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llvm-mirror/test/DebugInfo/X86/sdag-dangling-dbgvalue.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

195 lines
9.2 KiB
LLVM
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; RUN: llc %s -stop-before finalize-isel -o - | FileCheck %s
;--------------------------------------------------------------------
; This test case is basically generated from the following C code.
; Compiled with "--target=x86_64-apple-darwin -S -g -O3" to get debug
; info for optimized code.
;
; struct SS {
; int a;
; int b;
; } S = { .a = 23, .b = -17 };
;
; int test1() {
; struct SS* foo1 = &S;
; return (int)foo1;
; }
;
; int test2() {
; struct SS* foo2 = &S;
; struct SS* bar2 = &S;
; return (int)foo2 + (int)bar2;
; }
;
; int test3() {
; struct SS* bar3 = &S;
; struct SS* foo3 = &S;
; return (int)foo3 + (int)bar3;
; }
;
; int test4() {
; struct SS* foo4 = &S;
; struct SS* bar4 = &S;
; foo = 0;
; return (int)foo4 + (int)bar4;
; }
;
; int test5() {
; struct SS* bar5 = &S;
; struct SS* foo5 = &S;
; foo5 = 0;
; return (int)foo5 + (int)bar5;
; }
;--------------------------------------------------------------------
; CHECK: ![[FOO1:.*]] = !DILocalVariable(name: "foo1"
; CHECK: ![[BAR1:.*]] = !DILocalVariable(name: "bar1"
; CHECK: ![[FOO2:.*]] = !DILocalVariable(name: "foo2"
; CHECK: ![[BAR2:.*]] = !DILocalVariable(name: "bar2"
; CHECK: ![[FOO3:.*]] = !DILocalVariable(name: "bar3"
; CHECK: ![[BAR3:.*]] = !DILocalVariable(name: "foo3"
; CHECK: ![[FOO4:.*]] = !DILocalVariable(name: "foo4"
; CHECK: ![[BAR4:.*]] = !DILocalVariable(name: "bar4"
; CHECK: ![[BAR5:.*]] = !DILocalVariable(name: "bar5"
; CHECK: ![[FOO5:.*]] = !DILocalVariable(name: "foo5"
source_filename = "sdag-dangling-dbgvalue.c"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.4.0"
%struct.SS = type { i32, i32 }
@S = global %struct.SS { i32 23, i32 -17 }, align 4, !dbg !0
; Verify that the def comes before the for foo1.
define i32 @test1() local_unnamed_addr #0 !dbg !17 {
; CHECK-LABEL: bb.0.entry1
; CHECK-NEXT: DBG_VALUE 0, $noreg, ![[BAR1]], !DIExpression()
; CHECK-NEXT: [[REG1:%[0-9]+]]:gr64 =
; CHECK-NEXT: DBG_VALUE [[REG1]], $noreg, ![[FOO1]], !DIExpression()
entry1:
call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !20, metadata !DIExpression()), !dbg !23
call void @llvm.dbg.value(metadata %struct.SS* null, metadata !22, metadata !DIExpression()), !dbg !24
ret i32 ptrtoint (%struct.SS* @S to i32), !dbg !25
}
; Verify that the def comes before the for foo2 and bar2.
define i32 @test2() local_unnamed_addr #0 !dbg !26 {
; CHECK-LABEL: bb.0.entry2
; CHECK-NEXT: [[REG2:%[0-9]+]]:gr64 =
; CHECK-NEXT: DBG_VALUE [[REG2]], $noreg, ![[FOO2]], !DIExpression()
; CHECK-NEXT: DBG_VALUE [[REG2]], $noreg, ![[BAR2]], !DIExpression()
entry2:
call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !28, metadata !DIExpression()), !dbg !30
call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !29, metadata !DIExpression()), !dbg !31
ret i32 add (i32 ptrtoint (%struct.SS* @S to i32), i32 ptrtoint (%struct.SS* @S to i32)), !dbg !32
}
; Verify that the def comes before the for foo3 and bar3.
define i32 @test3() local_unnamed_addr #0 !dbg !33 {
; CHECK-LABEL: bb.0.entry3
; CHECK-NEXT: [[REG3:%[0-9]+]]:gr64 =
; CHECK-NEXT: DBG_VALUE [[REG3]], $noreg, ![[BAR3]], !DIExpression()
; CHECK-NEXT: DBG_VALUE [[REG3]], $noreg, ![[FOO3]], !DIExpression()
entry3:
call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !36, metadata !DIExpression()), !dbg !38
call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !35, metadata !DIExpression()), !dbg !37
ret i32 add (i32 ptrtoint (%struct.SS* @S to i32), i32 ptrtoint (%struct.SS* @S to i32)), !dbg !39
}
; Verify that the def comes before the for bar4.
define i32 @test4() local_unnamed_addr #0 !dbg !40 {
; CHECK-LABEL: bb.0.entry4
; CHECK-NEXT: DBG_VALUE $noreg, $noreg, ![[FOO4]], !DIExpression()
; CHECK-NEXT: DBG_VALUE 0, $noreg, ![[FOO4]], !DIExpression()
; CHECK-NEXT: [[REG4:%[0-9]+]]:gr64 =
; CHECK-NEXT: DBG_VALUE [[REG4]], $noreg, ![[BAR4]], !DIExpression()
entry4:
call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !42, metadata !DIExpression()), !dbg !44
call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !43, metadata !DIExpression()), !dbg !45
call void @llvm.dbg.value(metadata %struct.SS* null, metadata !42, metadata !DIExpression()), !dbg !44
ret i32 ptrtoint (%struct.SS* @S to i32), !dbg !46
}
; Verify that we do not get a DBG_VALUE that maps foo5 to @S here.
define i32 @test5() local_unnamed_addr #0 !dbg !47 {
; CHECK-LABEL: bb.0.entry5:
; CHECK-NEXT: DBG_VALUE $noreg, $noreg, ![[FOO5]], !DIExpression()
; CHECK-NEXT: DBG_VALUE 0, $noreg, ![[FOO5]], !DIExpression()
; CHECK-NEXT: [[REG5:%[0-9]+]]:gr64 =
; CHECK-NEXT: DBG_VALUE [[REG5]], $noreg, ![[BAR5]], !DIExpression()
; CHECK-NOT: DBG_VALUE [[REG5]], $noreg, ![[FOO5]], !DIExpression()
; CHECK: RET
entry5:
call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !49, metadata !DIExpression()), !dbg !51
call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !50, metadata !DIExpression()), !dbg !52
call void @llvm.dbg.value(metadata %struct.SS* null, metadata !50, metadata !DIExpression()), !dbg !52
ret i32 ptrtoint (%struct.SS* @S to i32), !dbg !53
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { nounwind readnone uwtable }
attributes #1 = { nounwind readnone speculatable }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!12, !13, !14, !15}
!llvm.ident = !{!16}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "S", scope: !2, file: !3, line: 4, type: !8, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (trunk 327229) (llvm/trunk 327239)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !7)
!3 = !DIFile(filename: "sdag-dangling-dbgvalue.c", directory: "/repo/uabbpet/llvm-master")
!4 = !{}
!5 = !{!6}
!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!7 = !{!0}
!8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "SS", file: !3, line: 1, size: 64, elements: !9)
!9 = !{!10, !11}
!10 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !8, file: !3, line: 2, baseType: !6, size: 32)
!11 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !8, file: !3, line: 3, baseType: !6, size: 32, offset: 32)
!12 = !{i32 2, !"Dwarf Version", i32 2}
!13 = !{i32 2, !"Debug Info Version", i32 3}
!14 = !{i32 1, !"wchar_size", i32 4}
!15 = !{i32 7, !"PIC Level", i32 2}
!16 = !{!"clang version 7.0.0 (trunk 327229) (llvm/trunk 327239)"}
!17 = distinct !DISubprogram(name: "test1", scope: !3, file: !3, line: 6, type: !18, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: true, unit: !2, retainedNodes: !19)
!18 = !DISubroutineType(types: !5)
!19 = !{!20, !22}
!20 = !DILocalVariable(name: "foo1", scope: !17, file: !3, line: 7, type: !21)
!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64)
!22 = !DILocalVariable(name: "bar1", scope: !17, file: !3, line: 8, type: !21)
!23 = !DILocation(line: 7, column: 14, scope: !17)
!24 = !DILocation(line: 8, column: 14, scope: !17)
!25 = !DILocation(line: 9, column: 3, scope: !17)
!26 = distinct !DISubprogram(name: "test2", scope: !3, file: !3, line: 12, type: !18, isLocal: false, isDefinition: true, scopeLine: 12, isOptimized: true, unit: !2, retainedNodes: !27)
!27 = !{!28, !29}
!28 = !DILocalVariable(name: "foo2", scope: !26, file: !3, line: 13, type: !21)
!29 = !DILocalVariable(name: "bar2", scope: !26, file: !3, line: 14, type: !21)
!30 = !DILocation(line: 13, column: 14, scope: !26)
!31 = !DILocation(line: 14, column: 14, scope: !26)
!32 = !DILocation(line: 15, column: 3, scope: !26)
!33 = distinct !DISubprogram(name: "test3", scope: !3, file: !3, line: 18, type: !18, isLocal: false, isDefinition: true, scopeLine: 18, isOptimized: true, unit: !2, retainedNodes: !34)
!34 = !{!35, !36}
!35 = !DILocalVariable(name: "bar3", scope: !33, file: !3, line: 19, type: !21)
!36 = !DILocalVariable(name: "foo3", scope: !33, file: !3, line: 20, type: !21)
!37 = !DILocation(line: 19, column: 14, scope: !33)
!38 = !DILocation(line: 20, column: 14, scope: !33)
!39 = !DILocation(line: 21, column: 3, scope: !33)
!40 = distinct !DISubprogram(name: "test4", scope: !3, file: !3, line: 24, type: !18, isLocal: false, isDefinition: true, scopeLine: 24, isOptimized: true, unit: !2, retainedNodes: !41)
!41 = !{!42, !43}
!42 = !DILocalVariable(name: "foo4", scope: !40, file: !3, line: 25, type: !21)
!43 = !DILocalVariable(name: "bar4", scope: !40, file: !3, line: 26, type: !21)
!44 = !DILocation(line: 25, column: 14, scope: !40)
!45 = !DILocation(line: 26, column: 14, scope: !40)
!46 = !DILocation(line: 28, column: 3, scope: !40)
!47 = distinct !DISubprogram(name: "test5", scope: !3, file: !3, line: 31, type: !18, isLocal: false, isDefinition: true, scopeLine: 31, isOptimized: true, unit: !2, retainedNodes: !48)
!48 = !{!49, !50}
!49 = !DILocalVariable(name: "bar5", scope: !47, file: !3, line: 32, type: !21)
!50 = !DILocalVariable(name: "foo5", scope: !47, file: !3, line: 33, type: !21)
!51 = !DILocation(line: 32, column: 14, scope: !47)
!52 = !DILocation(line: 33, column: 14, scope: !47)
!53 = !DILocation(line: 35, column: 3, scope: !47)
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