| ; RUN: llc < %s -print-machineinstrs 2>&1 | FileCheck %s |
| |
| ; CHECK: After WebAssembly Register Stackify: |
| ; CHECK: bb.3.for.body.for.body_crit_edge: |
| ; CHECK: [[REG:%[0-9]+]]:i32 = nsw ADD_I32 {{.*}} fib.c:7:7 |
| ; CHECK-NEXT: DBG_VALUE [[REG]]:i32, $noreg, !"a", {{.*}} fib.c:5:13 |
| ; CHECK: After WebAssembly Register Coloring: |
| |
| ; ModuleID = 'fib.bc' |
| ; The test generated via: clang --target=wasm32-unknown-unknown-wasm fib.c -g -O2 |
| ; All lifetime markers and attributes were removed. |
| source_filename = "fib.c" |
| ; void swap(int* a, int* b); |
| ; |
| ; __attribute__ ((visibility ("default"))) |
| ; int fib(int n) { |
| ; int i, t, a = 0, b = 1; |
| ; for (i = 0; i < n; i++) { |
| ; a += b; |
| ; swap(&a, &b); |
| ; } |
| ; return b; |
| ; } |
| target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" |
| target triple = "wasm32-unknown-unknown-wasm" |
| |
| ; Function Attrs: nounwind |
| define i32 @fib(i32 %n) local_unnamed_addr #0 !dbg !7 { |
| entry: |
| %a = alloca i32, align 4 |
| %b = alloca i32, align 4 |
| call void @llvm.dbg.value(metadata i32 %n, metadata !12, metadata !DIExpression()), !dbg !17 |
| %0 = bitcast i32* %a to i8*, !dbg !18 |
| call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !DIExpression()), !dbg !19 |
| store i32 0, i32* %a, align 4, !dbg !19, !tbaa !20 |
| %1 = bitcast i32* %b to i8*, !dbg !18 |
| call void @llvm.dbg.value(metadata i32 1, metadata !16, metadata !DIExpression()), !dbg !24 |
| store i32 1, i32* %b, align 4, !dbg !24, !tbaa !20 |
| call void @llvm.dbg.value(metadata i32 0, metadata !13, metadata !DIExpression()), !dbg !25 |
| %cmp4 = icmp sgt i32 %n, 0, !dbg !26 |
| call void @llvm.dbg.value(metadata i32 1, metadata !16, metadata !DIExpression()), !dbg !24 |
| br i1 %cmp4, label %for.body.preheader, label %for.end, !dbg !29 |
| |
| for.body.preheader: ; preds = %entry |
| call void @llvm.dbg.value(metadata i32 0, metadata !13, metadata !DIExpression()), !dbg !25 |
| call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !DIExpression()), !dbg !19 |
| call void @llvm.dbg.value(metadata i32 1, metadata !15, metadata !DIExpression()), !dbg !19 |
| store i32 1, i32* %a, align 4, !dbg !30, !tbaa !20 |
| call void @llvm.dbg.value(metadata i32* %a, metadata !15, metadata !DIExpression()), !dbg !19 |
| call void @llvm.dbg.value(metadata i32* %b, metadata !16, metadata !DIExpression()), !dbg !24 |
| call void @swap(i32* nonnull %a, i32* nonnull %b) #5, !dbg !32 |
| call void @llvm.dbg.value(metadata i32 1, metadata !13, metadata !DIExpression()), !dbg !25 |
| %2 = load i32, i32* %b, align 4, !dbg !33, !tbaa !20 |
| call void @llvm.dbg.value(metadata i32 %2, metadata !16, metadata !DIExpression()), !dbg !24 |
| %exitcond9 = icmp eq i32 %n, 1, !dbg !26 |
| br i1 %exitcond9, label %for.end, label %for.body.for.body_crit_edge, !dbg !29, !llvm.loop !34 |
| |
| for.body.for.body_crit_edge: ; preds = %for.body.preheader, %for.body.for.body_crit_edge |
| %3 = phi i32 [ %4, %for.body.for.body_crit_edge ], [ %2, %for.body.preheader ] |
| %inc10 = phi i32 [ %inc, %for.body.for.body_crit_edge ], [ 1, %for.body.preheader ] |
| %.pre = load i32, i32* %a, align 4, !dbg !30, !tbaa !20 |
| call void @llvm.dbg.value(metadata i32 %inc10, metadata !13, metadata !DIExpression()), !dbg !25 |
| call void @llvm.dbg.value(metadata i32 %.pre, metadata !15, metadata !DIExpression()), !dbg !19 |
| %add = add nsw i32 %.pre, %3, !dbg !30 |
| call void @llvm.dbg.value(metadata i32 %add, metadata !15, metadata !DIExpression()), !dbg !19 |
| store i32 %add, i32* %a, align 4, !dbg !30, !tbaa !20 |
| call void @llvm.dbg.value(metadata i32* %a, metadata !15, metadata !DIExpression()), !dbg !19 |
| call void @llvm.dbg.value(metadata i32* %b, metadata !16, metadata !DIExpression()), !dbg !24 |
| call void @swap(i32* nonnull %a, i32* nonnull %b) #5, !dbg !32 |
| %inc = add nuw nsw i32 %inc10, 1, !dbg !36 |
| call void @llvm.dbg.value(metadata i32 %inc, metadata !13, metadata !DIExpression()), !dbg !25 |
| %4 = load i32, i32* %b, align 4, !dbg !33, !tbaa !20 |
| call void @llvm.dbg.value(metadata i32 %4, metadata !16, metadata !DIExpression()), !dbg !24 |
| %exitcond = icmp eq i32 %inc, %n, !dbg !26 |
| br i1 %exitcond, label %for.end, label %for.body.for.body_crit_edge, !dbg !29, !llvm.loop !34 |
| |
| for.end: ; preds = %for.body.for.body_crit_edge, %for.body.preheader, %entry |
| %.lcssa = phi i32 [ 1, %entry ], [ %2, %for.body.preheader ], [ %4, %for.body.for.body_crit_edge ] |
| ret i32 %.lcssa, !dbg !38 |
| } |
| |
| declare void @swap(i32*, i32*) local_unnamed_addr #2 |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #4 |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 (trunk 334610)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "fib.c", directory: "/d/y/llvmwasm") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 7.0.0 (trunk 334610)"} |
| !7 = distinct !DISubprogram(name: "fib", scope: !1, file: !1, line: 4, type: !8, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !{!12, !13, !14, !15, !16} |
| !12 = !DILocalVariable(name: "n", arg: 1, scope: !7, file: !1, line: 4, type: !10) |
| !13 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 5, type: !10) |
| !14 = !DILocalVariable(name: "t", scope: !7, file: !1, line: 5, type: !10) |
| !15 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 5, type: !10) |
| !16 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 5, type: !10) |
| !17 = !DILocation(line: 4, column: 13, scope: !7) |
| !18 = !DILocation(line: 5, column: 3, scope: !7) |
| !19 = !DILocation(line: 5, column: 13, scope: !7) |
| !20 = !{!21, !21, i64 0} |
| !21 = !{!"int", !22, i64 0} |
| !22 = !{!"omnipotent char", !23, i64 0} |
| !23 = !{!"Simple C/C++ TBAA"} |
| !24 = !DILocation(line: 5, column: 20, scope: !7) |
| !25 = !DILocation(line: 5, column: 7, scope: !7) |
| !26 = !DILocation(line: 6, column: 17, scope: !27) |
| !27 = distinct !DILexicalBlock(scope: !28, file: !1, line: 6, column: 3) |
| !28 = distinct !DILexicalBlock(scope: !7, file: !1, line: 6, column: 3) |
| !29 = !DILocation(line: 6, column: 3, scope: !28) |
| !30 = !DILocation(line: 7, column: 7, scope: !31) |
| !31 = distinct !DILexicalBlock(scope: !27, file: !1, line: 6, column: 27) |
| !32 = !DILocation(line: 8, column: 5, scope: !31) |
| !33 = !DILocation(line: 0, scope: !7) |
| !34 = distinct !{!34, !29, !35} |
| !35 = !DILocation(line: 9, column: 3, scope: !28) |
| !36 = !DILocation(line: 6, column: 23, scope: !27) |
| !37 = !DILocation(line: 11, column: 1, scope: !7) |
| !38 = !DILocation(line: 10, column: 3, scope: !7) |
| !39 = distinct !DISubprogram(name: "_start", scope: !1, file: !1, line: 13, type: !40, isLocal: false, isDefinition: true, scopeLine: 13, isOptimized: true, unit: !0, retainedNodes: !2) |
| !40 = !DISubroutineType(types: !41) |
| !41 = !{null} |
| !42 = !DILocation(line: 13, column: 16, scope: !39) |