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| 1 | +; RUN: llc %s -mtriple=x86_64-unknown-unknown -use-unknown-locations=true -o - | FileCheck %s |
| 2 | + |
| 3 | +; Generated with "clang -gline-tables-only -c -emit-llvm -o - | opt -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 | +; else |
| 13 | +; 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, %esi |
| 22 | +; CHECK: je [[ELSE:.LBB[0-9]+_[0-9]+]] |
| 23 | +; CHECK: .loc 1 6 10 |
| 24 | +; CHECK: callq foo |
| 25 | +; CHECK: jmp [[TAIL:.LBB[0-9]+_[0-9]+]] |
| 26 | +; CHECK: [[ELSE]]: |
| 27 | +; CHECK: .loc 1 8 10 |
| 28 | +; CHECK: callq bar |
| 29 | +; CHECK: [[TAIL]]: |
| 30 | +; CHECK: .loc 1 0 0 |
| 31 | +; CHECK: addl [[REG]], %eax |
| 32 | +; CHECK: .loc 1 9 3 |
| 33 | + |
| 34 | +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| 35 | +target triple = "x86_64-unknown-linux-gnu" |
| 36 | + |
| 37 | +define i32 @test(i32 %a, i32 %b) !dbg !6 { |
| 38 | +entry: |
| 39 | + %tobool = icmp ne i32 %b, 0, !dbg !8 |
| 40 | + br i1 %tobool, label %if.then, label %if.else, !dbg !8 |
| 41 | + |
| 42 | +if.then: ; preds = %entry |
| 43 | + %call = call i32 @foo(i32 %a), !dbg !9 |
| 44 | + %add = add nsw i32 %a, %call, !dbg !10 |
| 45 | + br label %if.end, !dbg !11 |
| 46 | + |
| 47 | +if.else: ; preds = %entry |
| 48 | + %call1 = call i32 @bar(i32 %a), !dbg !12 |
| 49 | + %add2 = add nsw i32 %a, %call1, !dbg !13 |
| 50 | + br label %if.end |
| 51 | + |
| 52 | +if.end: ; preds = %if.else, %if.then |
| 53 | + %a.addr.0 = phi i32 [ %add, %if.then ], [ %add2, %if.else ] |
| 54 | + ret i32 %a.addr.0, !dbg !14 |
| 55 | +} |
| 56 | + |
| 57 | +declare i32 @foo(i32) |
| 58 | +declare 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, variables: !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) |
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