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llvm-mirror/test/CodeGen/ARM/debug-info-arg.ll
David Blaikie f3d2951503 Debug Info: Simplify Frame Index handling in DBG_VALUE Machine Instructions
Rather than using the full power of target-specific addressing modes in
DBG_VALUEs with Frame Indicies, simply use Frame Index + Offset. This
reduces the complexity of debug info handling down to two
representations of values (reg+offset and frame index+offset) rather
than three or four.

Ideally we could ensure that frame indicies had been eliminated by the
time we reached an assembly or dwarf generation, but I haven't spent the
time to figure out where the FIs are leaking through into that & whether
there's a good place to convert them. Some FI+offset=>reg+offset
conversion is done (see PrologEpilogInserter, for example) which is
necessary for some SelectionDAG assumptions about registers, I believe,
but it might be possible to make this a more thorough conversion &
ensure there are no remaining FIs no matter how instruction selection
is performed.

llvm-svn: 184066
2013-06-16 20:34:15 +00:00

67 lines
5.1 KiB
LLVM

; RUN: llc < %s | FileCheck %s
; Test to check argument y's debug info uses FI
; Radar 10048772
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-ios"
%struct.tag_s = type { i32, i32, i32 }
define void @foo(%struct.tag_s* nocapture %this, %struct.tag_s* %c, i64 %x, i64 %y, %struct.tag_s* nocapture %ptr1, %struct.tag_s* nocapture %ptr2) nounwind ssp {
tail call void @llvm.dbg.value(metadata !{%struct.tag_s* %this}, i64 0, metadata !5), !dbg !20
tail call void @llvm.dbg.value(metadata !{%struct.tag_s* %c}, i64 0, metadata !13), !dbg !21
tail call void @llvm.dbg.value(metadata !{i64 %x}, i64 0, metadata !14), !dbg !22
tail call void @llvm.dbg.value(metadata !{i64 %y}, i64 0, metadata !17), !dbg !23
;CHECK: @DEBUG_VALUE: foo:y <- [R7+8]
tail call void @llvm.dbg.value(metadata !{%struct.tag_s* %ptr1}, i64 0, metadata !18), !dbg !24
tail call void @llvm.dbg.value(metadata !{%struct.tag_s* %ptr2}, i64 0, metadata !19), !dbg !25
%1 = icmp eq %struct.tag_s* %c, null, !dbg !26
br i1 %1, label %3, label %2, !dbg !26
; <label>:2 ; preds = %0
tail call void @foobar(i64 %x, i64 %y) nounwind, !dbg !28
br label %3, !dbg !28
; <label>:3 ; preds = %0, %2
ret void, !dbg !29
}
declare void @foobar(i64, i64)
declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
!llvm.dbg.cu = !{!0}
!0 = metadata !{i32 786449, metadata !32, i32 12, metadata !"Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)", i1 true, metadata !"", i32 0, null, null, metadata !30, null, null, null} ; [ DW_TAG_compile_unit ]
!1 = metadata !{i32 786478, metadata !2, metadata !2, metadata !"foo", metadata !"foo", metadata !"", i32 11, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 true, void (%struct.tag_s*, %struct.tag_s*, i64, i64, %struct.tag_s*, %struct.tag_s*)* @foo, null, null, metadata !31, i32 11} ; [ DW_TAG_subprogram ]
!2 = metadata !{i32 786473, metadata !32} ; [ DW_TAG_file_type ]
!3 = metadata !{i32 786453, metadata !32, metadata !2, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
!4 = metadata !{null}
!5 = metadata !{i32 786689, metadata !1, metadata !"this", metadata !2, i32 16777227, metadata !6, i32 0, null} ; [ DW_TAG_arg_variable ]
!6 = metadata !{i32 786447, null, metadata !0, metadata !"", i32 0, i64 32, i64 32, i64 0, i32 0, metadata !7} ; [ DW_TAG_pointer_type ]
!7 = metadata !{i32 786451, metadata !32, metadata !0, metadata !"tag_s", i32 5, i64 96, i64 32, i32 0, i32 0, i32 0, metadata !8, i32 0, i32 0} ; [ DW_TAG_structure_type ]
!8 = metadata !{metadata !9, metadata !11, metadata !12}
!9 = metadata !{i32 786445, metadata !32, metadata !7, metadata !"x", i32 6, i64 32, i64 32, i64 0, i32 0, metadata !10} ; [ DW_TAG_member ]
!10 = metadata !{i32 786468, null, metadata !0, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
!11 = metadata !{i32 786445, metadata !32, metadata !7, metadata !"y", i32 7, i64 32, i64 32, i64 32, i32 0, metadata !10} ; [ DW_TAG_member ]
!12 = metadata !{i32 786445, metadata !32, metadata !7, metadata !"z", i32 8, i64 32, i64 32, i64 64, i32 0, metadata !10} ; [ DW_TAG_member ]
!13 = metadata !{i32 786689, metadata !1, metadata !"c", metadata !2, i32 33554443, metadata !6, i32 0, null} ; [ DW_TAG_arg_variable ]
!14 = metadata !{i32 786689, metadata !1, metadata !"x", metadata !2, i32 50331659, metadata !15, i32 0, null} ; [ DW_TAG_arg_variable ]
!15 = metadata !{i32 786454, metadata !32, metadata !0, metadata !"UInt64", i32 1, i64 0, i64 0, i64 0, i32 0, metadata !16} ; [ DW_TAG_typedef ]
!16 = metadata !{i32 786468, null, metadata !0, metadata !"long long unsigned int", i32 0, i64 64, i64 32, i64 0, i32 0, i32 7} ; [ DW_TAG_base_type ]
!17 = metadata !{i32 786689, metadata !1, metadata !"y", metadata !2, i32 67108875, metadata !15, i32 0, null} ; [ DW_TAG_arg_variable ]
!18 = metadata !{i32 786689, metadata !1, metadata !"ptr1", metadata !2, i32 83886091, metadata !6, i32 0, null} ; [ DW_TAG_arg_variable ]
!19 = metadata !{i32 786689, metadata !1, metadata !"ptr2", metadata !2, i32 100663307, metadata !6, i32 0, null} ; [ DW_TAG_arg_variable ]
!20 = metadata !{i32 11, i32 24, metadata !1, null}
!21 = metadata !{i32 11, i32 44, metadata !1, null}
!22 = metadata !{i32 11, i32 54, metadata !1, null}
!23 = metadata !{i32 11, i32 64, metadata !1, null}
!24 = metadata !{i32 11, i32 81, metadata !1, null}
!25 = metadata !{i32 11, i32 101, metadata !1, null}
!26 = metadata !{i32 12, i32 3, metadata !27, null}
!27 = metadata !{i32 786443, metadata !1, i32 11, i32 107, metadata !2, i32 0} ; [ DW_TAG_lexical_block ]
!28 = metadata !{i32 13, i32 5, metadata !27, null}
!29 = metadata !{i32 14, i32 1, metadata !27, null}
!30 = metadata !{metadata !1}
!31 = metadata !{metadata !5, metadata !13, metadata !14, metadata !17, metadata !18, metadata!19}
!32 = metadata !{metadata !"one.c", metadata !"/Volumes/Athwagate/R10048772"}