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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