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1; RUN: llc %s -mtriple=x86_64-unknown-unknown -use-unknown-locations=Enable -o - | FileCheck %s2 3; Generated with "clang -gline-tables-only -c -emit-llvm -o - | opt -passes=sroa -S"4; from source:5;6; extern int foo(int);7; extern int bar(int);8;9; int test(int a, int b) {10; if(b)11; a += foo(a);12; else13; a += bar(a);14; return a;15; }16 17; When tail-merging the debug location of the common tail should be removed.18 19; CHECK-LABEL: test:20; CHECK: movl %edi, [[REG:%.*]]21; CHECK: testl %esi, %esi22; CHECK: je [[ELSE:.LBB[0-9]+_[0-9]+]]23; CHECK: .loc 1 6 1024; CHECK: callq foo25; CHECK: jmp [[TAIL:.LBB[0-9]+_[0-9]+]]26; CHECK: [[ELSE]]:27; CHECK: .loc 1 8 1028; CHECK: callq bar29; CHECK: [[TAIL]]:30; CHECK: .loc 1 031; CHECK: addl [[REG]], %eax32; CHECK: .loc 1 9 333 34target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"35target triple = "x86_64-unknown-linux-gnu"36 37define i32 @test(i32 %a, i32 %b) !dbg !6 {38entry:39 %tobool = icmp ne i32 %b, 0, !dbg !840 br i1 %tobool, label %if.then, label %if.else, !dbg !841 42if.then: ; preds = %entry43 %call = call i32 @foo(i32 %a), !dbg !944 %add = add nsw i32 %a, %call, !dbg !1045 br label %if.end, !dbg !1146 47if.else: ; preds = %entry48 %call1 = call i32 @bar(i32 %a), !dbg !1249 %add2 = add nsw i32 %a, %call1, !dbg !1350 br label %if.end51 52if.end: ; preds = %if.else, %if.then53 %a.addr.0 = phi i32 [ %add, %if.then ], [ %add2, %if.else ]54 ret i32 %a.addr.0, !dbg !1455}56 57declare i32 @foo(i32)58declare i32 @bar(i32)59 60!llvm.dbg.cu = !{!0}61!llvm.module.flags = !{!3, !4}62 63!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)64!1 = !DIFile(filename: "test.c", directory: "")65!2 = !{}66!3 = !{i32 2, !"Dwarf Version", i32 4}67!4 = !{i32 2, !"Debug Info Version", i32 3}68!6 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 4, type: !7, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)69!7 = !DISubroutineType(types: !2)70!8 = !DILocation(line: 5, column: 6, scope: !6)71!9 = !DILocation(line: 6, column: 10, scope: !6)72!10 = !DILocation(line: 6, column: 7, scope: !6)73!11 = !DILocation(line: 6, column: 5, scope: !6)74!12 = !DILocation(line: 8, column: 10, scope: !6)75!13 = !DILocation(line: 8, column: 7, scope: !6)76!14 = !DILocation(line: 9, column: 3, scope: !6)77