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1; RUN: llc -O2 %s -o - -mtriple=x86_64-unknown-linux-gnu | FileCheck %s --check-prefix=OPTS2; RUN: llc -O0 %s -o - -mtriple=x86_64-unknown-linux-gnu | FileCheck %s --check-prefix=UNOPT3 4;; Test that, even though there are no source locations attached to the foo5;; function, we still give it the start-of-function source location of the6;; definition line. Otherwise, this function would have no entry in the7;; line table at all.8 9; OPTS-LABEL: foo:10; OPTS-NEXT: .Lfunc_begin0:11; OPTS-NEXT: .file 0 "." "foobar.c"12; OPTS-NEXT: .cfi_startproc13; OPTS-NEXT: # %bb.0:14; OPTS-NEXT: .loc 0 1 0 prologue_end15; OPTS-LABEL: bar:16 17define dso_local noundef i32 @foo(ptr nocapture noundef writeonly %bar) local_unnamed_addr !dbg !10 {18entry:19 store i32 0, ptr %bar, align 420 ret i32 021}22 23;; In a function with no source location, but multiple blocks, there will be24;; an opening scope-line. Test for this behaviour, and preserve the25;; unconditional branch by compiling -O0.26 27; UNOPT-LABEL: bar:28; UNOPT-NEXT: .Lfunc_begin1:29; UNOPT-NEXT: .cfi_startproc30; UNOPT-LABEL: %bb.0:31; UNOPT-NEXT: .loc 0 11 0 prologue_end32; UNOPT-NEXT: movq %rdi, -8(%rsp)33; UNOPT-NEXT: jmp .LBB1_134; UNOPT-LABEL: .LBB1_1:35; UNOPT-NEXT: movq -8(%rsp), %rax36 37define dso_local noundef i32 @bar(ptr nocapture noundef writeonly %baz) local_unnamed_addr !dbg !20 {38entry:39 br label %bb140bb1:41 store i32 0, ptr %baz, align 442 ret i32 043}44 45!llvm.dbg.cu = !{!0}46!llvm.module.flags = !{!2, !3}47!llvm.ident = !{!9}48 49!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)50!1 = !DIFile(filename: "foobar.c", directory: ".")51!2 = !{i32 7, !"Dwarf Version", i32 5}52!3 = !{i32 2, !"Debug Info Version", i32 3}53!9 = !{!"clang"}54!10 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !11, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)55!11 = !DISubroutineType(types: !12)56!12 = !{!13, !14}57!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)58!14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)59!15 = !{!16}60!16 = !DILocalVariable(name: "bar", arg: 1, scope: !10, file: !1, line: 1, type: !14)61!17 = !DILocation(line: 0, scope: !10)62!18 = !DILocation(line: 2, column: 8, scope: !10)63!20 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 11, type: !11, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !25)64!25 = !{!26}65!26 = !DILocalVariable(name: "bar", arg: 1, scope: !20, file: !1, line: 11, type: !14)66!27 = !DILocation(line: 0, scope: !20)67!28 = !DILocation(line: 12, column: 8, scope: !20)68 69