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llvm-mirror/test/DebugInfo/X86/sdag-dbgvalue-phi-use-2.ll
Matt Arsenault 23c462a8b5 Rename ExpandISelPseudo->FinalizeISel, delay register reservation 
This allows targets to make more decisions about reserved registers
after isel. For example, now it should be certain there are calls or
stack objects in the frame or not, which could have been introduced by
legalization.

Patch by Matthias Braun

llvm-svn: 363757
2019-06-19 00:25:39 +00:00

174 lines
9.0 KiB
LLVM
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; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s | FileCheck %s
; This test case is a modified version of dbg_value_phi_isel1.ll
; where the llvm.dbg.value nodes in for.body has been moved.
; ModuleID = 'debug.c'
source_filename = "debug.c"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@end = dso_local local_unnamed_addr global i32 10, align 4, !dbg !0
; Function Attrs: nounwind uwtable
define dso_local i32 @main() local_unnamed_addr #0 !dbg !11 {
entry:
%arr = alloca [80 x i32], align 16
call void @llvm.dbg.value(metadata i32 9, metadata !15, metadata !DIExpression()), !dbg !26
call void @llvm.dbg.value(metadata i32 13, metadata !16, metadata !DIExpression()), !dbg !27
call void @llvm.dbg.value(metadata i32 0, metadata !17, metadata !DIExpression()), !dbg !28
%0 = load i32, i32* @end, align 4, !dbg !29, !tbaa !31
%cmp20 = icmp sgt i32 %0, 0, !dbg !35
br i1 %cmp20, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !36
for.body.lr.ph: ; preds = %entry
%1 = load i32, i32* @end, align 4, !tbaa !31
br label %for.body, !dbg !36
for.cond.cleanup: ; preds = %for.body, %entry
; CHECK-LABEL: bb.{{.*}}.for.cond.cleanup:
; CHECK: [[REG1:%[0-9]+]]:gr32 = PHI
; CHECK-NEXT: DBG_VALUE [[REG1]]
%x.0.lcssa = phi i32 [ 9, %entry ], [ %add, %for.body ]
call void @llvm.dbg.value(metadata i32 %x.0.lcssa, metadata !15, metadata !DIExpression()), !dbg !26
%2 = bitcast [80 x i32]* %arr to i8*, !dbg !37
call void @llvm.lifetime.start.p0i8(i64 320, i8* nonnull %2) #3, !dbg !37
call void @llvm.dbg.declare(metadata [80 x i32]* %arr, metadata !19, metadata !DIExpression()), !dbg !38
call void @llvm.dbg.value(metadata i32 0, metadata !24, metadata !DIExpression()), !dbg !39
br label %for.body4, !dbg !40
for.body: ; preds = %for.body.lr.ph, %for.body
; CHECK-LABEL: bb.{{.*}}.for.body:
; CHECK: [[REG2:%[0-9]+]]:gr32 = PHI
; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI
; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI
; CHECK-NEXT: DBG_VALUE [[REG3]], $noreg, !16
; CHECK-NEXT: DBG_VALUE 555, $noreg, !17
; CHECK-NEXT: [[ADDREG:%[0-9]+]]:gr32 = nuw nsw ADD32rr
; CHECK-NEXT: DBG_VALUE [[REG2]], $noreg, !17
; CHECK: [[MULREG:%[0-9]+]]:gr32 = LEA64_32r
; CHECK-NEXT: DBG_VALUE 777, $noreg, !17
; XXX: The following DBG_VALUE should have stayed below the INC32r
; CHECK-NEXT: DBG_VALUE [[MULREG]], $noreg, !16
; CHECK-NEXT: [[INCREG:%[0-9]+]]:gr32 = nuw nsw INC32r
; CHECK-NEXT: DBG_VALUE [[INCREG]], $noreg, !17
; CHECK-NEXT: DBG_VALUE [[ADDREG]], $noreg, !15
; CHECK-NEXT: implicit-def $eflags,
; CHECK-NEXT: DBG_VALUE [[REG4]]
%u.023 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
%y.022 = phi i32 [ 13, %for.body.lr.ph ], [ %mul, %for.body ]
%x.021 = phi i32 [ 9, %for.body.lr.ph ], [ %add, %for.body ]
call void @llvm.dbg.value(metadata i32 %y.022, metadata !16, metadata !DIExpression()), !dbg !27
; This dbg.value has been manually added compared to dbg_value_phi_isel1.ll
call void @llvm.dbg.value(metadata i32 555, metadata !17, metadata !DIExpression()), !dbg !28
%add = add nuw nsw i32 %y.022, %x.021, !dbg !41
; This dbg.value has been manually moved compared to dbg_value_phi_isel1.ll
call void @llvm.dbg.value(metadata i32 %u.023, metadata !17, metadata !DIExpression()), !dbg !28
%mul = mul nsw i32 %y.022, 3, !dbg !43
; This dbg.value has been manually added compared to dbg_value_phi_isel1.ll
call void @llvm.dbg.value(metadata i32 777, metadata !17, metadata !DIExpression()), !dbg !28
%inc = add nuw nsw i32 %u.023, 1, !dbg !44
call void @llvm.dbg.value(metadata i32 %inc, metadata !17, metadata !DIExpression()), !dbg !28
call void @llvm.dbg.value(metadata i32 %mul, metadata !16, metadata !DIExpression()), !dbg !27
call void @llvm.dbg.value(metadata i32 %add, metadata !15, metadata !DIExpression()), !dbg !26
%cmp = icmp slt i32 %inc, %1, !dbg !35
; This dbg.value has been manually moved compared to dbg_value_phi_isel1.ll
call void @llvm.dbg.value(metadata i32 %x.021, metadata !15, metadata !DIExpression()), !dbg !26
br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !36, !llvm.loop !45
for.cond.cleanup3: ; preds = %for.body4
call void @llvm.lifetime.end.p0i8(i64 320, i8* nonnull %2) #3, !dbg !47
ret i32 %x.0.lcssa, !dbg !48
for.body4: ; preds = %for.body4, %for.cond.cleanup
%indvars.iv = phi i64 [ 0, %for.cond.cleanup ], [ %indvars.iv.next, %for.body4 ]
call void @llvm.dbg.value(metadata i64 %indvars.iv, metadata !24, metadata !DIExpression()), !dbg !39
%arrayidx = getelementptr inbounds [80 x i32], [80 x i32]* %arr, i64 0, i64 %indvars.iv, !dbg !49
%3 = trunc i64 %indvars.iv to i32, !dbg !52
%4 = add i32 %3, 3, !dbg !52
store volatile i32 %4, i32* %arrayidx, align 4, !dbg !52, !tbaa !31
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !53
call void @llvm.dbg.value(metadata i32 undef, metadata !24, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !39
%exitcond = icmp eq i64 %indvars.iv.next, 64, !dbg !54
br i1 %exitcond, label %for.cond.cleanup3, label %for.body4, !dbg !40, !llvm.loop !55
}
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #2
attributes #0 = { nounwind uwtable }
attributes #1 = { argmemonly nounwind }
attributes #2 = { nounwind readnone speculatable }
attributes #3 = { nounwind }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!7, !8, !9}
!llvm.ident = !{!10}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "end", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "debug.c", directory: "")
!4 = !{}
!5 = !{!0}
!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!7 = !{i32 2, !"Dwarf Version", i32 4}
!8 = !{i32 2, !"Debug Info Version", i32 3}
!9 = !{i32 1, !"wchar_size", i32 4}
!10 = !{!"clang version 7.0.0 (x)"}
!11 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, retainedNodes: !14)
!12 = !DISubroutineType(types: !13)
!13 = !{!6}
!14 = !{!15, !16, !17, !19, !24}
!15 = !DILocalVariable(name: "x", scope: !11, file: !3, line: 4, type: !6)
!16 = !DILocalVariable(name: "y", scope: !11, file: !3, line: 5, type: !6)
!17 = !DILocalVariable(name: "u", scope: !18, file: !3, line: 6, type: !6)
!18 = distinct !DILexicalBlock(scope: !11, file: !3, line: 6, column: 3)
!19 = !DILocalVariable(name: "arr", scope: !11, file: !3, line: 11, type: !20)
!20 = !DICompositeType(tag: DW_TAG_array_type, baseType: !21, size: 2560, elements: !22)
!21 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6)
!22 = !{!23}
!23 = !DISubrange(count: 80)
!24 = !DILocalVariable(name: "q", scope: !25, file: !3, line: 12, type: !6)
!25 = distinct !DILexicalBlock(scope: !11, file: !3, line: 12, column: 3)
!26 = !DILocation(line: 4, column: 7, scope: !11)
!27 = !DILocation(line: 5, column: 7, scope: !11)
!28 = !DILocation(line: 6, column: 12, scope: !18)
!29 = !DILocation(line: 6, column: 23, scope: !30)
!30 = distinct !DILexicalBlock(scope: !18, file: !3, line: 6, column: 3)
!31 = !{!32, !32, i64 0}
!32 = !{!"int", !33, i64 0}
!33 = !{!"omnipotent char", !34, i64 0}
!34 = !{!"Simple C/C++ TBAA"}
!35 = !DILocation(line: 6, column: 21, scope: !30)
!36 = !DILocation(line: 6, column: 3, scope: !18)
!37 = !DILocation(line: 11, column: 3, scope: !11)
!38 = !DILocation(line: 11, column: 16, scope: !11)
!39 = !DILocation(line: 12, column: 12, scope: !25)
!40 = !DILocation(line: 12, column: 3, scope: !25)
!41 = !DILocation(line: 7, column: 7, scope: !42)
!42 = distinct !DILexicalBlock(scope: !30, file: !3, line: 6, column: 33)
!43 = !DILocation(line: 8, column: 11, scope: !42)
!44 = !DILocation(line: 6, column: 28, scope: !30)
!45 = distinct !{!45, !36, !46}
!46 = !DILocation(line: 9, column: 3, scope: !18)
!47 = !DILocation(line: 17, column: 1, scope: !11)
!48 = !DILocation(line: 16, column: 3, scope: !11)
!49 = !DILocation(line: 13, column: 5, scope: !50)
!50 = distinct !DILexicalBlock(scope: !51, file: !3, line: 12, column: 32)
!51 = distinct !DILexicalBlock(scope: !25, file: !3, line: 12, column: 3)
!52 = !DILocation(line: 13, column: 12, scope: !50)
!53 = !DILocation(line: 12, column: 27, scope: !51)
!54 = !DILocation(line: 12, column: 21, scope: !51)
!55 = distinct !{!55, !40, !56}
!56 = !DILocation(line: 14, column: 3, scope: !25)
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