| ; RUN: opt -instcombine-lower-dbg-declare=0 < %s -passes=instcombine -S | FileCheck %s |
| ; RUN: opt -instcombine-lower-dbg-declare=1 < %s -passes=instcombine -S | FileCheck %s |
| |
| define i32 @foo(i32 %j) #0 !dbg !7 { |
| entry: |
| %j.addr = alloca i32, align 4 |
| store i32 %j, ptr %j.addr, align 4 |
| call void @llvm.dbg.declare(metadata ptr %j.addr, metadata !11, metadata !12), !dbg !13 |
| call void @llvm.dbg.value(metadata i32 10, metadata !16, metadata !12), !dbg !15 |
| %0 = load i32, ptr %j.addr, align 4, !dbg !14 |
| ret i32 %0, !dbg !15 |
| } |
| |
| ; Instcombine can remove the alloca and forward the load to store, but it |
| ; should convert the declare to dbg value. |
| ; CHECK-LABEL: define i32 @foo(i32 %j) |
| ; CHECK-NOT: alloca |
| ; CHECK: call void @llvm.dbg.value(metadata i32 %j, {{.*}}) |
| ; CHECK: call void @llvm.dbg.value(metadata i32 10, {{.*}}) |
| ; CHECK: ret i32 %j |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang 5.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug) |
| !1 = !DIFile(filename: "a.c", directory: "/tmp") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"PIC Level", i32 2} |
| !6 = !{!"clang version 5.0.0 (trunk 302918) (llvm/trunk 302925)"} |
| !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10, !10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !DILocalVariable(name: "j", arg: 1, scope: !7, file: !1, line: 2, type: !10) |
| !12 = !DIExpression() |
| !13 = !DILocation(line: 2, column: 13, scope: !7) |
| !14 = !DILocation(line: 5, column: 10, scope: !7) |
| !15 = !DILocation(line: 5, column: 3, scope: !7) |
| !16 = !DILocalVariable(name: "h", scope: !7, file: !1, line: 4, type: !10) |