1 ; Test ensuring debug intrinsics do not affect generated function prologue. 2 ; 3 ; RUN: llc -O1 -mtriple=x86_64-unknown-unknown -o - %s | FileCheck %s 4 5 @a = local_unnamed_addr global i64 0, align 8 6 7 define void @noDebug() { 8 entry: 9 %0 = load i64, i64* @a, align 8 10 %1 = load i64, i64* @a, align 8 11 %2 = load i64, i64* @a, align 8 12 %3 = tail call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %0, i64 %1) 13 %4 = extractvalue { i64, i1 } %3, 0 14 %5 = tail call i64 @fn1(i64 %4, i64 %2) 15 tail call void (...) @printf() 16 tail call void (...) @printf(i64 1, i64 2, i64 3, i64 4, i32 0, i64 0, i64 %4, i64 %5) 17 ret void 18 } 19 20 ; CHECK-LABEL: noDebug 21 ; CHECK: addq $24, %rsp 22 ; CHECK-NEXT: .cfi_adjust_cfa_offset -24 23 ; CHECK-NEXT: popq %rbx 24 ; CHECK-NEXT: .cfi_def_cfa_offset 16 25 ; CHECK-NEXT: popq %r14 26 ; CHECK-NEXT: .cfi_def_cfa_offset 8 27 ; CHECK-NEXT: retq 28 29 define void @withDebug() !dbg !18 { 30 entry: 31 %0 = load i64, i64* @a, align 8 32 %1 = load i64, i64* @a, align 8 33 %2 = load i64, i64* @a, align 8 34 %3 = tail call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %0, i64 %1) 35 %4 = extractvalue { i64, i1 } %3, 0 36 %5 = tail call i64 @fn1(i64 %4, i64 %2) 37 tail call void @llvm.dbg.value(metadata i64 %4, i64 0, metadata !23, metadata !33), !dbg !34 38 tail call void @llvm.dbg.value(metadata i64 %5, i64 0, metadata !22, metadata !33), !dbg !35 39 tail call void (...) @printf() 40 tail call void (...) @printf(i64 1, i64 2, i64 3, i64 4, i32 0, i64 0, i64 %4, i64 %5) 41 ret void 42 } 43 44 ; CHECK-LABEL: withDebug 45 ; CHECK: callq printf 46 ; CHECK: callq printf 47 ; CHECK-NEXT: addq $24, %rsp 48 ; CHECK-NEXT: .cfi_adjust_cfa_offset -24 49 ; CHECK-NEXT: popq %rbx 50 ; CHECK-NEXT: .cfi_def_cfa_offset 16 51 ; CHECK-NEXT: popq %r14 52 ; CHECK-NEXT: .cfi_def_cfa_offset 8 53 ; CHECK-NEXT: retq 54 55 declare { i64, i1 } @llvm.uadd.with.overflow.i64(i64, i64) 56 declare i64 @fn1(i64, i64) 57 58 declare void @printf(...) 59 60 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) 61 62 63 !llvm.dbg.cu = !{!1} 64 !llvm.module.flags = !{!15, !16} 65 66 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 4.0.0") 67 !2 = !DIFile(filename: "test.cpp", directory: "") 68 !11 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed) 69 !15 = !{i32 2, !"Dwarf Version", i32 4} 70 !16 = !{i32 2, !"Debug Info Version", i32 3} 71 !18 = distinct !DISubprogram(name: "test", scope: !2, file: !2, line: 5, unit: !1) 72 !22 = !DILocalVariable(name: "i", scope: !18, file: !2, line: 6, type: !11) 73 !23 = !DILocalVariable(name: "j", scope: !18, file: !2, line: 7, type: !11) 74 !33 = !DIExpression() 75 !34 = !DILocation(line: 7, column: 17, scope: !18) 76 !35 = !DILocation(line: 6, column: 8, scope: !18) 77 !36 = !DILocation(line: 9, column: 3, scope: !18) 78 !37 = !DILocation(line: 10, column: 10, scope: !18) 79
