| ; RUN: llc -O0 %s -mtriple=aarch64 -stop-after=phi-node-elimination -o - | FileCheck %s |
| |
| ; Test that a DEBUG_VALUE node is create for variable c after the phi has been |
| ; converted to a ldr. The DEBUG_VALUE must be *after* the ldr and not before it. |
| |
| ; Created from the C code, compiled with -O0 -g and then passed through opt -mem2reg: |
| ; |
| ; int func(int a) |
| ; { |
| ; int c = 1; |
| ; if (a < 0 ) { |
| ; c = 12; |
| ; } |
| ; return c; |
| ; } |
| ; |
| ; Function Attrs: nounwind |
| ; CHECK: !14 = !DILocalVariable(name: "c" |
| ; CHECK-LABEL: name: func |
| define i32 @func(i32 %a0) #0 !dbg !8 { |
| entry: |
| call void @llvm.dbg.value(metadata i32 %a0, i64 0, metadata !12, metadata !13), !dbg !14 |
| call void @llvm.dbg.value(metadata i32 1, i64 0, metadata !15, metadata !13), !dbg !16 |
| %v2 = icmp slt i32 %a0, 0, !dbg !17 |
| br i1 %v2, label %bb2, label %bb3, !dbg !19 |
| |
| bb2: |
| call void @llvm.dbg.value(metadata i32 12, i64 0, metadata !15, metadata !13), !dbg !16 |
| br label %bb3, !dbg !20 |
| |
| ; CHECK: bb.2.bb2: |
| ; CHECK: [[REG0:%[0-9]+]]:gpr32 = MOVi32imm 12 |
| ; CHECK: [[PHIREG:%[0-9]+]]:gpr32 = COPY [[REG0]] |
| |
| bb3: |
| ; CHECK: bb.3.bb3: |
| ; CHECK: [[PHIDEST:%[0-9]+]]:gpr32 = COPY [[PHIREG]] |
| ; CHECK-NEXT: DBG_VALUE [[PHIDEST]] |
| %.0 = phi i32 [ 12, %bb2 ], [ 1, %entry ] |
| call void @llvm.dbg.value(metadata i32 %.0, i64 0, metadata !15, metadata !13), !dbg !16 |
| ; CHECK: [[ADD:%[0-9]+]]:gpr32 = nsw ADDWrr [[PHIDEST]] |
| ; CHECK-NEXT: DBG_VALUE [[ADD]] |
| %v5 = add nsw i32 %.0, %a0, !dbg !22 |
| call void @llvm.dbg.value(metadata i32 %v5, i64 0, metadata !15, metadata !13), !dbg !16 |
| ret i32 %v5, !dbg !23 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind } |
| attributes #1 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5, !6} |
| !llvm.ident = !{!7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !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, !"wchar_size", i32 4} |
| !6 = !{i32 1, !"min_enum_size", i32 4} |
| !7 = !{!"clang"} |
| !8 = distinct !DISubprogram(name: "func", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{!11, !11} |
| !11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !12 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 1, type: !11) |
| !13 = !DIExpression() |
| !14 = !DILocation(line: 1, column: 14, scope: !8) |
| !15 = !DILocalVariable(name: "c", scope: !8, file: !1, line: 3, type: !11) |
| !16 = !DILocation(line: 3, column: 13, scope: !8) |
| !17 = !DILocation(line: 4, column: 15, scope: !18) |
| !18 = distinct !DILexicalBlock(scope: !8, file: !1, line: 4, column: 13) |
| !19 = !DILocation(line: 4, column: 13, scope: !8) |
| !20 = !DILocation(line: 6, column: 9, scope: !21) |
| !21 = distinct !DILexicalBlock(scope: !18, file: !1, line: 4, column: 21) |
| !22 = !DILocation(line: 7, column: 4, scope: !8) |
| !23 = !DILocation(line: 8, column: 9, scope: !8) |