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() {
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)
51 %conv = sext i8 %0 to i32
52 tail call void @llvm.dbg.value(metadata %class.C* %c, i64 0, metadata !18, metadata !29)
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 !29)
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 = !{!"", !1, !2, !3, !12, !20, !2} ; [ DW_TAG_compile_unit ] [test.cpp] [DW_LANG_C_plus_plus]
66 !1 = !{!"test.cpp", !""}
69 !4 = !{!"0x2\00C\002\008\008\000\000\000", !1, null, null, !5, null, null, !"_ZTS1C"} ; [ DW_TAG_class_type ] [C] [line 2, size 8, align 8, offset 0] [def] [from ]
71 !6 = !{!"", !1, !"_ZTS1C", !7, null, null, null, null, null} ; [ DW_TAG_subprogram ] [line 4] [public] [test]
72 !7 = !{!"", null, null, null, !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
73 !8 = !{!9, !10, !11, !11, !11, null}
74 !9 = !{!"", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
75 !10 = !{!"", null, null, !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1C]
76 !11 = !{!"0x24\00char\000\008\008\000\000\006", null, null} ; [ DW_TAG_base_type ] [char] [line 0, size 8, align 8, offset 0, enc DW_ATE_signed_char]
78 !13 = !{!"0x2e\00test_with_debug\00test_with_debug\00test_with_debug\006\000\001\000\000\00256\001\006", !1, !14, !15, null, void ()* @test_with_debug, null, null, !17} ; [ DW_TAG_subprogram ] [line 6] [def] [test_with_debug]
80 !15 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !16, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
83 !18 = !{!"0x100\00c\007\000", !13, !14, !"_ZTS1C"} ; [ DW_TAG_auto_variable ] [c] [line 7]
84 !19 = !{!"0x100\00lc\008\000", !13, !14, !11} ; [ DW_TAG_auto_variable ] [lc] [line 8]
86 !21 = !{!"0x34\00argc\00argc\00\001\000\001", null, !14, !11, i8* @argc, null} ; [ DW_TAG_variable ] [argc] [line 1] [def]
87 !22 = !{i32 2, !"Dwarf Version", i32 4}
88 !23 = !{i32 2, !"Debug Info Version", i32 2}
89 !25 = !MDLocation(line: 8, column: 3, scope: !13)
90 !29 = !{!"0x102"} ; [ DW_TAG_expression ]