forked from OSchip/llvm-project
91 lines
3.9 KiB
LLVM
91 lines
3.9 KiB
LLVM
; RUN: llc < %s -march=x86-64 -mtriple=x86_64-unknown-unknown -mcpu=generic | FileCheck %s
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; Both functions should produce the same code. The presence of debug values
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; should not affect the scheduling strategy.
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; Generated from:
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; char argc;
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; class C {
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; public:
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; int test(char ,char ,char ,...);
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; };
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; void foo() {
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; C c;
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; char lc = argc;
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; c.test(0,argc,0,lc);
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; c.test(0,argc,0,lc);
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; }
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;
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; with
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; clang -O2 -c test.cpp -emit-llvm -S
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; clang -O2 -c test.cpp -emit-llvm -S -g
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;
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%class.C = type { i8 }
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@argc = global i8 0, align 1
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declare i32 @test_function(%class.C*, i8 signext, i8 signext, i8 signext, ...)
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; CHECK-LABEL: test_without_debug
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; CHECK: movl [[A:%[a-z]+]], [[B:%[a-z]+]]
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; CHECK-NEXT: movl [[A]], [[C:%[a-z]+]]
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define void @test_without_debug() {
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entry:
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%c = alloca %class.C, align 1
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%0 = load i8* @argc, align 1
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%conv = sext i8 %0 to i32
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%call = call i32 (%class.C*, i8, i8, i8, ...)* @test_function(%class.C* %c, i8 signext 0, i8 signext %0, i8 signext 0, i32 %conv)
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%1 = load i8* @argc, align 1
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%call2 = call i32 (%class.C*, i8, i8, i8, ...)* @test_function(%class.C* %c, i8 signext 0, i8 signext %1, i8 signext 0, i32 %conv)
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ret void
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}
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; CHECK-LABEL: test_with_debug
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; CHECK: movl [[A]], [[B]]
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; CHECK-NEXT: movl [[A]], [[C]]
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define void @test_with_debug() {
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entry:
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%c = alloca %class.C, align 1
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%0 = load i8* @argc, align 1
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tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !19, metadata !29)
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%conv = sext i8 %0 to i32
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tail call void @llvm.dbg.value(metadata %class.C* %c, i64 0, metadata !18, metadata !29)
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%call = call i32 (%class.C*, i8, i8, i8, ...)* @test_function(%class.C* %c, i8 signext 0, i8 signext %0, i8 signext 0, i32 %conv)
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%1 = load i8* @argc, align 1
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call void @llvm.dbg.value(metadata %class.C* %c, i64 0, metadata !18, metadata !29)
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%call2 = call i32 (%class.C*, i8, i8, i8, ...)* @test_function(%class.C* %c, i8 signext 0, i8 signext %1, i8 signext 0, i32 %conv)
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ret void
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}
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!22, !23}
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!0 = !{!"", !1, !2, !3, !12, !20, !2} ; [ DW_TAG_compile_unit ] [test.cpp] [DW_LANG_C_plus_plus]
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!1 = !{!"test.cpp", !""}
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!2 = !{}
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!3 = !{!4}
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!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 ]
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!5 = !{!6}
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!6 = !{!"", !1, !"_ZTS1C", !7, null, null, null, null, null} ; [ DW_TAG_subprogram ] [line 4] [public] [test]
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!7 = !{!"", null, null, null, !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!8 = !{!9, !10, !11, !11, !11, null}
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!9 = !{!"", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
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!10 = !{!"", null, null, !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1C]
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!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]
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!12 = !{!13}
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!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]
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!14 = !{!"0x29", !1}
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!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 ]
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!16 = !{null}
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!17 = !{!18, !19}
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!18 = !{!"0x100\00c\007\000", !13, !14, !"_ZTS1C"} ; [ DW_TAG_auto_variable ] [c] [line 7]
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!19 = !{!"0x100\00lc\008\000", !13, !14, !11} ; [ DW_TAG_auto_variable ] [lc] [line 8]
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!20 = !{!21}
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!21 = !{!"0x34\00argc\00argc\00\001\000\001", null, !14, !11, i8* @argc, null} ; [ DW_TAG_variable ] [argc] [line 1] [def]
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!22 = !{i32 2, !"Dwarf Version", i32 4}
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!23 = !{i32 2, !"Debug Info Version", i32 2}
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!25 = !{i32 8, i32 3, !13, null}
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!29 = !{!"0x102"} ; [ DW_TAG_expression ]
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