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llvm-project/llvm/test/DebugInfo/MIR/X86/live-debug-values-3preds.mir

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When printing MIR, output to errs() rather than outs(). Summary: Without this, this command $ llvm-run llc -stop-after machine-cp -o - <( echo '' ) outputs an error, because we close stdout twice -- once when closing the file opened for "-o", and again when closing outs(). Also clarify in the outs() definition that you can't ever call it if you want to open your own raw_fd_ostream on stdout. Reviewers: jroelofs, tstellarAMD Subscribers: jholewinski, qcolombet, dsanders, llvm-commits Differential Revision: http://reviews.llvm.org/D17422 llvm-svn: 261286
2016-02-19 08:18:46 +08:00
# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o /dev/null %s 2>&1 | FileCheck %s
Recommit LiveDebugValues pass after fixing a couple of minor issues. llvm-svn: 255759
2015-12-16 19:09:48 +08:00
# Test the extension of debug ranges from 3 predecessors.
# Generated from the source file LiveDebugValues-3preds.c:
# #include <stdio.h>
# int add(int x, int y, int z, int a) {
# int i;
# for (i = 0; i < x * y; i++) {
# if (i < x) {
# a = a * x;
# break;
# }
# if (i < y) {
# a = a * y;
# break;
# }
# if (i < z) {
# a = a * z;
# break;
# }
# }
# return a;
# }
# with clang -g -O1 -c -emit-llvm LiveDebugValues-3preds.c -S -o live-debug-values-3preds.ll
# then llc -stop-after stackmap-liveness live-debug-values-3preds.ll -o /dev/null > live-debug-values-3preds.mir
# DBG_VALUE for variables "x", "y" and "z" are extended into BB#9 from its
# predecessors BB#0, BB#2 and BB#8.
# CHECK: bb.9.for.end:
PR26055: Speed up LiveDebugValues by replacing lists with bitvectors. This patch modifies the LiveDebugValues pass to use more efficient set data structures as outlined in PR26055. Both VarLocSet and VarLocList are now SparseBitVectors which allows us to perform much faster bitvector arithmetic on them. The speedup can be in the order of minutes especially on ASANified code. The change is not NFC in the assembler output because the inserted DBG_VALUEs are now sorted by variable and location. Many thanks to Daniel Berlin for helping design the improved algorithm and reviewing the patch. https://llvm.org/bugs/show_bug.cgi?id=26055 http://reviews.llvm.org/D20178 rdar://problem/24091200 llvm-svn: 270776
2016-05-26 06:21:12 +08:00
# CHECK-DAG: DBG_VALUE debug-use %edi, debug-use _, !11, !16, debug-location !17
# CHECK-DAG: DBG_VALUE debug-use %edx, debug-use _, !13, !16, debug-location !20
# CHECK-DAG: DBG_VALUE debug-use %esi, debug-use _, !12, !16, debug-location !18
# CHECK: RET
Recommit LiveDebugValues pass after fixing a couple of minor issues. llvm-svn: 255759
2015-12-16 19:09:48 +08:00
--- |
; ModuleID = 'live-debug-values-3preds.ll'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: norecurse nounwind readnone uwtable
define i32 @add(i32 %x, i32 %y, i32 %z, i32 %a) #0 !dbg !4 {
entry:
tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !9, metadata !17), !dbg !18
tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !10, metadata !17), !dbg !19
tail call void @llvm.dbg.value(metadata i32 %z, i64 0, metadata !11, metadata !17), !dbg !21
tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !12, metadata !17), !dbg !23
tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !13, metadata !17), !dbg !25
%mul = mul nsw i32 %y, %x, !dbg !26
%cmp.24 = icmp sgt i32 %mul, 0, !dbg !30
br i1 %cmp.24, label %for.body.preheader, label %for.end, !dbg !31
for.body.preheader: ; preds = %entry
br label %for.body, !dbg !32
for.cond: ; preds = %if.end.6
%cmp = icmp slt i32 %inc, %mul, !dbg !30
br i1 %cmp, label %for.body, label %for.end, !dbg !31
for.body: ; preds = %for.cond, %for.body.preheader
%i.025 = phi i32 [ %inc, %for.cond ], [ 0, %for.body.preheader ]
%0 = icmp sgt i32 %x, 0
br i1 %0, label %if.then, label %if.end, !dbg !35
if.then: ; preds = %for.body
%mul2 = mul nsw i32 %a, %x, !dbg !36
tail call void @llvm.dbg.value(metadata i32 %mul2, i64 0, metadata !12, metadata !17), !dbg !23
br label %for.end, !dbg !38
if.end: ; preds = %for.body
%1 = icmp sgt i32 %y, 0
br i1 %1, label %if.then.4, label %if.end.6, !dbg !39
if.then.4: ; preds = %if.end
%mul5 = mul nsw i32 %a, %y, !dbg !40
tail call void @llvm.dbg.value(metadata i32 %mul5, i64 0, metadata !12, metadata !17), !dbg !23
br label %for.end, !dbg !43
if.end.6: ; preds = %if.end
%2 = icmp sgt i32 %z, 0
%inc = add nuw nsw i32 %i.025, 1, !dbg !44
tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !13, metadata !17), !dbg !25
br i1 %2, label %if.then.8, label %for.cond, !dbg !45
if.then.8: ; preds = %if.end.6
%mul9 = mul nsw i32 %a, %z, !dbg !46
tail call void @llvm.dbg.value(metadata i32 %mul9, i64 0, metadata !12, metadata !17), !dbg !23
br label %for.end, !dbg !49
for.end: ; preds = %for.cond, %if.then.8, %if.then.4, %if.then, %entry
%a.addr.0 = phi i32 [ %mul2, %if.then ], [ %mul5, %if.then.4 ], [ %mul9, %if.then.8 ], [ %a, %entry ], [ %a, %for.cond ]
ret i32 %a.addr.0, !dbg !50
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
attributes #0 = { norecurse nounwind readnone uwtable }
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!14, !15}
!llvm.ident = !{!16}
[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 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
Recommit LiveDebugValues pass after fixing a couple of minor issues. llvm-svn: 255759
2015-12-16 19:09:48 +08:00
!1 = !DIFile(filename: "LiveDebugValues-3preds.c", directory: "/home/vt/julia/test/tvvikram")
!2 = !{}
[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
!4 = distinct !DISubprogram(name: "add", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !8)
Recommit LiveDebugValues pass after fixing a couple of minor issues. llvm-svn: 255759
2015-12-16 19:09:48 +08:00
!5 = !DISubroutineType(types: !6)
!6 = !{!7, !7, !7, !7, !7}
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = !{!9, !10, !11, !12, !13}
!9 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !1, line: 1, type: !7)
!10 = !DILocalVariable(name: "y", arg: 2, scope: !4, file: !1, line: 1, type: !7)
!11 = !DILocalVariable(name: "z", arg: 3, scope: !4, file: !1, line: 1, type: !7)
!12 = !DILocalVariable(name: "a", arg: 4, scope: !4, file: !1, line: 1, type: !7)
!13 = !DILocalVariable(name: "i", scope: !4, file: !1, line: 2, type: !7)
!14 = !{i32 2, !"Dwarf Version", i32 4}
!15 = !{i32 2, !"Debug Info Version", i32 3}
!16 = !{!"clang version 3.8.0 (trunk 253049) "}
!17 = !DIExpression()
!18 = !DILocation(line: 1, column: 13, scope: !4)
!19 = !DILocation(line: 1, column: 20, scope: !20)
!20 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
!21 = !DILocation(line: 1, column: 27, scope: !22)
!22 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 2)
!23 = !DILocation(line: 1, column: 34, scope: !24)
!24 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3)
!25 = !DILocation(line: 2, column: 7, scope: !20)
!26 = !DILocation(line: 3, column: 21, scope: !27)
!27 = !DILexicalBlockFile(scope: !28, file: !1, discriminator: 1)
!28 = distinct !DILexicalBlock(scope: !29, file: !1, line: 3, column: 3)
!29 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3, column: 3)
!30 = !DILocation(line: 3, column: 17, scope: !27)
!31 = !DILocation(line: 3, column: 3, scope: !27)
!32 = !DILocation(line: 4, column: 11, scope: !33)
!33 = distinct !DILexicalBlock(scope: !34, file: !1, line: 4, column: 9)
!34 = distinct !DILexicalBlock(scope: !28, file: !1, line: 3, column: 31)
!35 = !DILocation(line: 4, column: 9, scope: !34)
!36 = !DILocation(line: 5, column: 13, scope: !37)
!37 = distinct !DILexicalBlock(scope: !33, file: !1, line: 4, column: 16)
!38 = !DILocation(line: 6, column: 7, scope: !37)
!39 = !DILocation(line: 8, column: 9, scope: !34)
!40 = !DILocation(line: 9, column: 13, scope: !41)
!41 = distinct !DILexicalBlock(scope: !42, file: !1, line: 8, column: 16)
!42 = distinct !DILexicalBlock(scope: !34, file: !1, line: 8, column: 9)
!43 = !DILocation(line: 10, column: 7, scope: !41)
!44 = !DILocation(line: 3, column: 27, scope: !28)
!45 = !DILocation(line: 12, column: 9, scope: !34)
!46 = !DILocation(line: 13, column: 13, scope: !47)
!47 = distinct !DILexicalBlock(scope: !48, file: !1, line: 12, column: 16)
!48 = distinct !DILexicalBlock(scope: !34, file: !1, line: 12, column: 9)
!49 = !DILocation(line: 14, column: 7, scope: !47)
!50 = !DILocation(line: 17, column: 3, scope: !4)
...
---
name: add
alignment: 4
exposesReturnsTwice: false
hasInlineAsm: false
Introduce MachineFunctionProperties and the AllVRegsAllocated property MachineFunctionProperties represents a set of properties that a MachineFunction can have at particular points in time. Existing examples of this idea are MachineRegisterInfo::isSSA() and MachineRegisterInfo::tracksLiveness() which will eventually be switched to use this mechanism. This change introduces the AllVRegsAllocated property; i.e. the property that all virtual registers have been allocated and there are no VReg operands left. With this mechanism, passes can declare that they require a particular property to be set, or that they set or clear properties by implementing e.g. MachineFunctionPass::getRequiredProperties(). The MachineFunctionPass base class verifies that the requirements are met, and handles the setting and clearing based on the delcarations. Passes can also directly query and update the current properties of the MF if they want to have conditional behavior. This change annotates the target-independent post-regalloc passes; future changes will also annotate target-specific ones. Reviewers: qcolombet, hfinkel Differential Revision: http://reviews.llvm.org/D18421 llvm-svn: 264593
2016-03-29 01:05:30 +08:00
allVRegsAllocated: true
Recommit LiveDebugValues pass after fixing a couple of minor issues. llvm-svn: 255759
2015-12-16 19:09:48 +08:00
isSSA: false
tracksRegLiveness: true
tracksSubRegLiveness: false
liveins:
- { reg: '%edi' }
- { reg: '%esi' }
- { reg: '%edx' }
- { reg: '%ecx' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 0
adjustsStack: false
hasCalls: false
maxCallFrameSize: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
body: |
bb.0.entry:
successors: %bb.1.for.body.preheader(20), %bb.9.for.end(12)
liveins: %ecx, %edi, %edx, %esi
DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
%r8d = MOV32rr %esi, debug-location !26
%r8d = IMUL32rr killed %r8d, %edi, implicit-def dead %eflags, debug-location !26
TEST32rr %r8d, %r8d, implicit-def %eflags, debug-location !31
JLE_1 %bb.9.for.end, implicit %eflags
bb.1.for.body.preheader:
successors: %bb.3.for.body(0)
liveins: %ecx, %edi, %edx, %esi, %r8d
DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
%eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags
bb.3.for.body (align 4):
successors: %bb.4.if.then(4), %bb.5.if.end(124)
liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
TEST32rr %edi, %edi, implicit-def %eflags, debug-location !35
JG_1 %bb.4.if.then, implicit %eflags
bb.5.if.end:
successors: %bb.6.if.then.4(4), %bb.7.if.end.6(124)
liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
TEST32rr %esi, %esi, implicit-def %eflags, debug-location !39
JG_1 %bb.6.if.then.4, implicit %eflags
bb.7.if.end.6:
successors: %bb.8.if.then.8(4), %bb.2.for.cond(124)
liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
TEST32rr %edx, %edx, implicit-def %eflags, debug-location !45
JG_1 %bb.8.if.then.8, implicit %eflags
bb.2.for.cond:
successors: %bb.3.for.body(124), %bb.9.for.end(4)
liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
%eax = INC32r killed %eax, implicit-def dead %eflags, debug-location !44
DBG_VALUE debug-use %eax, debug-use _, !13, !17, debug-location !25
CMP32rr %eax, %r8d, implicit-def %eflags, debug-location !31
JL_1 %bb.3.for.body, implicit %eflags
JMP_1 %bb.9.for.end
bb.4.if.then:
liveins: %ecx, %edi
DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
%ecx = IMUL32rr killed %ecx, killed %edi, implicit-def dead %eflags, debug-location !36
DBG_VALUE 0, 0, !13, !17, debug-location !25
%eax = MOV32rr killed %ecx, debug-location !50
RETQ %eax, debug-location !50
bb.6.if.then.4:
liveins: %ecx, %esi
DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
%ecx = IMUL32rr killed %ecx, killed %esi, implicit-def dead %eflags, debug-location !40
DBG_VALUE 0, 0, !13, !17, debug-location !25
%eax = MOV32rr killed %ecx, debug-location !50
RETQ %eax, debug-location !50
bb.8.if.then.8:
successors: %bb.9.for.end(0)
liveins: %ecx, %edx
DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
%ecx = IMUL32rr killed %ecx, killed %edx, implicit-def dead %eflags, debug-location !46
bb.9.for.end:
liveins: %ecx
DBG_VALUE 0, 0, !13, !17, debug-location !25
%eax = MOV32rr killed %ecx, debug-location !50
RETQ %eax, debug-location !50
...