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llvm-project/llvm/test/DebugInfo/X86/dbg-value-const-byref.ll

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DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
; RUN: llc -O1 -filetype=obj -o - %s | llvm-dwarfdump -debug-dump=all - | FileCheck %s
; Generated with -O1 from:
; int f1();
; void f2(int*);
; int f3(int);
;
; int foo() {
; int i = 3;
; f3(i);
; i = 7;
; i = f1();
; f2(&i);
; return 0;
; }
;
; Test that we generate valid debug info for optimized code,
Fix some doc and comment typos llvm-svn: 205899
2014-04-09 22:47:27 +08:00
; particularly variables that are described as constants and passed
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
; by reference.
; rdar://problem/14874886
;
; CHECK: .debug_info contents:
; CHECK: DW_TAG_variable
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_location [DW_FORM_data4] ([[LOC:.*]])
DebugInfo: Following up to r209677, refactor local variable emission to delay the choice between emitting the definition attributes or using DW_AT_abstract_definition This doesn't fix the abstract variable handling yet, but it introduces a similar delay mechanism as was added for subprograms, causing DW_AT_location to be reordered to the beginning of the attribute list for local variables, and fixes all the test fallout for that. A subsequent commit will remove the abstract variable handling in DbgVariable and just do the abstract variable lookup at module end to ensure that abstract variables introduced after their concrete counterparts are appropriately referenced by the concrete variable. llvm-svn: 210943
2014-06-14 06:18:23 +08:00
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}"i"
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
; CHECK: .debug_loc contents:
; CHECK: [[LOC]]:
Debug info: Store the DIVariable in DebugLocEntry also for constants, so DwarfDebug::emitDebugLocEntry can emit them with the correct signedness. rdar://problem/15928306 llvm-svn: 206042
2014-04-12 01:49:47 +08:00
; consts 0x00000003
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
; CHECK: Beginning address offset: 0x0000000000000{{.*}}
; CHECK: Ending address offset: [[C1:.*]]
Debug info: Store the DIVariable in DebugLocEntry also for constants, so DwarfDebug::emitDebugLocEntry can emit them with the correct signedness. rdar://problem/15928306 llvm-svn: 206042
2014-04-12 01:49:47 +08:00
; CHECK: Location description: 11 03
; consts 0x00000007
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
; CHECK: Beginning address offset: [[C1]]
; CHECK: Ending address offset: [[C2:.*]]
Debug info: Store the DIVariable in DebugLocEntry also for constants, so DwarfDebug::emitDebugLocEntry can emit them with the correct signedness. rdar://problem/15928306 llvm-svn: 206042
2014-04-12 01:49:47 +08:00
; CHECK: Location description: 11 07
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
; rax, piece 0x00000004
; CHECK: Beginning address offset: [[C2]]
; CHECK: Ending address offset: [[R1:.*]]
; CHECK: Location description: 50 93 04
This reapplies r207235 with an additional bugfixes caught by the msan buildbot - do not insert debug intrinsics before phi nodes. Debug info for optimized code: Support variables that are on the stack and described by DBG_VALUEs during their lifetime. Previously, when a variable was at a FrameIndex for any part of its lifetime, this would shadow all other DBG_VALUEs and only a single fbreg location would be emitted, which in fact is only valid for a small range and not the entire lexical scope of the variable. The included dbg-value-const-byref testcase demonstrates this. This patch fixes this by Local - emitting dbg.value intrinsics for allocas that are passed by reference - dropping all dbg.declares (they are now fully lowered to dbg.values) SelectionDAG - renamed constructors for SDDbgValue for better readability. - fix UserValue::match() to handle indirect values correctly - not inserting an MMI table entries for dbg.values that describe allocas. - lowering dbg.values that describe allocas into *indirect* DBG_VALUEs. CodeGenPrepare - leaving dbg.values for an alloca were they are (see comment) Other - regenerated/updated instcombine.ll testcase and included source rdar://problem/16679879 http://reviews.llvm.org/D3374 llvm-svn: 207269
2014-04-26 04:49:25 +08:00
; rdi+0
; CHECK: Beginning address offset: [[R1]]
; CHECK: Ending address offset: [[R2:.*]]
; CHECK: Location description: 75 00
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
;
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.9.0"
; Function Attrs: nounwind ssp uwtable
define i32 @foo() #0 {
entry:
%i = alloca i32, align 4
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
call void @llvm.dbg.value(metadata !14, i64 0, metadata !10, metadata !{metadata !"0x102"}), !dbg !15
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
%call = call i32 @f3(i32 3) #3, !dbg !16
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
call void @llvm.dbg.value(metadata !17, i64 0, metadata !10, metadata !{metadata !"0x102"}), !dbg !18
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
%call1 = call i32 (...)* @f1() #3, !dbg !19
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
call void @llvm.dbg.value(metadata !{i32 %call1}, i64 0, metadata !10, metadata !{metadata !"0x102"}), !dbg !19
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
store i32 %call1, i32* %i, align 4, !dbg !19, !tbaa !20
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
call void @llvm.dbg.value(metadata !{i32* %i}, i64 0, metadata !10, metadata !{metadata !"0x102"}), !dbg !24
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
call void @f2(i32* %i) #3, !dbg !24
ret i32 0, !dbg !25
}
declare i32 @f3(i32)
declare i32 @f1(...)
declare void @f2(i32*)
; Function Attrs: nounwind readnone
Move the complex address expression out of DIVariable and into an extra argument of the llvm.dbg.declare/llvm.dbg.value intrinsics. Previously, DIVariable was a variable-length field that has an optional reference to a Metadata array consisting of a variable number of complex address expressions. In the case of OpPiece expressions this is wasting a lot of storage in IR, because when an aggregate type is, e.g., SROA'd into all of its n individual members, the IR will contain n copies of the DIVariable, all alike, only differing in the complex address reference at the end. By making the complex address into an extra argument of the dbg.value/dbg.declare intrinsics, all of the pieces can reference the same variable and the complex address expressions can be uniqued across the CU, too. Down the road, this will allow us to move other flags, such as "indirection" out of the DIVariable, too. The new intrinsics look like this: declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr) declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr) This patch adds a new LLVM-local tag to DIExpressions, so we can detect and pretty-print DIExpression metadata nodes. What this patch doesn't do: This patch does not touch the "Indirect" field in DIVariable; but moving that into the expression would be a natural next step. http://reviews.llvm.org/D4919 rdar://problem/17994491 Thanks to dblaikie and dexonsmith for reviewing this patch! Note: I accidentally committed a bogus older version of this patch previously. llvm-svn: 218787
2014-10-02 02:55:02 +08:00
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
attributes #0 = { nounwind ssp uwtable }
attributes #2 = { nounwind readnone }
attributes #3 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!11, !12}
!llvm.ident = !{!13}
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!0 = metadata !{metadata !"0x11\0012\00clang version 3.5.0 \001\00\000\00\001", metadata !1, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [dbg-value-const-byref.c] [DW_LANG_C99]
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
!1 = metadata !{metadata !"dbg-value-const-byref.c", metadata !""}
!2 = metadata !{}
!3 = metadata !{metadata !4}
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!4 = metadata !{metadata !"0x2e\00foo\00foo\00\005\000\001\000\006\000\001\005", metadata !1, metadata !5, metadata !6, null, i32 ()* @foo, null, null, metadata !9} ; [ DW_TAG_subprogram ] [line 5] [def] [foo]
!5 = metadata !{metadata !"0x29", metadata !1} ; [ DW_TAG_file_type ] [dbg-value-const-byref.c]
!6 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
!7 = metadata !{metadata !8}
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!8 = 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]
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
!9 = metadata !{metadata !10}
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!10 = metadata !{metadata !"0x100\00i\006\000", metadata !4, metadata !5, metadata !8} ; [ DW_TAG_auto_variable ] [i] [line 6]
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
!11 = metadata !{i32 2, metadata !"Dwarf Version", i32 2}
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!12 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
!13 = metadata !{metadata !"clang version 3.5.0 "}
!14 = metadata !{i32 3}
!15 = metadata !{i32 6, i32 0, metadata !4, null}
!16 = metadata !{i32 7, i32 0, metadata !4, null}
!17 = metadata !{i32 7}
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. llvm-svn: 219010
2014-10-04 04:01:09 +08:00
!18 = metadata !{i32 8, i32 0, metadata !4, null}
DwarfDebug: Prevent DebugLocEntry merging from coalescing two different constants into only the first one. rdar://14874886. llvm-svn: 205357
2014-04-02 05:04:18 +08:00
!19 = metadata !{i32 9, i32 0, metadata !4, null}
!20 = metadata !{metadata !21, metadata !21, i64 0}
!21 = metadata !{metadata !"int", metadata !22, i64 0}
!22 = metadata !{metadata !"omnipotent char", metadata !23, i64 0}
!23 = metadata !{metadata !"Simple C/C++ TBAA"}
!24 = metadata !{i32 10, i32 0, metadata !4, null}
!25 = metadata !{i32 11, i32 0, metadata !4, null}