caio/clang-p2996
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
a0c9ec1f5e70e8f15da170667b2a8e63d024f3ab
clang-p2996/llvm/test/DebugInfo/MIR/X86/live-debug-values-3preds.mir
Jeremy Morse 0caeaff123 [LiveDebugValues][NFC] Re-land 60db26a66d, add instr-ref tests 
This was landed but reverted in 5b9c2b1bea 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
2020-09-11 12:14:44 +01:00

300 lines
13 KiB
YAML
Raw Blame History

# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s
# 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
# CHECK: ![[X_VAR:[0-9]+]] = !DILocalVariable(name: "x", {{.*}})
# CHECK: ![[Y_VAR:[0-9]+]] = !DILocalVariable(name: "y", {{.*}})
# CHECK: ![[Z_VAR:[0-9]+]] = !DILocalVariable(name: "z", {{.*}})
# 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:
# CHECK-DAG: DBG_VALUE $edi, $noreg, ![[X_VAR]], !DIExpression()
# CHECK-DAG: DBG_VALUE $esi, $noreg, ![[Y_VAR]], !DIExpression()
# CHECK-DAG: DBG_VALUE $edx, $noreg, ![[Z_VAR]], !DIExpression()
# CHECK: RET
--- |
; 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}
!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)
!1 = !DIFile(filename: "LiveDebugValues-3preds.c", directory: "/home/vt/julia/test/tvvikram")
!2 = !{}
!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, retainedNodes: !8)
!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: 16
exposesReturnsTwice: false
tracksRegLiveness: true
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 $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !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
JCC_1 %bb.9.for.end, 14, implicit $eflags
bb.1.for.body.preheader:
successors: %bb.3.for.body(0)
liveins: $ecx, $edi, $edx, $esi, $r8d
DBG_VALUE $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !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 $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
TEST32rr $edi, $edi, implicit-def $eflags, debug-location !35
JCC_1 %bb.4.if.then, 15, 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 $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
TEST32rr $esi, $esi, implicit-def $eflags, debug-location !39
JCC_1 %bb.6.if.then.4, 15, 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 $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !12, !17, debug-location !23
DBG_VALUE 0, 0, !13, !17, debug-location !25
TEST32rr $edx, $edx, implicit-def $eflags, debug-location !45
JCC_1 %bb.8.if.then.8, 15, 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 $edi, _, !9, !17, debug-location !18
DBG_VALUE $esi, _, !10, !17, debug-location !19
DBG_VALUE $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !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 $eax, _, !13, !17, debug-location !25
CMP32rr $eax, $r8d, implicit-def $eflags, debug-location !31
JCC_1 %bb.3.for.body, 12, implicit $eflags
JMP_1 %bb.9.for.end
bb.4.if.then:
liveins: $ecx, $edi
DBG_VALUE $edi, _, !9, !17, debug-location !18
DBG_VALUE $ecx, _, !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 $esi, _, !10, !17, debug-location !19
DBG_VALUE $ecx, _, !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 $edx, _, !11, !17, debug-location !21
DBG_VALUE $ecx, _, !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
...
Reference in New Issue View Git Blame Copy Permalink