| ; RUN: llc --verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown --spirv-ext=+SPV_KHR_non_semantic_info %s -o - | FileCheck %s --implicit-check-not=DebugDeclare | |
| ; RUN: %if spirv-tools %{ llc --verify-machineinstrs --spirv-ext=+SPV_KHR_non_semantic_info -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %} | |
| ; An alloca whose only use is the declare, which is what clang emits at -O0 for | |
| ; an unused local. Nothing keeps the alloca alive, so no OpVariable is left to | |
| ; point at and the declare is dropped. The DebugLocalVariable still describes | |
| ; the variable. | |
| ; CHECK: OpExtInst {{.*}} DebugLocalVariable | |
| target triple = "spirv64-unknown-unknown" | |
| define spir_func void @f() !dbg !5 { | |
| entry: | |
| %unused = alloca i32, align 4 | |
| #dbg_declare(ptr %unused, !9, !DIExpression(), !10) | |
| ret void, !dbg !10 | |
| } | |
| !llvm.dbg.cu = !{!0} | |
| !llvm.module.flags = !{!2, !3} | |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) | |
| !1 = !DIFile(filename: "debug-declare-dead-alloca.c", directory: "/src") | |
| !2 = !{i32 7, !"Dwarf Version", i32 5} | |
| !3 = !{i32 2, !"Debug Info Version", i32 3} | |
| !4 = !DISubroutineType(types: !6) | |
| !6 = !{null} | |
| !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) | |
| !5 = distinct !DISubprogram(name: "f", linkageName: "f", scope: !1, file: !1, line: 1, type: !4, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0) | |
| !9 = !DILocalVariable(name: "unused", scope: !5, file: !1, line: 2, type: !7) | |
| !10 = !DILocation(line: 3, column: 1, scope: !5) |