1 ; RUN: llc < %s -verify-machineinstrs -mtriple=wasm32-unknown-unknown | FileCheck %s
2 ; RUN: llc < %s -verify-machineinstrs -mtriple=wasm32-unknown-unknown -fast-isel | FileCheck --check-prefix=CHECK-FAST %s
4 ; CHECK: DW_TAG_variable
5 ; CHECK-FAST: DW_TAG_variable
7 ; Test that llvm.dbg.declare() instrinsics do not crash the backend
9 source_filename = "test/DebugInfo/WebAssembly/dbg-declare.ll"
10 target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
11 target triple = "wasm32-unknown-unknown"
13 @key = external global [15 x i8], align 1
15 define internal zeroext i8 @0(i32, i8 zeroext) !dbg !15 !type !20 {
16 %3 = alloca i32, align 4
17 %4 = alloca i8, align 1
18 store i32 %0, i32* %3, align 4
19 call void @llvm.dbg.declare(metadata i32* %3, metadata !21, metadata !22), !dbg !23
20 store i8 %1, i8* %4, align 1
21 call void @llvm.dbg.declare(metadata i8* %4, metadata !24, metadata !22), !dbg !25
22 %5 = load i8, i8* %4, align 1, !dbg !26
23 %6 = zext i8 %5 to i32, !dbg !26
24 %7 = load i32, i32* %3, align 4, !dbg !27
25 %8 = urem i32 %7, 15, !dbg !28
26 %9 = getelementptr inbounds [15 x i8], [15 x i8]* @key, i32 0, i32 %8, !dbg !29
27 %10 = load i8, i8* %9, align 1, !dbg !29
28 %11 = zext i8 %10 to i32, !dbg !29
29 %12 = xor i32 %6, %11, !dbg !30
30 %13 = trunc i32 %12 to i8, !dbg !31
34 ; Function Attrs: nounwind readnone
36 declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
38 attributes #0 = { nounwind readnone }
41 !llvm.module.flags = !{!12, !13}
44 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 273884) (llvm/trunk 273897)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
45 !1 = !DIFile(filename: "crash.c", directory: "wasm/tests")
48 !4 = distinct !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
49 !5 = !DIGlobalVariable(name: "key", scope: !0, file: !1, line: 7, type: !6, isLocal: false, isDefinition: true)
50 !6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 120, align: 8, elements: !10)
51 !7 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !8, line: 185, baseType: !9)
52 !8 = !DIFile(filename: "wasm/emscripten/system/include/libc/bits/alltypes.h", directory: "wasm/tests")
53 !9 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
55 !11 = !DISubrange(count: 15)
56 !12 = !{i32 2, !"Dwarf Version", i32 4}
57 !13 = !{i32 2, !"Debug Info Version", i32 3}
58 !14 = !{!"clang version 3.9.0 (trunk 273884) (llvm/trunk 273897)"}
59 !15 = distinct !DISubprogram(name: "decode", scope: !1, file: !1, line: 11, type: !16, isLocal: false, isDefinition: true, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
60 !16 = !DISubroutineType(types: !17)
62 !18 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", file: !8, line: 124, baseType: !19)
63 !19 = !DIBasicType(name: "long unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
64 !20 = !{i64 0, !"_ZTSFhmhE"}
65 !21 = !DILocalVariable(name: "i", arg: 1, scope: !15, file: !1, line: 11, type: !18)
67 !23 = !DILocation(line: 11, column: 23, scope: !15)
68 !24 = !DILocalVariable(name: "v", arg: 2, scope: !15, file: !1, line: 11, type: !7)
69 !25 = !DILocation(line: 11, column: 34, scope: !15)
70 !26 = !DILocation(line: 12, column: 11, scope: !15)
71 !27 = !DILocation(line: 12, column: 19, scope: !15)
72 !28 = !DILocation(line: 12, column: 21, scope: !15)
73 !29 = !DILocation(line: 12, column: 15, scope: !15)
74 !30 = !DILocation(line: 12, column: 13, scope: !15)
75 !31 = !DILocation(line: 12, column: 10, scope: !15)
76 !32 = !DILocation(line: 12, column: 3, scope: !15)