172 lines
9.2 KiB
LLVM
172 lines
9.2 KiB
LLVM
; RUN: llc -O3 -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -print-after virtregrewriter < %s >%t 2>&1 && FileCheck <%t %s
|
|
|
|
; This test checks that DBG_VALUE instruction placed correctly.
|
|
; Specifically: if Register Allocator inserts additional instructions
|
|
; in the beginning of basic block then it should not break placement
|
|
; of DBG_VALUE for loop index variable. That DBG_VALUE instruction
|
|
; for "i" variable should be placed before any real loop instruction.
|
|
; https://reviews.llvm.org/D62650
|
|
|
|
; Created from the following C source:
|
|
|
|
; cat test_debug_val.cpp
|
|
;
|
|
; void func(int, ...);
|
|
;
|
|
; int array[0x100];
|
|
;
|
|
; int main( int argc, char **argv )
|
|
; {
|
|
; int var = 56;
|
|
;
|
|
; int a1 = array[1]; int a2 = array[2]; int a3 = array[3]; int a4 = array[4];
|
|
; int a5 = array[5]; int a6 = array[6]; int a7 = array[7]; int a8 = array[8];
|
|
; int a9 = array[9]; int a10 = array[10];
|
|
;
|
|
; for( int i = 0; i < 0x100; i++ ) {
|
|
;
|
|
; array[i] = var;
|
|
;
|
|
; func(0, i, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10 );
|
|
; }
|
|
;
|
|
; return 0;
|
|
; }
|
|
;
|
|
;
|
|
; clang -O3 -g -c --target=aarch64-unknown-linux -std=gnu++14 test_debug_val.cpp -emit-llvm -S -o -
|
|
|
|
|
|
; CHECK: bb.2.for.body
|
|
; CHECK-NEXT: predecessors
|
|
; CHECK-NEXT: successors
|
|
; CHECK-NEXT: liveins
|
|
; CHECK-NOT: MOV
|
|
; CHECK: DBG_VALUE $[[REG:[xw][0-9]+]], $noreg, !"i"
|
|
; CHECK: MOV
|
|
|
|
; ModuleID = 'test_debug_val.cpp'
|
|
source_filename = "test_debug_val.cpp"
|
|
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
|
|
target triple = "aarch64-unknown-linux"
|
|
|
|
@array = dso_local local_unnamed_addr global [256 x i32] zeroinitializer, align 4, !dbg !0
|
|
|
|
; Function Attrs: norecurse
|
|
define dso_local i32 @main(i32 %argc, i8** nocapture readnone %argv) local_unnamed_addr #0 !dbg !14 {
|
|
entry:
|
|
call void @llvm.dbg.value(metadata i32 %argc, metadata !21, metadata !DIExpression()), !dbg !36
|
|
call void @llvm.dbg.value(metadata i8** %argv, metadata !22, metadata !DIExpression()), !dbg !36
|
|
call void @llvm.dbg.value(metadata i32 56, metadata !23, metadata !DIExpression()), !dbg !36
|
|
%0 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 1), align 4, !dbg !37
|
|
call void @llvm.dbg.value(metadata i32 %0, metadata !24, metadata !DIExpression()), !dbg !36
|
|
%1 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 2), align 4, !dbg !42
|
|
call void @llvm.dbg.value(metadata i32 %1, metadata !25, metadata !DIExpression()), !dbg !36
|
|
%2 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 3), align 4, !dbg !43
|
|
call void @llvm.dbg.value(metadata i32 %2, metadata !26, metadata !DIExpression()), !dbg !36
|
|
%3 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 4), align 4, !dbg !44
|
|
call void @llvm.dbg.value(metadata i32 %3, metadata !27, metadata !DIExpression()), !dbg !36
|
|
%4 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 5), align 4, !dbg !45
|
|
call void @llvm.dbg.value(metadata i32 %4, metadata !28, metadata !DIExpression()), !dbg !36
|
|
%5 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 6), align 4, !dbg !46
|
|
call void @llvm.dbg.value(metadata i32 %5, metadata !29, metadata !DIExpression()), !dbg !36
|
|
%6 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 7), align 4, !dbg !47
|
|
call void @llvm.dbg.value(metadata i32 %6, metadata !30, metadata !DIExpression()), !dbg !36
|
|
%7 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 8), align 4, !dbg !48
|
|
call void @llvm.dbg.value(metadata i32 %7, metadata !31, metadata !DIExpression()), !dbg !36
|
|
%8 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 9), align 4, !dbg !49
|
|
call void @llvm.dbg.value(metadata i32 %8, metadata !32, metadata !DIExpression()), !dbg !36
|
|
%9 = load i32, i32* getelementptr inbounds ([256 x i32], [256 x i32]* @array, i64 0, i64 10), align 4, !dbg !50
|
|
call void @llvm.dbg.value(metadata i32 %9, metadata !33, metadata !DIExpression()), !dbg !36
|
|
call void @llvm.dbg.value(metadata i32 0, metadata !34, metadata !DIExpression()), !dbg !51
|
|
br label %for.body, !dbg !52
|
|
|
|
for.cond.cleanup: ; preds = %for.body
|
|
ret i32 0, !dbg !53
|
|
|
|
for.body: ; preds = %for.body, %entry
|
|
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
|
|
call void @llvm.dbg.value(metadata i64 %indvars.iv, metadata !34, metadata !DIExpression()), !dbg !51
|
|
%arrayidx = getelementptr inbounds [256 x i32], [256 x i32]* @array, i64 0, i64 %indvars.iv, !dbg !54
|
|
store i32 56, i32* %arrayidx, align 4, !dbg !57
|
|
%10 = trunc i64 %indvars.iv to i32, !dbg !58
|
|
tail call void (i32, ...) @_Z4funciz(i32 0, i32 %10, i32 %0, i32 %1, i32 %2, i32 %3, i32 %4, i32 %5, i32 %6, i32 %7, i32 %8, i32 %9), !dbg !58
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !59
|
|
call void @llvm.dbg.value(metadata i32 undef, metadata !34, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !51
|
|
%exitcond = icmp eq i64 %indvars.iv.next, 256, !dbg !60
|
|
br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !52, !llvm.loop !61
|
|
}
|
|
|
|
declare dso_local void @_Z4funciz(i32, ...) local_unnamed_addr #1
|
|
|
|
; Function Attrs: nounwind readnone speculatable
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata) #2
|
|
|
|
attributes #0 = { nounwind uwtable }
|
|
attributes #1 = { nounwind uwtable }
|
|
attributes #2 = { nounwind readnone speculatable }
|
|
|
|
!llvm.dbg.cu = !{!2}
|
|
!llvm.module.flags = !{!10, !11, !12}
|
|
!llvm.ident = !{!13}
|
|
|
|
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
|
|
!1 = distinct !DIGlobalVariable(name: "array", scope: !2, file: !3, line: 4, type: !6, isLocal: false, isDefinition: true)
|
|
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 9.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None)
|
|
!3 = !DIFile(filename: "test_debug_val.cpp", directory: "")
|
|
!4 = !{}
|
|
!5 = !{!0}
|
|
!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 8192, elements: !8)
|
|
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
|
!8 = !{!9}
|
|
!9 = !DISubrange(count: 256)
|
|
!10 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!11 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!12 = !{i32 1, !"wchar_size", i32 4}
|
|
!13 = !{!"clang version 9.0.0 "}
|
|
!14 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 6, type: !15, scopeLine: 7, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !20)
|
|
!15 = !DISubroutineType(types: !16)
|
|
!16 = !{!7, !7, !17}
|
|
!17 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !18, size: 64)
|
|
!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)
|
|
!19 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_unsigned_char)
|
|
!20 = !{!21, !22, !23, !24, !25, !26, !27, !28, !29, !30, !31, !32, !33, !34}
|
|
!21 = !DILocalVariable(name: "argc", arg: 1, scope: !14, file: !3, line: 6, type: !7)
|
|
!22 = !DILocalVariable(name: "argv", arg: 2, scope: !14, file: !3, line: 6, type: !17)
|
|
!23 = !DILocalVariable(name: "var", scope: !14, file: !3, line: 8, type: !7)
|
|
!24 = !DILocalVariable(name: "a1", scope: !14, file: !3, line: 10, type: !7)
|
|
!25 = !DILocalVariable(name: "a2", scope: !14, file: !3, line: 10, type: !7)
|
|
!26 = !DILocalVariable(name: "a3", scope: !14, file: !3, line: 10, type: !7)
|
|
!27 = !DILocalVariable(name: "a4", scope: !14, file: !3, line: 10, type: !7)
|
|
!28 = !DILocalVariable(name: "a5", scope: !14, file: !3, line: 11, type: !7)
|
|
!29 = !DILocalVariable(name: "a6", scope: !14, file: !3, line: 11, type: !7)
|
|
!30 = !DILocalVariable(name: "a7", scope: !14, file: !3, line: 11, type: !7)
|
|
!31 = !DILocalVariable(name: "a8", scope: !14, file: !3, line: 11, type: !7)
|
|
!32 = !DILocalVariable(name: "a9", scope: !14, file: !3, line: 12, type: !7)
|
|
!33 = !DILocalVariable(name: "a10", scope: !14, file: !3, line: 12, type: !7)
|
|
!34 = !DILocalVariable(name: "i", scope: !35, file: !3, line: 14, type: !7)
|
|
!35 = distinct !DILexicalBlock(scope: !14, file: !3, line: 14, column: 4)
|
|
!36 = !DILocation(line: 0, scope: !14)
|
|
!37 = !DILocation(line: 10, column: 13, scope: !14)
|
|
!42 = !DILocation(line: 10, column: 32, scope: !14)
|
|
!43 = !DILocation(line: 10, column: 51, scope: !14)
|
|
!44 = !DILocation(line: 10, column: 70, scope: !14)
|
|
!45 = !DILocation(line: 11, column: 13, scope: !14)
|
|
!46 = !DILocation(line: 11, column: 32, scope: !14)
|
|
!47 = !DILocation(line: 11, column: 51, scope: !14)
|
|
!48 = !DILocation(line: 11, column: 70, scope: !14)
|
|
!49 = !DILocation(line: 12, column: 13, scope: !14)
|
|
!50 = !DILocation(line: 12, column: 33, scope: !14)
|
|
!51 = !DILocation(line: 0, scope: !35)
|
|
!52 = !DILocation(line: 14, column: 4, scope: !35)
|
|
!53 = !DILocation(line: 21, column: 4, scope: !14)
|
|
!54 = !DILocation(line: 16, column: 8, scope: !55)
|
|
!55 = distinct !DILexicalBlock(scope: !56, file: !3, line: 14, column: 37)
|
|
!56 = distinct !DILexicalBlock(scope: !35, file: !3, line: 14, column: 4)
|
|
!57 = !DILocation(line: 16, column: 17, scope: !55)
|
|
!58 = !DILocation(line: 18, column: 8, scope: !55)
|
|
!59 = !DILocation(line: 14, column: 32, scope: !56)
|
|
!60 = !DILocation(line: 14, column: 22, scope: !56)
|
|
!61 = distinct !{!61, !52, !62}
|
|
!62 = !DILocation(line: 19, column: 4, scope: !35)
|