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Add a separate testcase for a DWARF expression describing a value in a

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subregister.

llvm-svn: 215161
This commit is contained in:
Adrian Prantl 2014-08-07 22:44:34 +00:00
parent 4f83792a23
commit 6a3341989b
1 changed files with 63 additions and 0 deletions
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63
test/DebugInfo/ARM/s-super-register.ll Normal file
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; RUN: llc < %s - -filetype=obj | llvm-dwarfdump -debug-dump=loc - | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
target triple = "thumbv7-apple-macosx10.6.7"
; The S registers on ARM are expressed as pieces of their super-registers in DWARF.
;
; 0x90 DW_OP_regx of super-register
; 0x93 DW_OP_piece
; 0x9d DW_OP_bit_piece
; CHECK: Location description: 90 {{.. .. ((93 ..)|(9d .. ..))}}
define void @_Z3foov() optsize ssp {
entry:
%call = tail call float @_Z3barv() optsize, !dbg !11
tail call void @llvm.dbg.value(metadata !{float %call}, i64 0, metadata !5), !dbg !11
%call16 = tail call float @_Z2f2v() optsize, !dbg !12
%cmp7 = fcmp olt float %call, %call16, !dbg !12
br i1 %cmp7, label %for.body, label %for.end, !dbg !12
for.body: ; preds = %entry, %for.body
%k.08 = phi float [ %inc, %for.body ], [ %call, %entry ]
%call4 = tail call float @_Z2f3f(float %k.08) optsize, !dbg !13
%inc = fadd float %k.08, 1.000000e+00, !dbg !14
%call1 = tail call float @_Z2f2v() optsize, !dbg !12
%cmp = fcmp olt float %inc, %call1, !dbg !12
br i1 %cmp, label %for.body, label %for.end, !dbg !12
for.end: ; preds = %for.body, %entry
ret void, !dbg !15
}
declare float @_Z3barv() optsize
declare float @_Z2f2v() optsize
declare float @_Z2f3f(float) optsize
declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!20}
!0 = metadata !{i32 786449, metadata !18, i32 4, metadata !"clang version 3.0 (trunk 130845)", i1 true, metadata !"", i32 0, metadata !19, metadata !19, metadata !16, null, null, null, i32 1} ; [ DW_TAG_compile_unit ]
!1 = metadata !{i32 786478, metadata !18, metadata !2, metadata !"foo", metadata !"foo", metadata !"_Z3foov", i32 5, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void ()* @_Z3foov, null, null, metadata !17, i32 5} ; [ DW_TAG_subprogram ] [line 5] [def] [foo]
!2 = metadata !{i32 786473, metadata !18} ; [ DW_TAG_file_type ]
!3 = metadata !{i32 786453, metadata !18, 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 !{null}
!5 = metadata !{i32 786688, metadata !6, metadata !"k", metadata !2, i32 6, metadata !7, i32 0, null} ; [ DW_TAG_auto_variable ]
!6 = metadata !{i32 786443, metadata !18, metadata !1, i32 5, i32 12, i32 0} ; [ DW_TAG_lexical_block ]
!7 = metadata !{i32 786468, null, metadata !0, metadata !"float", i32 0, i64 32, i64 32, i64 0, i32 0, i32 4} ; [ DW_TAG_base_type ]
!8 = metadata !{i32 786688, metadata !9, metadata !"y", metadata !2, i32 8, metadata !7, i32 0, null} ; [ DW_TAG_auto_variable ]
!9 = metadata !{i32 786443, metadata !18, metadata !10, i32 7, i32 25, i32 2} ; [ DW_TAG_lexical_block ]
!10 = metadata !{i32 786443, metadata !18, metadata !6, i32 7, i32 3, i32 1} ; [ DW_TAG_lexical_block ]
!11 = metadata !{i32 6, i32 18, metadata !6, null}
!12 = metadata !{i32 7, i32 3, metadata !6, null}
!13 = metadata !{i32 8, i32 20, metadata !9, null}
!14 = metadata !{i32 7, i32 20, metadata !10, null}
!15 = metadata !{i32 10, i32 1, metadata !6, null}
!16 = metadata !{metadata !1}
!17 = metadata !{metadata !5, metadata !8}
!18 = metadata !{metadata !"k.cc", metadata !"/private/tmp"}
!19 = metadata !{i32 0}
!20 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}