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llvm-6502/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll
David Blaikie 406658c31b DebugInfo: Fix a bunch of tests that, owing to their compile_unit metadata not including a 13th field, had some subtle behavior. 
Without the 13th field, the "emission kind" field defaults to 0 (which
is not equal to either of the values of the emission kind enum (1 ==
full debug info, 2 == line tables only)).

In this particular instance, the comparison with "FullDebugInfo" was
done when adding elements to the ranges list - so for these test cases
no values were added to the ranges list.

This got weirder when emitting debug_loc entries as the addresses should
be relative to the range of the CU if the CU has only one range (the
reasonable assumption is that if we're emitting debug_loc lists for a CU
that CU has at least one range - but due to the above situation, it has
zero) so the ranges were emitted relative to the start of the section
rather than relative to the start of the CU's singular range.

Fix these tests by accounting for the difference in the description of
debug_loc entries (in some cases making the test ignorant to these
differences, in others adding the extra label difference expression,
etc) or the presence/absence of high/low_pc on the CU, and add the 13th
field to their CUs to enable proper "full debug info" emission here.

In a future commit I'll fix up a bunch of other test cases that are not
so rigorously depending on this behavior, but still doing similarly
weird things due to the missing 13th field.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214937 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-05 23:57:31 +00:00

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; RUN: llc -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
; Check debug info output for merged global.
; DW_AT_location
; 0x03 DW_OP_addr
; 0x.. .long __MergedGlobals
; 0x10 DW_OP_constu
; 0x.. offset
; 0x22 DW_OP_plus
; CHECK: DW_TAG_variable
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name {{.*}} "x1"
; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK: DW_AT_location [DW_FORM_exprloc] (<0x8> 03 [[ADDR:.. .. .. ..]] 10 00 22 )
; CHECK: DW_TAG_variable
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name {{.*}} "x2"
; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK: DW_AT_location [DW_FORM_exprloc] (<0x8> 03 [[ADDR]] 10 04 22 )
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32"
target triple = "thumbv7-apple-macosx10.7.0"
@x1 = internal unnamed_addr global i32 1, align 4
@x2 = internal unnamed_addr global i32 2, align 4
@x3 = internal unnamed_addr global i32 3, align 4
@x4 = internal unnamed_addr global i32 4, align 4
@x5 = global i32 0, align 4
define i32 @get1(i32 %a) nounwind optsize ssp {
tail call void @llvm.dbg.value(metadata !{i32 %a}, i64 0, metadata !10), !dbg !30
%1 = load i32* @x1, align 4, !dbg !31
tail call void @llvm.dbg.value(metadata !{i32 %1}, i64 0, metadata !11), !dbg !31
store i32 %a, i32* @x1, align 4, !dbg !31
ret i32 %1, !dbg !31
}
define i32 @get2(i32 %a) nounwind optsize ssp {
tail call void @llvm.dbg.value(metadata !{i32 %a}, i64 0, metadata !13), !dbg !32
%1 = load i32* @x2, align 4, !dbg !33
tail call void @llvm.dbg.value(metadata !{i32 %1}, i64 0, metadata !14), !dbg !33
store i32 %a, i32* @x2, align 4, !dbg !33
ret i32 %1, !dbg !33
}
define i32 @get3(i32 %a) nounwind optsize ssp {
tail call void @llvm.dbg.value(metadata !{i32 %a}, i64 0, metadata !16), !dbg !34
%1 = load i32* @x3, align 4, !dbg !35
tail call void @llvm.dbg.value(metadata !{i32 %1}, i64 0, metadata !17), !dbg !35
store i32 %a, i32* @x3, align 4, !dbg !35
ret i32 %1, !dbg !35
}
define i32 @get4(i32 %a) nounwind optsize ssp {
tail call void @llvm.dbg.value(metadata !{i32 %a}, i64 0, metadata !19), !dbg !36
%1 = load i32* @x4, align 4, !dbg !37
tail call void @llvm.dbg.value(metadata !{i32 %1}, i64 0, metadata !20), !dbg !37
store i32 %a, i32* @x4, align 4, !dbg !37
ret i32 %1, !dbg !37
}
define i32 @get5(i32 %a) nounwind optsize ssp {
tail call void @llvm.dbg.value(metadata !{i32 %a}, i64 0, metadata !27), !dbg !38
%1 = load i32* @x5, align 4, !dbg !39
tail call void @llvm.dbg.value(metadata !{i32 %1}, i64 0, metadata !28), !dbg !39
store i32 %a, i32* @x5, align 4, !dbg !39
ret i32 %1, !dbg !39
}
declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!49}
!0 = metadata !{i32 786449, metadata !47, i32 12, metadata !"clang", i1 true, metadata !"", i32 0, metadata !48, metadata !48, metadata !40, metadata !41, metadata !48, null, i32 1} ; [ DW_TAG_compile_unit ]
!1 = metadata !{i32 786478, metadata !47, metadata !2, metadata !"get1", metadata !"get1", metadata !"", i32 5, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 (i32)* @get1, null, null, metadata !42, i32 5} ; [ DW_TAG_subprogram ] [line 5] [def] [get1]
!2 = metadata !{i32 786473, metadata !47} ; [ DW_TAG_file_type ]
!3 = metadata !{i32 786453, metadata !47, metadata !2, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !4, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!4 = metadata !{metadata !5}
!5 = metadata !{i32 786468, null, metadata !0, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
!6 = metadata !{i32 786478, metadata !47, metadata !2, metadata !"get2", metadata !"get2", metadata !"", i32 8, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 (i32)* @get2, null, null, metadata !43, i32 8} ; [ DW_TAG_subprogram ] [line 8] [def] [get2]
!7 = metadata !{i32 786478, metadata !47, metadata !2, metadata !"get3", metadata !"get3", metadata !"", i32 11, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 (i32)* @get3, null, null, metadata !44, i32 11} ; [ DW_TAG_subprogram ] [line 11] [def] [get3]
!8 = metadata !{i32 786478, metadata !47, metadata !2, metadata !"get4", metadata !"get4", metadata !"", i32 14, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 (i32)* @get4, null, null, metadata !45, i32 14} ; [ DW_TAG_subprogram ] [line 14] [def] [get4]
!9 = metadata !{i32 786478, metadata !47, metadata !2, metadata !"get5", metadata !"get5", metadata !"", i32 17, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 (i32)* @get5, null, null, metadata !46, i32 17} ; [ DW_TAG_subprogram ] [line 17] [def] [get5]
!10 = metadata !{i32 786689, metadata !1, metadata !"a", metadata !2, i32 16777221, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!11 = metadata !{i32 786688, metadata !12, metadata !"b", metadata !2, i32 5, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!12 = metadata !{i32 786443, metadata !47, metadata !1, i32 5, i32 19, i32 0} ; [ DW_TAG_lexical_block ]
!13 = metadata !{i32 786689, metadata !6, metadata !"a", metadata !2, i32 16777224, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!14 = metadata !{i32 786688, metadata !15, metadata !"b", metadata !2, i32 8, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!15 = metadata !{i32 786443, metadata !47, metadata !6, i32 8, i32 17, i32 1} ; [ DW_TAG_lexical_block ]
!16 = metadata !{i32 786689, metadata !7, metadata !"a", metadata !2, i32 16777227, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!17 = metadata !{i32 786688, metadata !18, metadata !"b", metadata !2, i32 11, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!18 = metadata !{i32 786443, metadata !47, metadata !7, i32 11, i32 19, i32 2} ; [ DW_TAG_lexical_block ]
!19 = metadata !{i32 786689, metadata !8, metadata !"a", metadata !2, i32 16777230, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!20 = metadata !{i32 786688, metadata !21, metadata !"b", metadata !2, i32 14, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!21 = metadata !{i32 786443, metadata !47, metadata !8, i32 14, i32 19, i32 3} ; [ DW_TAG_lexical_block ]
!25 = metadata !{i32 786484, i32 0, metadata !0, metadata !"x1", metadata !"x1", metadata !"", metadata !2, i32 4, metadata !5, i32 1, i32 1, i32* @x1, null} ; [ DW_TAG_variable ]
!26 = metadata !{i32 786484, i32 0, metadata !0, metadata !"x2", metadata !"x2", metadata !"", metadata !2, i32 7, metadata !5, i32 1, i32 1, i32* @x2, null} ; [ DW_TAG_variable ]
!27 = metadata !{i32 786689, metadata !9, metadata !"a", metadata !2, i32 16777233, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!28 = metadata !{i32 786688, metadata !29, metadata !"b", metadata !2, i32 17, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!29 = metadata !{i32 786443, metadata !47, metadata !9, i32 17, i32 19, i32 4} ; [ DW_TAG_lexical_block ]
!30 = metadata !{i32 5, i32 16, metadata !1, null}
!31 = metadata !{i32 5, i32 32, metadata !12, null}
!32 = metadata !{i32 8, i32 14, metadata !6, null}
!33 = metadata !{i32 8, i32 29, metadata !15, null}
!34 = metadata !{i32 11, i32 16, metadata !7, null}
!35 = metadata !{i32 11, i32 32, metadata !18, null}
!36 = metadata !{i32 14, i32 16, metadata !8, null}
!37 = metadata !{i32 14, i32 32, metadata !21, null}
!38 = metadata !{i32 17, i32 16, metadata !9, null}
!39 = metadata !{i32 17, i32 32, metadata !29, null}
!40 = metadata !{metadata !1, metadata !6, metadata !7, metadata !8, metadata !9}
!41 = metadata !{metadata !25, metadata !26}
!42 = metadata !{metadata !10, metadata !11}
!43 = metadata !{metadata !13, metadata !14}
!44 = metadata !{metadata !16, metadata !17}
!45 = metadata !{metadata !19, metadata !20}
!46 = metadata !{metadata !27, metadata !28}
!47 = metadata !{metadata !"ss3.c", metadata !"/private/tmp"}
!48 = metadata !{}
!49 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
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