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
109 lines
4.8 KiB
LLVM
109 lines
4.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes='loop-mssa(simple-loop-unswitch<nontrivial>),verify<loops>' -S < %s | FileCheck %s
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; RUN: opt -passes='loop-mssa(simple-loop-unswitch<nontrivial>),verify<loops>' -S < %s --try-experimental-debuginfo-iterators | FileCheck %s
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;
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;; Check that when we duplicate the load in the loop header, we also duplicate
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;; the corresponding dbg.value.
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;; FIXME: the hoisted load dominates the duplicated dbg.value, however as it's
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;; not subsequently used in the loop, so it doesn't get remapped into the
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;; debug user and we get a undef/poison dbg.value. This is suboptimal, but it's
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;; important that the dbg.value gets duplicated nonetheless.
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declare void @clobber()
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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define i32 @partial_unswitch_true_successor(ptr %ptr, i32 %N) {
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; CHECK-LABEL: @partial_unswitch_true_successor(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[PTR:%.*]], align 4
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], 100
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; CHECK-NEXT: br i1 [[TMP1]], label [[ENTRY_SPLIT_US:%.*]], label [[ENTRY_SPLIT:%.*]]
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; CHECK: entry.split.us:
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; CHECK-NEXT: br label [[LOOP_HEADER_US:%.*]]
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; CHECK: loop.header.us:
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; CHECK-NEXT: [[IV_US:%.*]] = phi i32 [ 0, [[ENTRY_SPLIT_US]] ], [ [[IV_NEXT_US:%.*]], [[LOOP_LATCH_US:%.*]] ]
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; CHECK-NEXT: #dbg_value(i32 poison, [[META3:![0-9]+]], !DIExpression(), [[META8:![0-9]+]])
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; CHECK-NEXT: br label [[NOCLOBBER_US:%.*]]
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; CHECK: noclobber.us:
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; CHECK-NEXT: br label [[LOOP_LATCH_US]]
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; CHECK: loop.latch.us:
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; CHECK-NEXT: [[C_US:%.*]] = icmp ult i32 [[IV_US]], [[N:%.*]]
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; CHECK-NEXT: [[IV_NEXT_US]] = add i32 [[IV_US]], 1
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; CHECK-NEXT: br i1 [[C_US]], label [[LOOP_HEADER_US]], label [[EXIT_SPLIT_US:%.*]]
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; CHECK: exit.split.us:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: entry.split:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY_SPLIT]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[LV:%.*]] = load i32, ptr [[PTR]], align 4
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; CHECK-NEXT: #dbg_value(i32 [[LV]], [[META3]], !DIExpression(), [[META8]])
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; CHECK-NEXT: [[SC:%.*]] = icmp eq i32 [[LV]], 100
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; CHECK-NEXT: br i1 [[SC]], label [[NOCLOBBER:%.*]], label [[CLOBBER:%.*]]
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; CHECK: noclobber:
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; CHECK-NEXT: br label [[LOOP_LATCH]]
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; CHECK: clobber:
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: br label [[LOOP_LATCH]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[C:%.*]] = icmp ult i32 [[IV]], [[N]]
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; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1
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; CHECK-NEXT: br i1 [[C]], label [[LOOP_HEADER]], label [[EXIT_SPLIT:%.*]], !llvm.loop [[LOOP9:![0-9]+]]
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; CHECK: exit.split:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret i32 10
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;
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
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%lv = load i32, ptr %ptr
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call void @llvm.dbg.value(metadata i32 %lv, metadata !6, metadata !DIExpression()), !dbg !7
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%sc = icmp eq i32 %lv, 100
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br i1 %sc, label %noclobber, label %clobber
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noclobber:
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br label %loop.latch
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clobber:
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call void @clobber()
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br label %loop.latch
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loop.latch:
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%c = icmp ult i32 %iv, %N
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%iv.next = add i32 %iv, 1
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br i1 %c, label %loop.header, label %exit
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exit:
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ret i32 10
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}
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!llvm.module.flags = !{!21}
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!llvm.dbg.cu = !{!2}
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!0 = distinct !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !2, file: !20, scope: !1, type: !3)
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!1 = !DIFile(filename: "b.c", directory: "/private/tmp")
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang", isOptimized: true, emissionKind: FullDebug, file: !20)
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!3 = !DISubroutineType(types: !4)
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!4 = !{!5}
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!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!6 = !DILocalVariable(name: "i", line: 2, arg: 1, scope: !0, file: !1, type: !5)
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!7 = !DILocation(line: 2, column: 13, scope: !0)
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!9 = !DILocalVariable(name: "k", line: 3, scope: !10, file: !1, type: !5)
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!10 = distinct !DILexicalBlock(line: 2, column: 16, file: !20, scope: !0)
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!11 = !DILocation(line: 3, column: 12, scope: !10)
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!12 = !DILocation(line: 4, column: 3, scope: !10)
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!13 = !DILocation(line: 5, column: 5, scope: !14)
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!14 = distinct !DILexicalBlock(line: 4, column: 10, file: !20, scope: !10)
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!15 = !DILocation(line: 6, column: 3, scope: !14)
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!16 = !DILocation(line: 7, column: 5, scope: !17)
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!17 = distinct !DILexicalBlock(line: 6, column: 10, file: !20, scope: !10)
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!18 = !DILocation(line: 8, column: 3, scope: !17)
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!19 = !DILocation(line: 9, column: 3, scope: !10)
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!20 = !DIFile(filename: "b.c", directory: "/private/tmp")
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!21 = !{i32 1, !"Debug Info Version", i32 3}
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