0caeaff123
This was landed but reverted in 5b9c2b1bea7 due to asan picking up a memory leak. This is fixed in the change to InstrRefBasedImpl.cpp. Original commit message follows: [LiveDebugValues][NFC] Add instr-ref tests, adapt old tests This patch adds a few tests in DebugInfo/MIR/InstrRef/ of interesting behaviour that the instruction referencing implementation of LiveDebugValues has. Mostly, these tests exist to ensure that if you give the "-experimental-debug-variable-locations" command line switch, the right implementation runs; and to ensure it behaves the same way as the VarLoc LiveDebugValues implementation. I've also touched roughly 30 other tests, purely to make the tests less rigid about what output to accept. DBG_VALUE instructions are usually printed with a trailing !debug-location indicating its scope: !debug-location !1234 However InstrRefBasedLDV produces new DebugLoc instances on the fly, meaning there sometimes isn't a numbered node when they're printed, making the output: !debug-location !DILocation(line: 0, blah blah) Which causes a ton of these tests to fail. This patch removes checks for that final part of each DBG_VALUE instruction. None of them appear to be actually checking the scope is correct, just that it's present, so I don't believe there's any loss in coverage here. Differential Revision: https://reviews.llvm.org/D83054
258 lines
11 KiB
YAML
258 lines
11 KiB
YAML
# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s
|
|
|
|
# Test the extension of debug ranges from predecessors.
|
|
# Generated from the source file LiveDebugValues.c:
|
|
# #include <stdio.h>
|
|
# int m;
|
|
# extern int inc(int n);
|
|
# extern int change(int n);
|
|
# extern int modify(int n);
|
|
# int main(int argc, char **argv) {
|
|
# int n;
|
|
# if (argc != 2)
|
|
# n = 2;
|
|
# else
|
|
# n = atoi(argv[1]);
|
|
# n = change(n);
|
|
# if (n > 10) {
|
|
# m = modify(n);
|
|
# m = m + n; // var `m' doesn't has a dbg.value
|
|
# }
|
|
# else
|
|
# m = inc(n); // var `m' doesn't has a dbg.value
|
|
# printf("m(main): %d\n", m);
|
|
# return 0;
|
|
# }
|
|
# with clang -g -O3 -c -emit-llvm LiveDebugValues.c -S -o live-debug-values.ll
|
|
# then llc -stop-after stackmap-liveness live-debug-values.ll -o /dev/null > live-debug-values.mir
|
|
# This case will also produce multiple locations but only the debug range
|
|
# extension is tested here. This test case is tested with DWARF information under
|
|
# llvm/test/DebugInfo/live-debug-values.ll and present here for testing under
|
|
# MIR->MIR serialization.
|
|
|
|
# DBG_VALUE for variable "n" is extended into %bb.5 from its predecessors %bb.3
|
|
# and %bb.4.
|
|
# CHECK: ![[N_VAR:[0-9]+]] = !DILocalVariable(name: "n",{{.*}})
|
|
#
|
|
# CHECK: bb.5.if.end.7:
|
|
# CHECK: DBG_VALUE $ebx, $noreg, ![[N_VAR]], !DIExpression()
|
|
|
|
|
|
--- |
|
|
; ModuleID = 'live-debug-values.ll'
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@m = common global i32 0, align 4, !dbg !16
|
|
@.str = private unnamed_addr constant [13 x i8] c"m(main): %d\0A\00", align 1
|
|
|
|
; Function Attrs: nounwind uwtable
|
|
define i32 @main(i32 %argc, i8** nocapture readonly %argv) #0 !dbg !4 {
|
|
entry:
|
|
tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !12, metadata !20), !dbg !21
|
|
tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !13, metadata !20), !dbg !22
|
|
%cmp = icmp eq i32 %argc, 2, !dbg !24
|
|
br i1 %cmp, label %if.else, label %if.end, !dbg !26
|
|
|
|
if.else: ; preds = %entry
|
|
%arrayidx = getelementptr inbounds i8*, i8** %argv, i64 1, !dbg !27
|
|
%0 = load i8*, i8** %arrayidx, align 8, !dbg !27, !tbaa !28
|
|
%call = tail call i32 (i8*, ...) bitcast (i32 (...)* @atoi to i32 (i8*, ...)*)(i8* %0) #4, !dbg !32
|
|
tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !14, metadata !20), !dbg !33
|
|
br label %if.end
|
|
|
|
if.end: ; preds = %if.else, %entry
|
|
%n.0 = phi i32 [ %call, %if.else ], [ 2, %entry ]
|
|
%call1 = tail call i32 @change(i32 %n.0) #4, !dbg !34
|
|
tail call void @llvm.dbg.value(metadata i32 %call1, i64 0, metadata !14, metadata !20), !dbg !33
|
|
%cmp2 = icmp sgt i32 %call1, 10, !dbg !35
|
|
br i1 %cmp2, label %if.then.3, label %if.else.5, !dbg !37
|
|
|
|
if.then.3: ; preds = %if.end
|
|
%call4 = tail call i32 @modify(i32 %call1) #4, !dbg !38
|
|
%add = add nsw i32 %call4, %call1, !dbg !40
|
|
br label %if.end.7, !dbg !41
|
|
|
|
if.else.5: ; preds = %if.end
|
|
%call6 = tail call i32 @inc(i32 %call1) #4, !dbg !42
|
|
br label %if.end.7
|
|
|
|
if.end.7: ; preds = %if.else.5, %if.then.3
|
|
%storemerge = phi i32 [ %call6, %if.else.5 ], [ %add, %if.then.3 ]
|
|
store i32 %storemerge, i32* @m, align 4, !dbg !43, !tbaa !44
|
|
%call8 = tail call i32 (i8*, ...) @printf(i8* nonnull getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %storemerge) #4, !dbg !46
|
|
ret i32 0, !dbg !47
|
|
}
|
|
|
|
declare i32 @atoi(...) #1
|
|
|
|
declare i32 @change(i32) #1
|
|
|
|
declare i32 @modify(i32) #1
|
|
|
|
declare i32 @inc(i32) #1
|
|
|
|
; Function Attrs: nounwind
|
|
declare i32 @printf(i8* nocapture readonly, ...) #2
|
|
|
|
; Function Attrs: nounwind readnone
|
|
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #3
|
|
|
|
attributes #0 = { nounwind uwtable }
|
|
attributes #1 = { nounwind }
|
|
attributes #2 = { nounwind }
|
|
attributes #3 = { nounwind readnone }
|
|
attributes #4 = { nounwind }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!17, !18}
|
|
!llvm.ident = !{!19}
|
|
|
|
!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, globals: !15)
|
|
!1 = !DIFile(filename: "LiveDebugValues.c", directory: "/home/vt/julia/test/tvvikram")
|
|
!2 = !{}
|
|
!4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
|
|
!5 = !DISubroutineType(types: !6)
|
|
!6 = !{!7, !7, !8}
|
|
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
|
|
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
|
|
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
|
|
!10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
|
|
!11 = !{!12, !13, !14}
|
|
!12 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 6, type: !7)
|
|
!13 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 6, type: !8)
|
|
!14 = !DILocalVariable(name: "n", scope: !4, file: !1, line: 7, type: !7)
|
|
!15 = !{!16}
|
|
!16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true), expr: !DIExpression())
|
|
!17 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!18 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!19 = !{!"clang version 3.8.0 (trunk 253049)"}
|
|
!20 = !DIExpression()
|
|
!21 = !DILocation(line: 6, column: 14, scope: !4)
|
|
!22 = !DILocation(line: 6, column: 27, scope: !23)
|
|
!23 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
|
|
!24 = !DILocation(line: 8, column: 12, scope: !25)
|
|
!25 = distinct !DILexicalBlock(scope: !4, file: !1, line: 8, column: 7)
|
|
!26 = !DILocation(line: 8, column: 7, scope: !4)
|
|
!27 = !DILocation(line: 11, column: 14, scope: !25)
|
|
!28 = !{!29, !29, i64 0}
|
|
!29 = !{!"any pointer", !30, i64 0}
|
|
!30 = !{!"omnipotent char", !31, i64 0}
|
|
!31 = !{!"Simple C/C++ TBAA"}
|
|
!32 = !DILocation(line: 11, column: 9, scope: !25)
|
|
!33 = !DILocation(line: 7, column: 7, scope: !23)
|
|
!34 = !DILocation(line: 12, column: 7, scope: !4)
|
|
!35 = !DILocation(line: 13, column: 9, scope: !36)
|
|
!36 = distinct !DILexicalBlock(scope: !4, file: !1, line: 13, column: 7)
|
|
!37 = !DILocation(line: 13, column: 7, scope: !4)
|
|
!38 = !DILocation(line: 14, column: 9, scope: !39)
|
|
!39 = distinct !DILexicalBlock(scope: !36, file: !1, line: 13, column: 15)
|
|
!40 = !DILocation(line: 15, column: 11, scope: !39)
|
|
!41 = !DILocation(line: 16, column: 3, scope: !39)
|
|
!42 = !DILocation(line: 18, column: 9, scope: !36)
|
|
!43 = !DILocation(line: 15, column: 7, scope: !39)
|
|
!44 = !{!45, !45, i64 0}
|
|
!45 = !{!"int", !30, i64 0}
|
|
!46 = !DILocation(line: 19, column: 3, scope: !4)
|
|
!47 = !DILocation(line: 20, column: 3, scope: !4)
|
|
|
|
...
|
|
---
|
|
name: main
|
|
alignment: 16
|
|
exposesReturnsTwice: false
|
|
tracksRegLiveness: true
|
|
liveins:
|
|
- { reg: '$edi' }
|
|
- { reg: '$rsi' }
|
|
calleeSavedRegisters: [ '$bh', '$bl', '$bp', '$bpl', '$bx', '$ebp', '$ebx',
|
|
'$rbp', '$rbx', '$r12', '$r13', '$r14', '$r15',
|
|
'$r12b', '$r13b', '$r14b', '$r15b', '$r12d', '$r13d',
|
|
'$r14d', '$r15d', '$r12w', '$r13w', '$r14w', '$r15w' ]
|
|
frameInfo:
|
|
isFrameAddressTaken: false
|
|
isReturnAddressTaken: false
|
|
hasStackMap: false
|
|
hasPatchPoint: false
|
|
stackSize: 8
|
|
offsetAdjustment: 0
|
|
maxAlignment: 0
|
|
adjustsStack: true
|
|
hasCalls: true
|
|
maxCallFrameSize: 0
|
|
hasOpaqueSPAdjustment: false
|
|
hasVAStart: false
|
|
hasMustTailInVarArgFunc: false
|
|
fixedStack:
|
|
- { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$rbx' }
|
|
body: |
|
|
bb.0.entry:
|
|
successors: %bb.1.if.else(16), %bb.2.if.end(16)
|
|
liveins: $edi, $rsi, $rbx
|
|
|
|
frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
|
|
CFI_INSTRUCTION def_cfa_offset 16
|
|
CFI_INSTRUCTION offset $rbx, -16
|
|
DBG_VALUE $edi, _, !12, !20, debug-location !21
|
|
DBG_VALUE $rsi, _, !13, !20, debug-location !22
|
|
$eax = MOV32rr $edi
|
|
DBG_VALUE $eax, _, !12, !20, debug-location !21
|
|
$edi = MOV32ri 2
|
|
CMP32ri8 killed $eax, 2, implicit-def $eflags, debug-location !26
|
|
JCC_1 %bb.2.if.end, 5, implicit $eflags
|
|
|
|
bb.1.if.else:
|
|
successors: %bb.2.if.end(0)
|
|
liveins: $rsi
|
|
|
|
DBG_VALUE $rsi, _, !13, !20, debug-location !22
|
|
$rdi = MOV64rm killed $rsi, 1, _, 8, _, debug-location !27 :: (load 8 from %ir.arrayidx, !tbaa !28)
|
|
dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !32
|
|
CALL64pcrel32 @atoi, csr_64, implicit $rsp, implicit $rdi, implicit $al, implicit-def $rsp, implicit-def $eax, debug-location !32
|
|
$edi = MOV32rr $eax, debug-location !32
|
|
DBG_VALUE $edi, _, !14, !20, debug-location !33
|
|
|
|
bb.2.if.end:
|
|
successors: %bb.3.if.then.3(16), %bb.4.if.else.5(16)
|
|
liveins: $edi
|
|
|
|
CALL64pcrel32 @change, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax, debug-location !34
|
|
$ebx = MOV32rr $eax, debug-location !34
|
|
DBG_VALUE $ebx, _, !14, !20, debug-location !33
|
|
CMP32ri8 $ebx, 11, implicit-def $eflags, debug-location !37
|
|
JCC_1 %bb.4.if.else.5, 12, implicit killed $eflags, debug-location !37
|
|
|
|
bb.3.if.then.3:
|
|
successors: %bb.5.if.end.7(0)
|
|
liveins: $ebx
|
|
|
|
DBG_VALUE $ebx, _, !14, !20, debug-location !33
|
|
$edi = MOV32rr $ebx, debug-location !38
|
|
CALL64pcrel32 @modify, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax, debug-location !38
|
|
$ecx = MOV32rr $eax, debug-location !38
|
|
$ecx = ADD32rr killed $ecx, killed $ebx, implicit-def dead $eflags, debug-location !40
|
|
JMP_1 %bb.5.if.end.7
|
|
|
|
bb.4.if.else.5:
|
|
successors: %bb.5.if.end.7(0)
|
|
liveins: $ebx
|
|
|
|
DBG_VALUE $ebx, _, !14, !20, debug-location !33
|
|
$edi = MOV32rr killed $ebx, debug-location !42
|
|
CALL64pcrel32 @inc, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax, debug-location !42
|
|
$ecx = MOV32rr $eax, debug-location !42
|
|
|
|
bb.5.if.end.7:
|
|
liveins: $ecx
|
|
|
|
MOV32mr $rip, 1, _, @m, _, $ecx, debug-location !43 :: (store 4 into @m, !tbaa !44)
|
|
dead undef $edi = MOV32ri @.str, implicit-def $rdi, debug-location !46
|
|
dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !47
|
|
$esi = MOV32rr killed $ecx, debug-location !46
|
|
CALL64pcrel32 @printf, csr_64, implicit $rsp, implicit $rdi, implicit $esi, implicit $al, implicit-def $rsp, implicit-def dead $eax, debug-location !46
|
|
$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !47
|
|
$rbx = POP64r implicit-def $rsp, implicit $rsp, debug-location !47
|
|
RETQ $eax, debug-location !47
|
|
|
|
...
|