| ; RUN: llc -mtriple=x86_64-apple-macosx10.9.0 %s -stop-after=livedebugvars \ |
| ; RUN: -o - | FileCheck %s |
| ; Generated from: |
| ; void g(int *); |
| ; int f() { |
| ; int x = 23; |
| ; g(&x); |
| ; if (x == 42) |
| ; ++x; |
| ; return x; // check that x is not a constant here. |
| ; } |
| ; CHECK: ![[X:.*]] = !DILocalVariable(name: "x", |
| ; CHECK: bb.0.entry: |
| ; CHECK: DBG_VALUE 23, $noreg, ![[X]], |
| ; CHECK: DBG_VALUE $rsp, $noreg, ![[X]], !DIExpression(DW_OP_plus_uconst, 4, DW_OP_deref), |
| ; CHECK: bb.1.if.then: |
| ; CHECK: DBG_VALUE 43, $noreg, ![[X]], |
| ; CHECK: bb.2.if.end: |
| ; CHECK-NOT: DBG_VALUE 23, $noreg, ![[X]], |
| ; CHECK: RET64 $eax |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.11.0" |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define i32 @f() #0 !dbg !4 { |
| entry: |
| %x = alloca i32, align 4 |
| %0 = bitcast i32* %x to i8*, !dbg !14 |
| call void @llvm.lifetime.start(i64 4, i8* %0) #4, !dbg !14 |
| tail call void @llvm.dbg.value(metadata i32 23, metadata !9, metadata !15), !dbg !16 |
| store i32 23, i32* %x, align 4, !dbg !16, !tbaa !17 |
| tail call void @llvm.dbg.value(metadata i32* %x, metadata !9, metadata !DIExpression(DW_OP_deref)), !dbg !16 |
| call void @g(i32* nonnull %x) #4, !dbg !21 |
| call void @llvm.dbg.value(metadata i32* %x, metadata !9, metadata !DIExpression(DW_OP_deref)), !dbg !16 |
| %1 = load i32, i32* %x, align 4, !dbg !22, !tbaa !17 |
| %cmp = icmp eq i32 %1, 42, !dbg !24 |
| br i1 %cmp, label %if.then, label %if.end, !dbg !25 |
| |
| if.then: ; preds = %entry |
| call void @llvm.dbg.value(metadata i32 43, metadata !9, metadata !15), !dbg !16 |
| store i32 43, i32* %x, align 4, !dbg !26, !tbaa !17 |
| br label %if.end, !dbg !26 |
| |
| if.end: ; preds = %if.then, %entry |
| %2 = phi i32 [ 43, %if.then ], [ %1, %entry ], !dbg !27 |
| call void @llvm.dbg.value(metadata i32* %x, metadata !9, metadata !DIExpression(DW_OP_deref)), !dbg !16 |
| call void @llvm.lifetime.end(i64 4, i8* %0) #4, !dbg !28 |
| ret i32 %2, !dbg !29 |
| } |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.start(i64, i8* nocapture) #1 |
| |
| declare void @g(i32*) #4 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.end(i64, i8* nocapture) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #3 |
| |
| attributes #0 = { nounwind ssp uwtable } |
| attributes #1 = { argmemonly nounwind } |
| attributes #3 = { nounwind readnone } |
| attributes #4 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!10, !11, !12} |
| !llvm.ident = !{!13} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 255890) (llvm/trunk 255919)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "constant.c", directory: "") |
| !2 = !{} |
| !4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !0, retainedNodes: !8) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7} |
| !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !8 = !{!9} |
| !9 = !DILocalVariable(name: "x", scope: !4, file: !1, line: 3, type: !7) |
| !10 = !{i32 2, !"Dwarf Version", i32 2} |
| !11 = !{i32 2, !"Debug Info Version", i32 3} |
| !12 = !{i32 1, !"PIC Level", i32 2} |
| !13 = !{!"clang version 3.8.0 (trunk 255890) (llvm/trunk 255919)"} |
| !14 = !DILocation(line: 3, column: 3, scope: !4) |
| !15 = !DIExpression() |
| !16 = !DILocation(line: 3, column: 7, scope: !4) |
| !17 = !{!18, !18, i64 0} |
| !18 = !{!"int", !19, i64 0} |
| !19 = !{!"omnipotent char", !20, i64 0} |
| !20 = !{!"Simple C/C++ TBAA"} |
| !21 = !DILocation(line: 4, column: 3, scope: !4) |
| !22 = !DILocation(line: 5, column: 7, scope: !23) |
| !23 = distinct !DILexicalBlock(scope: !4, file: !1, line: 5, column: 7) |
| !24 = !DILocation(line: 5, column: 9, scope: !23) |
| !25 = !DILocation(line: 5, column: 7, scope: !4) |
| !26 = !DILocation(line: 6, column: 5, scope: !23) |
| !27 = !DILocation(line: 7, column: 10, scope: !4) |
| !28 = !DILocation(line: 8, column: 1, scope: !4) |
| !29 = !DILocation(line: 7, column: 3, scope: !4) |