| ; RUN: llc -mtriple=x86_64-unknown-unknown -start-after=codegenprepare \ |
| ; RUN: -stop-before finalize-isel %s -o - \ |
| ; RUN: -experimental-debug-variable-locations=false \ |
| ; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE |
| ; RUN: llc -mtriple=x86_64-unknown-unknown -start-after=codegenprepare \ |
| ; RUN: -stop-before finalize-isel %s -o - \ |
| ; RUN: -experimental-debug-variable-locations=true \ |
| ; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF |
| |
| ; Test that the dbg.value for %baz, which doesn't exist in the 'next' bb, |
| ; can be salvaged back to the underlying argument vreg. |
| |
| ; CHECK: ![[AAAVAR:.*]] = !DILocalVariable(name: "aaa", |
| ; CHECK-LABEL: bb.0.entry: |
| ; INSTRREF: DBG_PHI $rdi, 1 |
| ; CHECK-LABEL: bb.1.next: |
| ; INSTRREF: DBG_INSTR_REF ![[AAAVAR]], {{.+}}, dbg-instr-ref(1, 0)
|
| ; DBGVALUE: DBG_VALUE %{{[0-9]+}}, $noreg, ![[AAAVAR]] |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-linux-gnu" |
| |
| define i8 @f(ptr %foo) local_unnamed_addr !dbg !6 { |
| entry: |
| %bar = getelementptr i32, ptr %foo, i32 4 |
| %quux = load i8, ptr %bar |
| br label %next |
| |
| next: ; preds = %entry |
| tail call void @llvm.dbg.value(metadata ptr %bar, metadata !15, metadata !DIExpression()), !dbg !30 |
| %xyzzy = add i8 %quux, 123 |
| br label %fin |
| |
| fin: ; preds = %next |
| %trains = getelementptr i32, ptr %foo, i32 3 |
| %cars = load i8, ptr %trains |
| %ret = add i8 %xyzzy, %cars |
| ret i8 %ret |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #0 |
| |
| attributes #0 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!25, !26, !27, !28} |
| !llvm.ident = !{!29} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "test.c", directory: ".") |
| !2 = !{} |
| !6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 18, type: !7, scopeLine: 19, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !14) |
| !7 = !DISubroutineType(types: !8) |
| !8 = !{!13} |
| !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_unsigned) |
| !14 = !{!15} |
| !15 = !DILocalVariable(name: "aaa", scope: !6, file: !1, line: 18, type: !13) |
| !25 = !{i32 2, !"Dwarf Version", i32 4} |
| !26 = !{i32 2, !"Debug Info Version", i32 3} |
| !27 = !{i32 1, !"wchar_size", i32 4} |
| !28 = !{i32 7, !"PIC Level", i32 2} |
| !29 = !{!"clang"} |
| !30 = !DILocation(line: 18, column: 14, scope: !6) |