094572701d
This patch makes the final major change of the RemoveDIs project, changing the default IR output from debug intrinsics to debug records. This is expected to break a large number of tests: every single one that tests for uses or declarations of debug intrinsics and does not explicitly disable writing records. If this patch has broken your downstream tests (or upstream tests on a configuration I wasn't able to run): 1. If you need to immediately unblock a build, pass `--write-experimental-debuginfo=false` to LLVM's option processing for all failing tests (remember to use `-mllvm` for clang/flang to forward arguments to LLVM). 2. For most test failures, the changes are trivial and mechanical, enough that they can be done by script; see the migration guide for a guide on how to do this: https://llvm.org/docs/RemoveDIsDebugInfo.html#test-updates 3. If any tests fail for reasons other than FileCheck check lines that need updating, such as assertion failures, that is most likely a real bug with this patch and should be reported as such. For more information, see the recent PSA: https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578
84 lines
2.9 KiB
LLVM
84 lines
2.9 KiB
LLVM
; RUN: opt -passes=mem2reg,instcombine %s -o - -S | FileCheck %s
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; RUN: opt -passes=mem2reg,instcombine %s -o - -S --try-experimental-debuginfo-iterators | FileCheck %s
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;
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; Test that a dbg.declare describing am alloca with volatile
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; load/stores is not lowered into a dbg.value, since the alloca won't
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; be elided anyway.
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;
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; Generated from:
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;
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; unsigned long long g();
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; void h(unsigned long long);
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; void f() {
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; volatile unsigned long long v = g();
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; if (v == 0)
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; g();
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; h(v);
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; }
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; CHECK: alloca i64
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; CHECK-NOT: #dbg_value
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; CHECK: #dbg_declare
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; CHECK-NOT: #dbg_value
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source_filename = "volatile.c"
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; Function Attrs: nounwind optsize ssp uwtable
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define void @f() local_unnamed_addr #0 !dbg !8 {
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%1 = alloca i64, align 8
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call void @llvm.lifetime.start.p0(i64 8, ptr %1), !dbg !15
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call void @llvm.dbg.declare(metadata ptr %1, metadata !12, metadata !DIExpression()), !dbg !15
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%2 = call i64 (...) @g() #4, !dbg !15
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store volatile i64 %2, ptr %1, align 8, !dbg !15
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%3 = load volatile i64, ptr %1, align 8, !dbg !15
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%4 = icmp eq i64 %3, 0, !dbg !15
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br i1 %4, label %5, label %7, !dbg !15
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; <label>:6: ; preds = %0
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%6 = call i64 (...) @g() #4, !dbg !15
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br label %7, !dbg !15
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; <label>:8: ; preds = %5, %0
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%8 = load volatile i64, ptr %1, align 8, !dbg !15
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call void @h(i64 %8) #4, !dbg !15
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call void @llvm.lifetime.end.p0(i64 8, ptr %1), !dbg !15
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ret void, !dbg !15
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}
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #1
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
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; Function Attrs: optsize
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declare i64 @g(...) local_unnamed_addr #3
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; Function Attrs: optsize
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declare void @h(i64) local_unnamed_addr #3
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #1
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attributes #0 = { nounwind optsize ssp uwtable }
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attributes #1 = { argmemonly nounwind }
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attributes #2 = { nounwind readnone speculatable }
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attributes #3 = { optsize }
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attributes #4 = { optsize }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
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!1 = !DIFile(filename: "volatile.c", directory: "/")
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 3, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !0, retainedNodes: !11)
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!9 = !DISubroutineType(types: !10)
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!10 = !{null}
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!11 = !{!12}
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!12 = !DILocalVariable(name: "v", scope: !8, file: !1, line: 4, type: !13)
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!13 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !14)
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!14 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned)
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!15 = !DILocation(line: 4, column: 3, scope: !8)
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