Index: test/wasm/debug-removed-fn.ll =================================================================== --- test/wasm/debug-removed-fn.ll +++ test/wasm/debug-removed-fn.ll @@ -0,0 +1,44 @@ +; RUN: llc -filetype=obj < %s -o %t.o +; RUN: wasm-ld %t.o --no-entry --export=foo -o %t.wasm +; RUN: llvm-dwarfdump -debug-line %t.wasm | FileCheck %s + +; CHECK: Address +; CHECK: 0x0000000000000005 +; CHECK: 0x0000000000000000 + +; ModuleID = 't.bc' +target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" +target triple = "wasm32-unknown-unknown-wasm" + +; Function Attrs: noinline nounwind optnone +define hidden i32 @foo() #0 !dbg !7 { +entry: + ret i32 42, !dbg !11 +} + +; Function Attrs: noinline nounwind optnone +define hidden i32 @bar() #0 !dbg !12 { +entry: + ret i32 6, !dbg !13 +} + +attributes #0 = { noinline nounwind optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" } + +!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 337293)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) +!1 = !DIFile(filename: "t.c", directory: "/d/y") +!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 337293)"} +!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, unit: !0, retainedNodes: !2) +!8 = !DISubroutineType(types: !9) +!9 = !{!10} +!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!11 = !DILocation(line: 2, column: 3, scope: !7) +!12 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 5, type: !8, isLocal: false, isDefinition: true, scopeLine: 5, isOptimized: false, unit: !0, retainedNodes: !2) +!13 = !DILocation(line: 6, column: 3, scope: !12) Index: wasm/InputFiles.cpp =================================================================== --- wasm/InputFiles.cpp +++ wasm/InputFiles.cpp @@ -149,8 +149,9 @@ return getGlobalSymbol(Reloc.Index)->getGlobalIndex(); case R_WEBASSEMBLY_FUNCTION_OFFSET_I32: if (auto *Sym = dyn_cast(getFunctionSymbol(Reloc.Index))) { - return Sym->Function->OutputOffset + - Sym->Function->getFunctionCodeOffset() + Reloc.Addend; + if (Sym->isLive()) + return Sym->Function->OutputOffset + + Sym->Function->getFunctionCodeOffset() + Reloc.Addend; } return 0; case R_WEBASSEMBLY_SECTION_OFFSET_I32: