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08fbde827c
The debug-use flag must be set exactly for uses on DBG_VALUEs. This is so obvious that it can be trivially inferred while parsing. This will reduce noise when printing while omitting an information that has little value to the user. The parser will keep recognizing the flag for compatibility with old `.mir` files. Differential Revision: https://reviews.llvm.org/D53903 llvm-svn: 345671
83 lines
3.6 KiB
LLVM
83 lines
3.6 KiB
LLVM
; RUN: llc < %s -print-machineinstrs 2>&1 | FileCheck %s
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; CHECK: After WebAssembly Register Stackify:
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; CHECK: bb.2.for.body:
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; CHECK: [[REG:%[0-9]+]]:i32 = TEE_I32 {{.*}} fib2.c:6:7
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; CHECK-NEXT: DBG_VALUE [[REG]]:i32, $noreg, !"a", {{.*}} fib2.c:2:13
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; CHECK: After WebAssembly Register Coloring:
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; ModuleID = 'fib2.bc'
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; The test generated via: clang --target=wasm32-unknown-unknown-wasm fib2.c -g -O2
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; All non-"!dbg !18" llvm.dbg.value calls and attributes were removed.
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source_filename = "fib2.c"
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; int fib(int n) {
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; int i, t, a = 0, b = 1;
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; for (i = 0; i < n; i++) {
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; t = a;
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; a = b;
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; b += t;
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; }
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; return b;
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; }
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown-wasm"
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; Function Attrs: nounwind readnone
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define hidden i32 @fib(i32 %n) local_unnamed_addr #0 !dbg !7 {
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entry:
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call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !DIExpression()), !dbg !18
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%cmp8 = icmp sgt i32 %n, 0, !dbg !21
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br i1 %cmp8, label %for.body, label %for.end, !dbg !24
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for.body: ; preds = %entry, %for.body
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%b.011 = phi i32 [ %add, %for.body ], [ 1, %entry ]
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%a.010 = phi i32 [ %b.011, %for.body ], [ 0, %entry ]
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%i.09 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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call void @llvm.dbg.value(metadata i32 %a.010, metadata !15, metadata !DIExpression()), !dbg !18
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%add = add nsw i32 %b.011, %a.010, !dbg !26
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%inc = add nuw nsw i32 %i.09, 1, !dbg !28
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call void @llvm.dbg.value(metadata i32 %b.011, metadata !15, metadata !DIExpression()), !dbg !18
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%exitcond = icmp eq i32 %inc, %n, !dbg !21
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br i1 %exitcond, label %for.end, label %for.body, !dbg !24, !llvm.loop !29
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for.end: ; preds = %for.body, %entry
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%b.0.lcssa = phi i32 [ 1, %entry ], [ %add, %for.body ]
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ret i32 %b.0.lcssa, !dbg !31
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 (trunk 337180)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "fib2.c", directory: "/d/y/llvmwasm")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 7.0.0 (trunk 337180)"}
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!7 = distinct !DISubprogram(name: "fib", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!15}
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!15 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 2, type: !10)
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!17 = !DILocation(line: 1, column: 13, scope: !7)
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!18 = !DILocation(line: 2, column: 13, scope: !7)
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!19 = !DILocation(line: 2, column: 20, scope: !7)
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!20 = !DILocation(line: 2, column: 7, scope: !7)
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!21 = !DILocation(line: 3, column: 17, scope: !22)
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!22 = distinct !DILexicalBlock(scope: !23, file: !1, line: 3, column: 3)
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!23 = distinct !DILexicalBlock(scope: !7, file: !1, line: 3, column: 3)
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!24 = !DILocation(line: 3, column: 3, scope: !23)
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!25 = !DILocation(line: 2, column: 10, scope: !7)
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!26 = !DILocation(line: 6, column: 7, scope: !27)
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!27 = distinct !DILexicalBlock(scope: !22, file: !1, line: 3, column: 27)
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!28 = !DILocation(line: 3, column: 23, scope: !22)
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!29 = distinct !{!29, !24, !30}
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!30 = !DILocation(line: 7, column: 3, scope: !23)
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!31 = !DILocation(line: 8, column: 3, scope: !7)
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