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
90 lines
4.8 KiB
LLVM
90 lines
4.8 KiB
LLVM
; RUN: opt -S -loop-reduce %s -o - | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators -S -loop-reduce %s -o - | FileCheck %s
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; REQUIRES: x86-registered-target
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;; Ensure that we retain debuginfo for the induction variable and dependant
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;; variables when loop strength reduction is applied to the loop.
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;; This IR produced from:
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;;
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;; clang -S -emit-llvm -Xclang -disable-llvm-passes -g lsr-basic.cpp -o
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;; Then executing opt -O2 up to the the loopFullUnroll pass.
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;; void mul_pow_of_2_to_shift_var_inc(unsigned size, unsigned *data, unsigned multiplicand) {
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;; unsigned i = 0;
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;; #pragma clang loop vectorize(disable)
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;; while (i < size) {
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;; unsigned comp = i * multiplicand;
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;; data[i] = comp;
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;; i++;
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;; }
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;; }
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; CHECK: #dbg_value(i64 %lsr.iv, ![[i:[0-9]+]], !DIExpression(),
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; CHECK: #dbg_value(!DIArgList(i64 %lsr.iv, i32 %multiplicand), ![[comp:[0-9]+]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_mul, DW_OP_stack_value),
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; CHECK: #dbg_value(i64 %lsr.iv, ![[i]], !DIExpression(DW_OP_consts, 1, DW_OP_plus, DW_OP_stack_value),
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; CHECK: ![[i]] = !DILocalVariable(name: "i"
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; CHECK: ![[comp]] = !DILocalVariable(name: "comp"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@__const.main.data = private unnamed_addr constant [16 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15], align 16
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define dso_local void @_Z21mul_pow_of_2_to_shiftjPjj(i32 %size, ptr nocapture %data, i32 %multiplicand) local_unnamed_addr !dbg !7 {
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entry:
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call void @llvm.dbg.value(metadata i32 %size, metadata !12, metadata !DIExpression()), !dbg !13
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call void @llvm.dbg.value(metadata ptr %data, metadata !14, metadata !DIExpression()), !dbg !13
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call void @llvm.dbg.value(metadata i32 %multiplicand, metadata !15, metadata !DIExpression()), !dbg !13
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call void @llvm.dbg.value(metadata i32 0, metadata !16, metadata !DIExpression()), !dbg !13
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br label %while.cond, !dbg !13
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while.cond: ; preds = %while.body, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %while.body ], !dbg !13
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call void @llvm.dbg.value(metadata i32 %i.0, metadata !16, metadata !DIExpression()), !dbg !13
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%cmp = icmp ult i32 %i.0, %size, !dbg !13
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br i1 %cmp, label %while.body, label %while.end, !dbg !13
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while.body: ; preds = %while.cond
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%mul = mul i32 %i.0, %multiplicand, !dbg !17
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call void @llvm.dbg.value(metadata i32 %mul, metadata !19, metadata !DIExpression()), !dbg !17
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%idxprom = zext i32 %i.0 to i64, !dbg !17
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%arrayidx = getelementptr inbounds i32, ptr %data, i64 %idxprom, !dbg !17
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store i32 %mul, ptr %arrayidx, align 4, !dbg !17
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%inc = add nuw i32 %i.0, 1, !dbg !17
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call void @llvm.dbg.value(metadata i32 %inc, metadata !16, metadata !DIExpression()), !dbg !13
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br label %while.cond, !dbg !13, !llvm.loop !20
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while.end: ; preds = %while.cond
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ret void, !dbg !13
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "basic.cpp", directory: "/test")
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!2 = !{}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 13.0.0"}
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!7 = distinct !DISubprogram(name: "mul_pow_of_2_to_shift", linkageName: "_Z21mul_pow_of_2_to_shiftjPjj", scope: !1, file: !1, line: 17, type: !8, scopeLine: 17, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null, !10, !11, !10}
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!10 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
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!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)
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!12 = !DILocalVariable(name: "size", arg: 1, scope: !7, file: !1, line: 17, type: !10)
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!13 = !DILocation(line: 0, scope: !7)
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!14 = !DILocalVariable(name: "data", arg: 2, scope: !7, file: !1, line: 17, type: !11)
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!15 = !DILocalVariable(name: "multiplicand", arg: 3, scope: !7, file: !1, line: 17, type: !10)
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!16 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 18, type: !10)
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!17 = !DILocation(line: 21, column: 27, scope: !18)
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!18 = distinct !DILexicalBlock(scope: !7, file: !1, line: 20, column: 22)
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!19 = !DILocalVariable(name: "comp", scope: !18, file: !1, line: 21, type: !10)
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!20 = distinct !{!20, !21, !22, !23, !24}
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!21 = !DILocation(line: 20, column: 5, scope: !7)
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!22 = !DILocation(line: 24, column: 5, scope: !7)
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!23 = !{!"llvm.loop.mustprogress"}
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!24 = !{!"llvm.loop.vectorize.width", i32 1}
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