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1; Test ensuring debug intrinsics do not affect generated function prologue.2;3; RUN: llc -O1 -mtriple=x86_64-unknown-unknown -o - %s | FileCheck %s4 5define i64 @fn1NoDebug(i64 %a) {6 %call = call i64 @fn(i64 %a, i64 0)7 ret i64 %call8}9 10; CHECK-LABEL: fn1NoDebug11; CHECK: popq %rcx12; CHECK-NEXT: .cfi_def_cfa_offset 813; CHECK-NEXT: ret14 15define i64 @fn1WithDebug(i64 %a) !dbg !4 {16 %call = call i64 @fn(i64 %a, i64 0)17 tail call void @llvm.dbg.value(metadata i64 %call, i64 0, metadata !5, metadata !6), !dbg !718 ret i64 %call19}20 21; CHECK-LABEL: fn1WithDebug22; CHECK: popq %rcx23; CHECK-NEXT: .cfi_def_cfa_offset 824; CHECK-NEXT: ret25 26%struct.Buffer = type { i8, [63 x i8] }27 28define void @fn2NoDebug(ptr byval(%struct.Buffer) align 64 %p1) {29 ret void30}31 32; CHECK-LABEL: fn2NoDebug33; CHECK: and34; CHECK-NOT: add35; CHECK-NOT: sub36; CHECK: mov37; CHECK-NEXT: pop38; CHECK-NEXT: .cfi_def_cfa %rsp, 839; CHECK-NEXT: ret40 41define void @fn2WithDebug(ptr byval(%struct.Buffer) align 64 %p1) !dbg !8 {42 call void @llvm.dbg.declare(metadata ptr %p1, metadata !9, metadata !6), !dbg !1043 ret void44}45 46; CHECK-LABEL: fn2WithDebug47; CHECK: and48; CHECK-NOT: add49; CHECK-NOT: sub50; CHECK: mov51; CHECK-NEXT: pop52; CHECK-NEXT: .cfi_def_cfa %rsp, 853; CHECK-NEXT: ret54 55declare i64 @fn(i64, i64)56 57declare void @llvm.dbg.value(metadata, i64, metadata, metadata)58declare void @llvm.dbg.declare(metadata, metadata, metadata)59 60!llvm.dbg.cu = !{!0}61!llvm.module.flags = !{!2,!3}62 63!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0")64!1 = !DIFile(filename: "test.c", directory: "/")65!2 = !{i32 2, !"Dwarf Version", i32 4}66!3 = !{i32 2, !"Debug Info Version", i32 3}67!4 = distinct !DISubprogram(name: "withDebug", unit: !0)68!5 = !DILocalVariable(name: "w", scope: !4)69!6 = !DIExpression()70!7 = !DILocation(line: 210, column: 12, scope: !4)71!8 = distinct !DISubprogram(name: "withDebug", unit: !0)72!9 = !DILocalVariable(name: "w", scope: !8)73!10 = !DILocation(line: 210, column: 12, scope: !8)74