope: !10, file: !1, line: 13, type: !13) !43 = !DILocation(line: 13, column: 7, scope: !10) !44 = !DILocation(line: 13, column: 11, scope: !10) !45 = !DILocation(line: 14, column: 4, scope: !10) !46 = !DILocation(line: 15, column: 4, scope: !10) !47 = !DILocation(line: 16, column: 7, scope: !10) !48 = !DILocation(line: 16, column: 3, scope: !10) !49 = !DILocation(line: 17, column: 1, scope: !10) !50 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 19, type: !51, scopeLine: 19, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !14) !51 = !DISubroutineType(types: !52) !52 = !{!13} !53 = !DILocalVariable(name: "l", scope: !50, file: !1, line: 20, type: !13) !54 = !DILocation(line: 20, column: 7, scope: !50) !55 = !DILocalVariable(name: "k", scope: !50, file: !1, line: 20, type: !13) !56 = !DILocation(line: 20, column: 10, scope: !50) !57 = !DILocation(line: 21, column: 3, scope: !50) !58 = !DILocation(line: 22, column: 3, scope: !50) !59 = !DILocation(line: 23, column: 7, scope: !50) !60 = !DILocation(line: 23, column: 10, scope: !50) !61 = !DILocation(line: 23, column: 3, scope: !50) !62 = !DILocation(line: 24, column: 3, scope: !50)