1 ; RUN: llc < %s -march=x86-64 -mtriple=x86_64-unknown-unknown -mcpu=generic | FileCheck %s
2 ; Both functions should produce the same code. The presence of debug values
3 ; should not affect the scheduling strategy.
8 ; int test(char ,char ,char ,...);
13 ; c.test(0,argc,0,lc);
14 ; c.test(0,argc,0,lc);
18 ; clang -O2 -c test.cpp -emit-llvm -S
19 ; clang -O2 -c test.cpp -emit-llvm -S -g
23 %class.C = type { i8 }
25 @argc = global i8 0, align 1
27 declare i32 @test_function(%class.C*, i8 signext, i8 signext, i8 signext, ...)
29 ; CHECK-LABEL: test_without_debug
30 ; CHECK: movl [[A:%[a-z]+]], [[B:%[a-z]+]]
31 ; CHECK-NEXT: movl [[A]], [[C:%[a-z]+]]
32 define void @test_without_debug() {
34 %c = alloca %class.C, align 1
35 %0 = load i8, i8* @argc, align 1
36 %conv = sext i8 %0 to i32
37 %call = call i32 (%class.C*, i8, i8, i8, ...) @test_function(%class.C* %c, i8 signext 0, i8 signext %0, i8 signext 0, i32 %conv)
38 %1 = load i8, i8* @argc, align 1
39 %call2 = call i32 (%class.C*, i8, i8, i8, ...) @test_function(%class.C* %c, i8 signext 0, i8 signext %1, i8 signext 0, i32 %conv)
43 ; CHECK-LABEL: test_with_debug
44 ; CHECK: movl [[A]], [[B]]
45 ; CHECK-NEXT: movl [[A]], [[C]]
46 define void @test_with_debug() !dbg !13 {
48 %c = alloca %class.C, align 1
49 %0 = load i8, i8* @argc, align 1
50 tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !19, metadata !29), !dbg !DILocation(scope: !13)
51 %conv = sext i8 %0 to i32
52 tail call void @llvm.dbg.value(metadata %class.C* %c, i64 0, metadata !18, metadata !DIExpression(DW_OP_deref)), !dbg !DILocation(scope: !13)
53 %call = call i32 (%class.C*, i8, i8, i8, ...) @test_function(%class.C* %c, i8 signext 0, i8 signext %0, i8 signext 0, i32 %conv)
54 %1 = load i8, i8* @argc, align 1
55 call void @llvm.dbg.value(metadata %class.C* %c, i64 0, metadata !18, metadata !DIExpression(DW_OP_deref)), !dbg !DILocation(scope: !13)
56 %call2 = call i32 (%class.C*, i8, i8, i8, ...) @test_function(%class.C* %c, i8 signext 0, i8 signext %1, i8 signext 0, i32 %conv)
60 declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
63 !llvm.module.flags = !{!22, !23}
65 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, enums: !2, retainedTypes: !3, subprograms: !12, globals: !20, imports: !2)
66 !1 = !DIFile(filename: "test.cpp", directory: "")
69 !4 = !DICompositeType(tag: DW_TAG_class_type, name: "C", line: 2, size: 8, align: 8, file: !1, elements: !5, identifier: "_ZTS1C")
71 !6 = !DISubprogram(name: "test", file: !1, scope: !"_ZTS1C", type: !7, isDefinition: false)
72 !7 = !DISubroutineType(types: !8)
73 !8 = !{!9, !10, !11, !11, !11, null}
74 !9 = !DIBasicType(encoding: DW_ATE_signed, size: 32, align: 32, name: "int")
75 !10 = !DIDerivedType(baseType: !"_ZTS1C", tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial)
76 !11 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
78 !13 = distinct !DISubprogram(name: "test_with_debug", linkageName: "test_with_debug", line: 6, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !1, scope: !14, type: !15, variables: !17)
79 !14 = !DIFile(filename: "test.cpp", directory: "")
80 !15 = !DISubroutineType(types: !16)
83 !18 = !DILocalVariable(name: "c", line: 7, scope: !13, file: !14, type: !"_ZTS1C")
84 !19 = !DILocalVariable(name: "lc", line: 8, scope: !13, file: !14, type: !11)
86 !21 = !DIGlobalVariable(name: "argc", line: 1, isLocal: false, isDefinition: true, scope: null, file: !14, type: !11, variable: i8* @argc)
87 !22 = !{i32 2, !"Dwarf Version", i32 4}
88 !23 = !{i32 2, !"Debug Info Version", i32 3}
89 !25 = !DILocation(line: 8, column: 3, scope: !13)