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[Debug info] Transfer DI to fragment expressions for split integer va…
…lues. This patch teaches the SDag type legalizer how to split up debug info for integer values that are split into a hi and lo part. Differential Revision: https://reviews.llvm.org/D36805 llvm-svn: 311102
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if not 'MSP430' in config.root.targets: | ||
config.unsupported = True |
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; RUN: llc %s -stop-after=livedebugvars -o %t | ||
; RUN: cat %t | FileCheck %s | ||
; | ||
; Test that we can emit debug info for large values that are split | ||
; up across multiple registers by the SelectionDAG type legalizer. | ||
; | ||
; // Compile with -O1 -m32. | ||
; long long foo (long long a, long long b) | ||
; { | ||
; long long res = b+1; | ||
; if ( a == b ) | ||
; return res; | ||
; return 0; | ||
; } | ||
; | ||
; CHECK: ![[MDN1:[0-9]+]] = !DIExpression(DW_OP_LLVM_fragment, 32, 16) | ||
; CHECK: ![[MDN2:[0-9]+]] = !DIExpression(DW_OP_LLVM_fragment, 48, 16) | ||
; CHECK: ![[MDN3:[0-9]+]] = !DIExpression(DW_OP_LLVM_fragment, 0, 16) | ||
; CHECK: ![[MDN4:[0-9]+]] = !DIExpression(DW_OP_LLVM_fragment, 16, 16) | ||
; CHECK-DAG: DBG_VALUE debug-use %r{{[0-9]+}}, debug-use _, !{{[0-9]+}}, ![[MDN1]], debug-location !{{[0-9]+}} | ||
; CHECK-DAG: DBG_VALUE debug-use %r{{[0-9]+}}, debug-use _, !{{[0-9]+}}, ![[MDN2]], debug-location !{{[0-9]+}} | ||
; CHECK-DAG: DBG_VALUE debug-use %r{{[0-9]+}}, debug-use _, !{{[0-9]+}}, ![[MDN3]], debug-location !{{[0-9]+}} | ||
; CHECK-DAG: DBG_VALUE debug-use %r{{[0-9]+}}, debug-use _, !{{[0-9]+}}, ![[MDN4]], debug-location !{{[0-9]+}} | ||
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; ModuleID = 'sdagsplit-1.c' | ||
target datalayout = "e-m:e-p:16:16-i32:16-i64:16-f32:16-f64:16-a:8-n8:16-S16" | ||
target triple = "msp430" | ||
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; Function Attrs: nounwind readnone | ||
define i64 @foo(i64 %a, i64 %b) local_unnamed_addr #0 !dbg !7 { | ||
entry: | ||
tail call void @llvm.dbg.value(metadata i64 %a, metadata !12, metadata !15), !dbg !16 | ||
tail call void @llvm.dbg.value(metadata i64 %b, metadata !13, metadata !15), !dbg !17 | ||
tail call void @llvm.dbg.value(metadata i64 %add, metadata !14, metadata !15), !dbg !18 | ||
%cmp = icmp eq i64 %a, %b, !dbg !19 | ||
%add = add nsw i64 %b, 1, !dbg !21 | ||
%retval.0 = select i1 %cmp, i64 %add, i64 0, !dbg !22 | ||
ret i64 %retval.0, !dbg !23 | ||
} | ||
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; Function Attrs: nounwind readnone speculatable | ||
declare void @llvm.dbg.value(metadata, metadata, metadata) #1 | ||
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attributes #0 = { nounwind readnone } | ||
attributes #1 = { nounwind readnone speculatable } | ||
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!llvm.dbg.cu = !{!0} | ||
!llvm.module.flags = !{!3, !4, !5} | ||
!llvm.ident = !{!6} | ||
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) | ||
!1 = !DIFile(filename: "sdagsplit-1.c", directory: "/MSP430") | ||
!2 = !{} | ||
!3 = !{i32 2, !"Dwarf Version", i32 2} | ||
!4 = !{i32 2, !"Debug Info Version", i32 3} | ||
!5 = !{i32 1, !"wchar_size", i32 2} | ||
!6 = !{!"clang version 6.0.0 "} | ||
!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !11) | ||
!8 = !DISubroutineType(types: !9) | ||
!9 = !{!10, !10, !10} | ||
!10 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed) | ||
!11 = !{!12, !13, !14} | ||
!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 2, type: !10) | ||
!13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 2, type: !10) | ||
!14 = !DILocalVariable(name: "res", scope: !7, file: !1, line: 4, type: !10) | ||
!15 = !DIExpression() | ||
!16 = !DILocation(line: 2, column: 26, scope: !7) | ||
!17 = !DILocation(line: 2, column: 39, scope: !7) | ||
!18 = !DILocation(line: 4, column: 12, scope: !7) | ||
!19 = !DILocation(line: 5, column: 9, scope: !20) | ||
!20 = distinct !DILexicalBlock(scope: !7, file: !1, line: 5, column: 7) | ||
!21 = !DILocation(line: 4, column: 19, scope: !7) | ||
!22 = !DILocation(line: 5, column: 7, scope: !7) | ||
!23 = !DILocation(line: 8, column: 1, scope: !7) |
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@@ -0,0 +1,71 @@ | ||
; RUN: llc %s -stop-after=livedebugvars -o %t | ||
; RUN: cat %t | FileCheck %s | ||
; | ||
; Test that we can emit debug info for large values that are split | ||
; up across multiple registers by the SelectionDAG type legalizer. | ||
; | ||
; // Compile with -O1 -m32. | ||
; long long foo (long long a, long long b) | ||
; { | ||
; long long res = b+1; | ||
; if ( a == b ) | ||
; return res; | ||
; return 0; | ||
; } | ||
; | ||
; CHECK: ![[MDN1:[0-9]+]] = !DIExpression(DW_OP_LLVM_fragment, 0, 32) | ||
; CHECK: ![[MDN2:[0-9]+]] = !DIExpression(DW_OP_LLVM_fragment, 32, 32) | ||
; CHECK-DAG: DBG_VALUE debug-use %{{[a-z]+}}, debug-use _, !{{[0-9]+}}, ![[MDN1]], debug-location !{{[0-9]+}} | ||
; CHECK-DAG: DBG_VALUE debug-use %{{[a-z]+}}, debug-use _, !{{[0-9]+}}, ![[MDN2]], debug-location !{{[0-9]+}} | ||
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; ModuleID = 'sdagsplit-1.c' | ||
target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128" | ||
target triple = "i386" | ||
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; Function Attrs: nounwind readnone | ||
define i64 @foo(i64 %a, i64 %b) local_unnamed_addr #0 !dbg !8 { | ||
entry: | ||
tail call void @llvm.dbg.value(metadata i64 %a, metadata !13, metadata !16), !dbg !17 | ||
tail call void @llvm.dbg.value(metadata i64 %b, metadata !14, metadata !16), !dbg !18 | ||
tail call void @llvm.dbg.value(metadata i64 %add, metadata !15, metadata !16), !dbg !19 | ||
%cmp = icmp eq i64 %a, %b, !dbg !20 | ||
%add = add nsw i64 %b, 1, !dbg !22 | ||
%retval.0 = select i1 %cmp, i64 %add, i64 0, !dbg !23 | ||
ret i64 %retval.0, !dbg !24 | ||
} | ||
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; Function Attrs: nounwind readnone speculatable | ||
declare void @llvm.dbg.value(metadata, metadata, metadata) #1 | ||
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attributes #0 = { nounwind readnone } | ||
attributes #1 = { nounwind readnone speculatable } | ||
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!llvm.dbg.cu = !{!0} | ||
!llvm.module.flags = !{!3, !4, !5, !6} | ||
!llvm.ident = !{!7} | ||
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) | ||
!1 = !DIFile(filename: "sdagsplit-1.c", directory: "/X86") | ||
!2 = !{} | ||
!3 = !{i32 1, !"NumRegisterParameters", i32 0} | ||
!4 = !{i32 2, !"Dwarf Version", i32 2} | ||
!5 = !{i32 2, !"Debug Info Version", i32 3} | ||
!6 = !{i32 1, !"wchar_size", i32 4} | ||
!7 = !{!"clang version 6.0.0 "} | ||
!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !12) | ||
!9 = !DISubroutineType(types: !10) | ||
!10 = !{!11, !11, !11} | ||
!11 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed) | ||
!12 = !{!13, !14, !15} | ||
!13 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 2, type: !11) | ||
!14 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 2, type: !11) | ||
!15 = !DILocalVariable(name: "res", scope: !8, file: !1, line: 4, type: !11) | ||
!16 = !DIExpression() | ||
!17 = !DILocation(line: 2, column: 26, scope: !8) | ||
!18 = !DILocation(line: 2, column: 39, scope: !8) | ||
!19 = !DILocation(line: 4, column: 12, scope: !8) | ||
!20 = !DILocation(line: 5, column: 9, scope: !21) | ||
!21 = distinct !DILexicalBlock(scope: !8, file: !1, line: 5, column: 7) | ||
!22 = !DILocation(line: 4, column: 19, scope: !8) | ||
!23 = !DILocation(line: 5, column: 7, scope: !8) | ||
!24 = !DILocation(line: 8, column: 1, scope: !8) |