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llvm-project/llvm/test/DebugInfo/Mips/dsr-fixed-objects.ll

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[DebugInfo][test][MIPS] Use mtriple in tests Mips tests are using -march in RUN lines, this will fail on AIX OS , when we get the mips-ibm-aix triple. This is caused/exposed recently due to https://reviews.llvm.org/D101194 changed the default getMultiarchTriple in toolchain. Update the tests to use -mtriple instead to avoid unintended failures. Reviewed By: atanasyan Differential Revision: https://reviews.llvm.org/D101863
2021-05-05 21:51:02 +08:00
; RUN: llc -mtriple=mips -mcpu=mips32r2 -O1 -filetype=obj -relocation-model=pic <%s | \
llvm-dwarfdump: Make -brief the default and add a -verbose option instead. Differential Revision: https://reviews.llvm.org/D37717 llvm-svn: 312972
2017-09-12 07:05:20 +08:00
; RUN: llvm-dwarfdump -v -all - | FileCheck %s
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
; void foo(int *);
;
; int f0(int a, int b, int c, int d, int e) {
; int x = a + b + c + d + e;
; foo(&x);
; return x;
; }
;
; int f1(int a, int b, int c, int d, int e) {
; int x __attribute__((aligned(16))) = a + b + c + d + e;
; foo(&x);
; return x;
; }
declare void @llvm.lifetime.start(i64, i8* nocapture)
declare void @llvm.lifetime.end(i64, i8* nocapture)
declare void @foo(i32*)
[DebugInfo] LowerDbgDeclare: Add derefs when handling CallInst users LowerDbgDeclare inserts a dbg.value before each use of an address described by a dbg.declare. When inserting a dbg.value before a CallInst use, however, it fails to append DW_OP_deref to the DIExpression. The DW_OP_deref is needed to reflect the fact that a dbg.value describes a source variable directly (as opposed to a dbg.declare, which relies on pointer indirection). This patch adds in the DW_OP_deref where needed. This results in the correct values being shown during a debug session for a program compiled with ASan and optimizations (see https://reviews.llvm.org/D49520). Note that ConvertDebugDeclareToDebugValue is already correct -- no changes there were needed. One complication is that SelectionDAG is unable to distinguish between direct and indirect frame-index (FRAMEIX) SDDbgValues. This patch also fixes this long-standing issue in order to not regress integration tests relying on the incorrect assumption that all frame-index SDDbgValues are indirect. This is a necessary fix: the newly-added DW_OP_derefs cannot be lowered properly otherwise. Basically the fix prevents a direct SDDbgValue with DIExpression(DW_OP_deref) from being dereferenced twice by a debugger. There were a handful of tests relying on this incorrect "FRAMEIX => indirect" assumption which actually had incorrect DW_AT_locations: these are all fixed up in this patch. Testing: - check-llvm, and an end-to-end test using lldb to debug an optimized program. - Existing unit tests for DIExpression::appendToStack fully cover the new DIExpression::append utility. - check-debuginfo (the debug info integration tests) Differential Revision: https://reviews.llvm.org/D49454 llvm-svn: 338069
2018-07-27 04:56:53 +08:00
; CHECK: DW_AT_name {{.*}}"f0"
[dwarfdump] Pretty print location expressions and location lists Summary: Based on Fred's patch here: https://reviews.llvm.org/D6771 I can't seem to commandeer the old review, so I'm creating a new one. With that change the locations exrpessions are pretty printed inline in the DIE tree. The output looks like this for debug_loc entries: DW_AT_location [DW_FORM_data4] (0x00000000 0x0000000000000001 - 0x000000000000000b: DW_OP_consts +3 0x000000000000000b - 0x0000000000000012: DW_OP_consts +7 0x0000000000000012 - 0x000000000000001b: DW_OP_reg0 RAX, DW_OP_piece 0x4 0x000000000000001b - 0x0000000000000024: DW_OP_breg5 RDI+0) And like this for debug_loc.dwo entries: DW_AT_location [DW_FORM_sec_offset] (0x00000000 Addr idx 2 (w/ length 190): DW_OP_consts +0, DW_OP_stack_value Addr idx 3 (w/ length 23): DW_OP_reg0 RAX, DW_OP_piece 0x4) Simple locations without ranges are printed inline: DW_AT_location [DW_FORM_block1] (DW_OP_reg4 RSI, DW_OP_piece 0x4, DW_OP_bit_piece 0x20 0x0) The debug_loc(.dwo) dumping in changed accordingly to factor the code. Reviewers: dblaikie, aprantl, friss Subscribers: mgorny, javed.absar, hiraditya, llvm-commits, JDevlieghere Differential Revision: https://reviews.llvm.org/D37123 llvm-svn: 312042
2017-08-30 05:41:21 +08:00
; CHECK: DW_AT_name {{.*}}"e"
; CHECK: DW_TAG_variable
; CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] (
Re-commit "DWARF location lists: Add section index dumping" This reapplies c0f6ad7d1f3ccb9d0b9ce9ef8dfa06409ccf1b3e with an additional fix in test/DebugInfo/X86/constant-loclist.ll, which had a slightly different output on windows targets. The test now accounts for this difference. The original commit message follows. Summary: As discussed in D70081, this adds the ability to dump section names/indices to the location list dumper. It does this by moving the range specific logic from DWARFDie.cpp:dumpRanges into the DWARFAddressRange class. The trickiest part of this patch is the backflip in the meanings of the two dump flags for the location list sections. The dumping of "raw" location list data is now controlled by "DisplayRawContents" flag. This frees up the "Verbose" flag to be used to control whether we print the section index. Additionally, the DisplayRawContents flag is set for section-based dumps whenever the --verbose option is passed, but this is not done for the "inline" dumps. Also note that the index dumping currently does not work for the DWARF v5 location lists, as the parser does not fill out the appropriate fields. This will be done in a separate patch. Reviewers: dblaikie, probinson, JDevlieghere, SouraVX Subscribers: sdardis, hiraditya, jrtc27, atanasyan, arphaman, aprantl, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D70227
2019-11-14 18:22:00 +08:00
; CHECK-NEXT: [0x00000028, 0x0000002c) ".text": DW_OP_reg1 AT_64
; CHECK-NEXT: [0x0000002c, 0x00000048) ".text": DW_OP_breg29 SP_64+16)
[dwarfdump] Pretty print location expressions and location lists Summary: Based on Fred's patch here: https://reviews.llvm.org/D6771 I can't seem to commandeer the old review, so I'm creating a new one. With that change the locations exrpessions are pretty printed inline in the DIE tree. The output looks like this for debug_loc entries: DW_AT_location [DW_FORM_data4] (0x00000000 0x0000000000000001 - 0x000000000000000b: DW_OP_consts +3 0x000000000000000b - 0x0000000000000012: DW_OP_consts +7 0x0000000000000012 - 0x000000000000001b: DW_OP_reg0 RAX, DW_OP_piece 0x4 0x000000000000001b - 0x0000000000000024: DW_OP_breg5 RDI+0) And like this for debug_loc.dwo entries: DW_AT_location [DW_FORM_sec_offset] (0x00000000 Addr idx 2 (w/ length 190): DW_OP_consts +0, DW_OP_stack_value Addr idx 3 (w/ length 23): DW_OP_reg0 RAX, DW_OP_piece 0x4) Simple locations without ranges are printed inline: DW_AT_location [DW_FORM_block1] (DW_OP_reg4 RSI, DW_OP_piece 0x4, DW_OP_bit_piece 0x20 0x0) The debug_loc(.dwo) dumping in changed accordingly to factor the code. Reviewers: dblaikie, aprantl, friss Subscribers: mgorny, javed.absar, hiraditya, llvm-commits, JDevlieghere Differential Revision: https://reviews.llvm.org/D37123 llvm-svn: 312042
2017-08-30 05:41:21 +08:00
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x0000006b] = "x")
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
define i32 @f0(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d, i32 signext %e) !dbg !4 {
entry:
%x = alloca i32, align 4
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
tail call void @llvm.dbg.value(metadata i32 %a, metadata !9, metadata !DIExpression()), !dbg !27
tail call void @llvm.dbg.value(metadata i32 %b, metadata !10, metadata !DIExpression()), !dbg !28
tail call void @llvm.dbg.value(metadata i32 %c, metadata !11, metadata !DIExpression()), !dbg !29
tail call void @llvm.dbg.value(metadata i32 %d, metadata !12, metadata !DIExpression()), !dbg !30
tail call void @llvm.dbg.value(metadata i32 %e, metadata !13, metadata !DIExpression()), !dbg !31
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
%0 = bitcast i32* %x to i8*, !dbg !32
call void @llvm.lifetime.start(i64 4, i8* %0) #4, !dbg !32
%add = add nsw i32 %b, %a, !dbg !33
%add1 = add nsw i32 %add, %c, !dbg !34
%add2 = add nsw i32 %add1, %d, !dbg !35
%add3 = add nsw i32 %add2, %e, !dbg !36
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
tail call void @llvm.dbg.value(metadata i32 %add3, metadata !14, metadata !DIExpression()), !dbg !37
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
store i32 %add3, i32* %x, align 4, !dbg !37, !tbaa !38
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
tail call void @llvm.dbg.value(metadata i32* %x, metadata !14, metadata !26), !dbg !37
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
call void @foo(i32* nonnull %x) #4, !dbg !42
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
call void @llvm.dbg.value(metadata i32* %x, metadata !14, metadata !26), !dbg !37
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
%1 = load i32, i32* %x, align 4, !dbg !43, !tbaa !38
call void @llvm.lifetime.end(i64 4, i8* %0) #4, !dbg !44
ret i32 %1, !dbg !45
}
[dwarfdump] Pretty print location expressions and location lists Summary: Based on Fred's patch here: https://reviews.llvm.org/D6771 I can't seem to commandeer the old review, so I'm creating a new one. With that change the locations exrpessions are pretty printed inline in the DIE tree. The output looks like this for debug_loc entries: DW_AT_location [DW_FORM_data4] (0x00000000 0x0000000000000001 - 0x000000000000000b: DW_OP_consts +3 0x000000000000000b - 0x0000000000000012: DW_OP_consts +7 0x0000000000000012 - 0x000000000000001b: DW_OP_reg0 RAX, DW_OP_piece 0x4 0x000000000000001b - 0x0000000000000024: DW_OP_breg5 RDI+0) And like this for debug_loc.dwo entries: DW_AT_location [DW_FORM_sec_offset] (0x00000000 Addr idx 2 (w/ length 190): DW_OP_consts +0, DW_OP_stack_value Addr idx 3 (w/ length 23): DW_OP_reg0 RAX, DW_OP_piece 0x4) Simple locations without ranges are printed inline: DW_AT_location [DW_FORM_block1] (DW_OP_reg4 RSI, DW_OP_piece 0x4, DW_OP_bit_piece 0x20 0x0) The debug_loc(.dwo) dumping in changed accordingly to factor the code. Reviewers: dblaikie, aprantl, friss Subscribers: mgorny, javed.absar, hiraditya, llvm-commits, JDevlieghere Differential Revision: https://reviews.llvm.org/D37123 llvm-svn: 312042
2017-08-30 05:41:21 +08:00
; CHECK: DW_TAG_variable
; CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] (
Re-commit "DWARF location lists: Add section index dumping" This reapplies c0f6ad7d1f3ccb9d0b9ce9ef8dfa06409ccf1b3e with an additional fix in test/DebugInfo/X86/constant-loclist.ll, which had a slightly different output on windows targets. The test now accounts for this difference. The original commit message follows. Summary: As discussed in D70081, this adds the ability to dump section names/indices to the location list dumper. It does this by moving the range specific logic from DWARFDie.cpp:dumpRanges into the DWARFAddressRange class. The trickiest part of this patch is the backflip in the meanings of the two dump flags for the location list sections. The dumping of "raw" location list data is now controlled by "DisplayRawContents" flag. This frees up the "Verbose" flag to be used to control whether we print the section index. Additionally, the DisplayRawContents flag is set for section-based dumps whenever the --verbose option is passed, but this is not done for the "inline" dumps. Also note that the index dumping currently does not work for the DWARF v5 location lists, as the parser does not fill out the appropriate fields. This will be done in a separate patch. Reviewers: dblaikie, probinson, JDevlieghere, SouraVX Subscribers: sdardis, hiraditya, jrtc27, atanasyan, arphaman, aprantl, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D70227
2019-11-14 18:22:00 +08:00
; CHECK-NEXT: [0x00000080, 0x00000084) ".text": DW_OP_reg1 AT_64
; CHECK-NEXT: [0x00000084, 0x00000098) ".text": DW_OP_breg29 SP_64+16)
[dwarfdump] Pretty print location expressions and location lists Summary: Based on Fred's patch here: https://reviews.llvm.org/D6771 I can't seem to commandeer the old review, so I'm creating a new one. With that change the locations exrpessions are pretty printed inline in the DIE tree. The output looks like this for debug_loc entries: DW_AT_location [DW_FORM_data4] (0x00000000 0x0000000000000001 - 0x000000000000000b: DW_OP_consts +3 0x000000000000000b - 0x0000000000000012: DW_OP_consts +7 0x0000000000000012 - 0x000000000000001b: DW_OP_reg0 RAX, DW_OP_piece 0x4 0x000000000000001b - 0x0000000000000024: DW_OP_breg5 RDI+0) And like this for debug_loc.dwo entries: DW_AT_location [DW_FORM_sec_offset] (0x00000000 Addr idx 2 (w/ length 190): DW_OP_consts +0, DW_OP_stack_value Addr idx 3 (w/ length 23): DW_OP_reg0 RAX, DW_OP_piece 0x4) Simple locations without ranges are printed inline: DW_AT_location [DW_FORM_block1] (DW_OP_reg4 RSI, DW_OP_piece 0x4, DW_OP_bit_piece 0x20 0x0) The debug_loc(.dwo) dumping in changed accordingly to factor the code. Reviewers: dblaikie, aprantl, friss Subscribers: mgorny, javed.absar, hiraditya, llvm-commits, JDevlieghere Differential Revision: https://reviews.llvm.org/D37123 llvm-svn: 312042
2017-08-30 05:41:21 +08:00
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x0000006b] = "x")
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
define i32 @f1(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d, i32 signext %e) !dbg !15 {
entry:
%x = alloca i32, align 16
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
tail call void @llvm.dbg.value(metadata i32 %a, metadata !17, metadata !DIExpression()), !dbg !46
tail call void @llvm.dbg.value(metadata i32 %b, metadata !18, metadata !DIExpression()), !dbg !47
tail call void @llvm.dbg.value(metadata i32 %c, metadata !19, metadata !DIExpression()), !dbg !48
tail call void @llvm.dbg.value(metadata i32 %d, metadata !20, metadata !DIExpression()), !dbg !49
tail call void @llvm.dbg.value(metadata i32 %e, metadata !21, metadata !DIExpression()), !dbg !50
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
%0 = bitcast i32* %x to i8*, !dbg !51
call void @llvm.lifetime.start(i64 4, i8* %0) #4, !dbg !51
%add = add nsw i32 %b, %a, !dbg !52
%add1 = add nsw i32 %add, %c, !dbg !53
%add2 = add nsw i32 %add1, %d, !dbg !54
%add3 = add nsw i32 %add2, %e, !dbg !55
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
tail call void @llvm.dbg.value(metadata i32 %add3, metadata !22, metadata !DIExpression()), !dbg !56
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
store i32 %add3, i32* %x, align 16, !dbg !56, !tbaa !38
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
tail call void @llvm.dbg.value(metadata i32* %x, metadata !22, metadata !26), !dbg !56
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
call void @foo(i32* nonnull %x) #4, !dbg !57
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
call void @llvm.dbg.value(metadata i32* %x, metadata !22, metadata !26), !dbg !56
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
%1 = load i32, i32* %x, align 16, !dbg !58, !tbaa !38
call void @llvm.lifetime.end(i64 4, i8* %0) #4, !dbg !59
ret i32 %1, !dbg !60
}
Remove the obsolete offset parameter from @llvm.dbg.value There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
2017-07-29 04:21:02 +08:00
declare void @llvm.dbg.value(metadata, metadata, metadata)
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!23, !24}
!llvm.ident = !{!25}
[PR27284] Reverse the ownership between DICompileUnit and DISubprogram. Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446
2016-04-15 23:57:41 +08:00
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 251783) (llvm/trunk 251781)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
!1 = !DIFile(filename: "test.c", directory: "/home/vk/repos/tmp/dwarf")
!2 = !{}
[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
2018-05-09 10:40:45 +08:00
!4 = distinct !DISubprogram(name: "f0", scope: !1, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !8)
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
!5 = !DISubroutineType(types: !6)
!6 = !{!7, !7, !7, !7, !7, !7}
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = !{!9, !10, !11, !12, !13, !14}
!9 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 4, type: !7)
!10 = !DILocalVariable(name: "b", arg: 2, scope: !4, file: !1, line: 4, type: !7)
!11 = !DILocalVariable(name: "c", arg: 3, scope: !4, file: !1, line: 4, type: !7)
!12 = !DILocalVariable(name: "d", arg: 4, scope: !4, file: !1, line: 4, type: !7)
!13 = !DILocalVariable(name: "e", arg: 5, scope: !4, file: !1, line: 4, type: !7)
!14 = !DILocalVariable(name: "x", scope: !4, file: !1, line: 5, type: !7)
[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
2018-05-09 10:40:45 +08:00
!15 = distinct !DISubprogram(name: "f1", scope: !1, file: !1, line: 11, type: !5, isLocal: false, isDefinition: true, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !16)
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
!16 = !{!17, !18, !19, !20, !21, !22}
!17 = !DILocalVariable(name: "a", arg: 1, scope: !15, file: !1, line: 11, type: !7)
!18 = !DILocalVariable(name: "b", arg: 2, scope: !15, file: !1, line: 11, type: !7)
!19 = !DILocalVariable(name: "c", arg: 3, scope: !15, file: !1, line: 11, type: !7)
!20 = !DILocalVariable(name: "d", arg: 4, scope: !15, file: !1, line: 11, type: !7)
!21 = !DILocalVariable(name: "e", arg: 5, scope: !15, file: !1, line: 11, type: !7)
!22 = !DILocalVariable(name: "x", scope: !15, file: !1, line: 12, type: !7)
!23 = !{i32 2, !"Dwarf Version", i32 4}
!24 = !{i32 2, !"Debug Info Version", i32 3}
!25 = !{!"clang version 3.8.0 (trunk 251783) (llvm/trunk 251781)"}
Clean up the processing of dbg.value in various places Summary: First up is instcombine, where in the dbg.declare -> dbg.value conversion, the llvm.dbg.value needs to be called on the actual loaded value, rather than the address (since the whole point of this transformation is to be able to get rid of the alloca). Further, now that that's cleaned up, we can remove a hack in the backend, that would add an implicit OP_deref if the argument to dbg.value was an alloca. This stems from before the existence of DIExpression and is no longer necessary since the deref can be expressed explicitly. Now, in order to make sure that the tests pass with this change, we need to correct the printing of DEBUG_VALUE comments to take into account the expression, which wasn't taken into account before. Unfortunately, for both these changes, there were a number of incorrect test cases (mostly the wrong number of DW_OP_derefs, but also a couple where the test itself was broken more badly). aprantl and I have gone through and adjusted these test case in order to make them pass with these fixes and in some cases to make sure they're actually testing what they are meant to test. Reviewers: aprantl Subscribers: dsanders Differential Revision: http://reviews.llvm.org/D14186 llvm-svn: 256077
2015-12-19 10:02:44 +08:00
!26 = !DIExpression(DW_OP_deref)
Re-apply "[mips] Use correct frame register for DWARF info when dynamically realigning the stack."" r252219 reversed the direction of subprogram -> function edge. Fixed the IR to account for this. llvm-svn: 252895
2015-11-12 22:11:43 +08:00
!27 = !DILocation(line: 4, column: 12, scope: !4)
!28 = !DILocation(line: 4, column: 19, scope: !4)
!29 = !DILocation(line: 4, column: 26, scope: !4)
!30 = !DILocation(line: 4, column: 33, scope: !4)
!31 = !DILocation(line: 4, column: 40, scope: !4)
!32 = !DILocation(line: 5, column: 3, scope: !4)
!33 = !DILocation(line: 5, column: 13, scope: !4)
!34 = !DILocation(line: 5, column: 17, scope: !4)
!35 = !DILocation(line: 5, column: 21, scope: !4)
!36 = !DILocation(line: 5, column: 25, scope: !4)
!37 = !DILocation(line: 5, column: 7, scope: !4)
!38 = !{!39, !39, i64 0}
!39 = !{!"int", !40, i64 0}
!40 = !{!"omnipotent char", !41, i64 0}
!41 = !{!"Simple C/C++ TBAA"}
!42 = !DILocation(line: 6, column: 3, scope: !4)
!43 = !DILocation(line: 7, column: 10, scope: !4)
!44 = !DILocation(line: 8, column: 1, scope: !4)
!45 = !DILocation(line: 7, column: 3, scope: !4)
!46 = !DILocation(line: 11, column: 12, scope: !15)
!47 = !DILocation(line: 11, column: 19, scope: !15)
!48 = !DILocation(line: 11, column: 26, scope: !15)
!49 = !DILocation(line: 11, column: 33, scope: !15)
!50 = !DILocation(line: 11, column: 40, scope: !15)
!51 = !DILocation(line: 12, column: 3, scope: !15)
!52 = !DILocation(line: 12, column: 42, scope: !15)
!53 = !DILocation(line: 12, column: 46, scope: !15)
!54 = !DILocation(line: 12, column: 50, scope: !15)
!55 = !DILocation(line: 12, column: 54, scope: !15)
!56 = !DILocation(line: 12, column: 7, scope: !15)
!57 = !DILocation(line: 13, column: 3, scope: !15)
!58 = !DILocation(line: 14, column: 10, scope: !15)
!59 = !DILocation(line: 15, column: 1, scope: !15)
!60 = !DILocation(line: 14, column: 3, scope: !15)