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 define i64 @fn1NoDebug(i64 %a) { 6 %call = call i64 @fn(i64 %a, i64 0) 7 ret i64 %call 8 } 9 10 ; CHECK-LABEL: fn1NoDebug 11 ; CHECK: popq %rcx 12 ; CHECK-NEXT: .cfi_def_cfa_offset 8 13 ; CHECK-NEXT: ret 14 15 define 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 !7 18 ret i64 %call 19 } 20 21 ; CHECK-LABEL: fn1WithDebug 22 ; CHECK: popq %rcx 23 ; CHECK-NEXT: .cfi_def_cfa_offset 8 24 ; CHECK-NEXT: ret 25 26 %struct.Buffer = type { i8, [63 x i8] } 27 28 define void @fn2NoDebug(%struct.Buffer* byval align 64 %p1) { 29 ret void 30 } 31 32 ; CHECK-LABEL: fn2NoDebug 33 ; CHECK: and 34 ; CHECK-NOT: add 35 ; CHECK-NOT: sub 36 ; CHECK: mov 37 ; CHECK-NEXT: pop 38 ; CHECK-NEXT: .cfi_def_cfa %rsp, 8 39 ; CHECK-NEXT: ret 40 41 define void @fn2WithDebug(%struct.Buffer* byval align 64 %p1) !dbg !8 { 42 call void @llvm.dbg.declare(metadata %struct.Buffer* %p1, metadata !9, metadata !6), !dbg !10 43 ret void 44 } 45 46 ; CHECK-LABEL: fn2WithDebug 47 ; CHECK: and 48 ; CHECK-NOT: add 49 ; CHECK-NOT: sub 50 ; CHECK: mov 51 ; CHECK-NEXT: pop 52 ; CHECK-NEXT: .cfi_def_cfa %rsp, 8 53 ; CHECK-NEXT: ret 54 55 declare i64 @fn(i64, i64) 56 57 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) 58 declare 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
