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llvm/test/Linker/type-unique-type-array-a.ll
Duncan P. N. Exon Smith 83902832de Revert "Revert "DI: Fold constant arguments into a single MDString"" 
This reverts commit r218918, effectively reapplying r218914 after fixing
an Ocaml bindings test and an Asan crash.  The root cause of the latter
was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a
PR to investigate who requires the loose check (and why).

Original commit message follows.

--

This patch addresses the first stage of PR17891 by folding constant
arguments together into a single MDString.  Integers are stringified and
a `\0` character is used as a separator.

Part of PR17891.

Note: I've attached my testcases upgrade scripts to the PR.  If I've
just broken your out-of-tree testcases, they might help.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219010 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-03 20:01:09 +00:00

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; REQUIRES: object-emission
;
; RUN: llvm-link %s %p/type-unique-type-array-b.ll -S -o - | %llc_dwarf -filetype=obj -O0 | llvm-dwarfdump -debug-dump=info - | FileCheck %s
;
; rdar://problem/17628609
;
; cat -n a.cpp
; 1 struct SA {
; 2 int a;
; 3 };
; 4
; 5 class A {
; 6 public:
; 7 void testA(SA a) {
; 8 }
; 9 };
; 10
; 11 void topA(A *a, SA sa) {
; 12 a->testA(sa);
; 13 }
;
; CHECK: DW_TAG_compile_unit
; CHECK: DW_TAG_class_type
; CHECK-NEXT: DW_AT_name {{.*}} "A"
; CHECK: DW_TAG_subprogram
; CHECK: DW_AT_MIPS_linkage_name {{.*}} "_ZN1A5testAE2SA"
; CHECK: DW_TAG_formal_parameter
; CHECK: DW_TAG_formal_parameter
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (cu + 0x{{.*}} => {0x[[STRUCT:.*]]})
; CHECK: 0x[[STRUCT]]: DW_TAG_structure_type
; CHECK-NEXT: DW_AT_name {{.*}} "SA"
; CHECK: DW_TAG_compile_unit
; CHECK: DW_TAG_class_type
; CHECK-NEXT: DW_AT_name {{.*}} "B"
; CHECK: DW_TAG_subprogram
; CHECK: DW_AT_MIPS_linkage_name {{.*}} "_ZN1B5testBE2SA"
; CHECK: DW_TAG_formal_parameter
; CHECK: DW_TAG_formal_parameter
; CHECK-NEXT: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[STRUCT]]
%class.A = type { i8 }
%struct.SA = type { i32 }
; Function Attrs: ssp uwtable
define void @_Z4topAP1A2SA(%class.A* %a, i32 %sa.coerce) #0 {
entry:
%sa = alloca %struct.SA, align 4
%a.addr = alloca %class.A*, align 8
%agg.tmp = alloca %struct.SA, align 4
%coerce.dive = getelementptr %struct.SA* %sa, i32 0, i32 0
store i32 %sa.coerce, i32* %coerce.dive
store %class.A* %a, %class.A** %a.addr, align 8
call void @llvm.dbg.declare(metadata !{%class.A** %a.addr}, metadata !24, metadata !{metadata !"0x102"}), !dbg !25
call void @llvm.dbg.declare(metadata !{%struct.SA* %sa}, metadata !26, metadata !{metadata !"0x102"}), !dbg !27
%0 = load %class.A** %a.addr, align 8, !dbg !28
%1 = bitcast %struct.SA* %agg.tmp to i8*, !dbg !28
%2 = bitcast %struct.SA* %sa to i8*, !dbg !28
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 4, i32 4, i1 false), !dbg !28
%coerce.dive1 = getelementptr %struct.SA* %agg.tmp, i32 0, i32 0, !dbg !28
%3 = load i32* %coerce.dive1, !dbg !28
call void @_ZN1A5testAE2SA(%class.A* %0, i32 %3), !dbg !28
ret void, !dbg !29
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
; Function Attrs: nounwind ssp uwtable
define linkonce_odr void @_ZN1A5testAE2SA(%class.A* %this, i32 %a.coerce) #2 align 2 {
entry:
%a = alloca %struct.SA, align 4
%this.addr = alloca %class.A*, align 8
%coerce.dive = getelementptr %struct.SA* %a, i32 0, i32 0
store i32 %a.coerce, i32* %coerce.dive
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata !{%class.A** %this.addr}, metadata !30, metadata !{metadata !"0x102"}), !dbg !31
call void @llvm.dbg.declare(metadata !{%struct.SA* %a}, metadata !32, metadata !{metadata !"0x102"}), !dbg !33
%this1 = load %class.A** %this.addr
ret void, !dbg !34
}
; Function Attrs: nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #3
attributes #0 = { ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone }
attributes #2 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!21, !22}
!llvm.ident = !{!23}
!0 = metadata !{metadata !"0x11\004\00clang version 3.5.0 (trunk 214102:214113M) (llvm/trunk 214102:214115M)\000\00\000\00\001", metadata !1, metadata !2, metadata !3, metadata !14, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [a.cpp] [DW_LANG_C_plus_plus]
!1 = metadata !{metadata !"a.cpp", metadata !"/Users/manmanren/test-Nov/type_unique/rdar_di_array"}
!2 = metadata !{}
!3 = metadata !{metadata !4, metadata !10}
!4 = metadata !{metadata !"0x2\00A\005\008\008\000\000\000", metadata !1, null, null, metadata !5, null, null, metadata !"_ZTS1A"} ; [ DW_TAG_class_type ] [A] [line 5, size 8, align 8, offset 0] [def] [from ]
!5 = metadata !{metadata !6}
!6 = metadata !{metadata !"0x2e\00testA\00testA\00_ZN1A5testAE2SA\007\000\000\000\006\00256\000\007", metadata !1, metadata !"_ZTS1A", metadata !7, null, null, null, i32 0, null} ; [ DW_TAG_subprogram ] [line 7] [testA]
!7 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!8 = metadata !{null, metadata !9, metadata !"_ZTS2SA"}
!9 = metadata !{metadata !"0xf\00\000\0064\0064\000\001088", null, null, metadata !"_ZTS1A"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1A]
!10 = metadata !{metadata !"0x13\00SA\001\0032\0032\000\000\000", metadata !1, null, null, metadata !11, null, null, metadata !"_ZTS2SA"} ; [ DW_TAG_structure_type ] [SA] [line 1, size 32, align 32, offset 0] [def] [from ]
!11 = metadata !{metadata !12}
!12 = metadata !{metadata !"0xd\00a\002\0032\0032\000\000", metadata !1, metadata !"_ZTS2SA", metadata !13} ; [ DW_TAG_member ] [a] [line 2, size 32, align 32, offset 0] [from int]
!13 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
!14 = metadata !{metadata !15, metadata !20}
!15 = metadata !{metadata !"0x2e\00topA\00topA\00_Z4topAP1A2SA\0011\000\001\000\006\00256\000\0011", metadata !1, metadata !16, metadata !17, null, void (%class.A*, i32)* @_Z4topAP1A2SA, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 11] [def] [topA]
!16 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [a.cpp]
!17 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !18, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!18 = metadata !{null, metadata !19, metadata !"_ZTS2SA"}
!19 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", null, null, metadata !"_ZTS1A"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1A]
!20 = metadata !{metadata !"0x2e\00testA\00testA\00_ZN1A5testAE2SA\007\000\001\000\006\00256\000\007", metadata !1, metadata !"_ZTS1A", metadata !7, null, void (%class.A*, i32)* @_ZN1A5testAE2SA, null, metadata !6, metadata !2} ; [ DW_TAG_subprogram ] [line 7] [def] [testA]
!21 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
!22 = metadata !{i32 2, metadata !"Debug Info Version", i32 2}
!23 = metadata !{metadata !"clang version 3.5.0 (trunk 214102:214113M) (llvm/trunk 214102:214115M)"}
!24 = metadata !{metadata !"0x101\00a\0016777227\000", metadata !15, metadata !16, metadata !19} ; [ DW_TAG_arg_variable ] [a] [line 11]
!25 = metadata !{i32 11, i32 14, metadata !15, null}
!26 = metadata !{metadata !"0x101\00sa\0033554443\000", metadata !15, metadata !16, metadata !"_ZTS2SA"} ; [ DW_TAG_arg_variable ] [sa] [line 11]
!27 = metadata !{i32 11, i32 20, metadata !15, null}
!28 = metadata !{i32 12, i32 3, metadata !15, null}
!29 = metadata !{i32 13, i32 1, metadata !15, null}
!30 = metadata !{metadata !"0x101\00this\0016777216\001088", metadata !20, null, metadata !19} ; [ DW_TAG_arg_variable ] [this] [line 0]
!31 = metadata !{i32 0, i32 0, metadata !20, null}
!32 = metadata !{metadata !"0x101\00a\0033554439\000", metadata !20, metadata !16, metadata !"_ZTS2SA"} ; [ DW_TAG_arg_variable ] [a] [line 7]
!33 = metadata !{i32 7, i32 17, metadata !20, null}
!34 = metadata !{i32 8, i32 3, metadata !20, null}
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