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
91 lines
4.0 KiB
LLVM
91 lines
4.0 KiB
LLVM
; RUN: opt -S -passes=callsite-splitting -o - < %s | FileCheck %s --check-prefixes=CHECK,CHECK-DEBUG
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; RUN: opt -S -strip-debug -passes=callsite-splitting -o - < %s | FileCheck %s
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define internal i16 @bar(i16 %p1, i16 %p2) {
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%_tmp3 = mul i16 %p2, %p1
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ret i16 %_tmp3
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}
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define i16 @foo(i16 %in) {
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bb0:
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%a = alloca i16, align 4, !DIAssignID !12
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call void @llvm.dbg.assign(metadata i1 undef, metadata !11, metadata !DIExpression(), metadata !12, metadata ptr %a, metadata !DIExpression()), !dbg !8
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store i16 7, ptr %a, align 4, !DIAssignID !13
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br label %bb1
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bb1:
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%0 = icmp ne i16 %in, 0
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br i1 %0, label %bb2, label %CallsiteBB
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bb2:
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br label %CallsiteBB
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CallsiteBB:
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%1 = phi i16 [ 0, %bb1 ], [ 1, %bb2 ]
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%c = phi i16 [ 2, %bb1 ], [ 3, %bb2 ]
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%p = phi ptr [ %a, %bb1 ], [ %a, %bb2 ]
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call void @llvm.dbg.value(metadata i16 %1, metadata !7, metadata !DIExpression()), !dbg !8
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call void @llvm.dbg.value(metadata i16 %c, metadata !7, metadata !DIExpression()), !dbg !8
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call void @llvm.dbg.value(metadata !DIArgList(i16 %1, i16 %c), metadata !7, metadata !DIExpression()), !dbg !8
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call void @llvm.dbg.value(metadata !DIArgList(i16 %c, i16 %c), metadata !7, metadata !DIExpression()), !dbg !8
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call void @llvm.dbg.assign(metadata i16 %1, metadata !11, metadata !DIExpression(), metadata !13, metadata ptr %a, metadata !DIExpression()), !dbg !8
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call void @llvm.dbg.assign(metadata i16 %c, metadata !11, metadata !DIExpression(), metadata !13, metadata ptr %a, metadata !DIExpression()), !dbg !8
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call void @llvm.dbg.assign(metadata i16 %1, metadata !11, metadata !DIExpression(), metadata !13, metadata ptr %p, metadata !DIExpression()), !dbg !8
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%2 = call i16 @bar(i16 %1, i16 5)
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ret i16 %2
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #0
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declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata)
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attributes #0 = { nounwind readnone speculatable }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3}
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!llvm.ident = !{!4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "My Compiler")
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!1 = !DIFile(filename: "foo.c", directory: "/bar")
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!2 = !{i32 2, !"Dwarf Version", i32 4}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{!"My Compiler"}
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!5 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
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!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, unit: !0)
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!7 = !DILocalVariable(name: "c", scope: !6, line: 5, type: !5)
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!8 = !DILocation(line: 5, column: 7, scope: !6)
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!11 = !DILocalVariable(name: "a", scope: !6, line: 6, type: !5)
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!12 = distinct !DIAssignID()
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!13 = distinct !DIAssignID()
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; The optimization should trigger even in the presence of the dbg.value in
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; CallSiteBB.
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; CHECK-LABEL: @foo
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; CHECK-LABEL: bb1.split:
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; CHECK-DEBUG: #dbg_value(i16 0, ![[DBG_1:[0-9]+]], {{.*}}
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; CHECK-DEBUG: #dbg_value(i16 2, ![[DBG_1]], {{.*}}
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; CHECK-DEBUG: #dbg_value(!DIArgList(i16 0, i16 2), {{.*}}
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; CHECK-DEBUG: #dbg_value(!DIArgList(i16 2, i16 2), {{.*}}
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; CHECK-DEBUG: #dbg_assign(i16 0, ![[DBG_2:[0-9]+]], {{.*}}
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; CHECK-DEBUG: #dbg_assign(i16 2, ![[DBG_2]], {{.*}}
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; CHECK-DEBUG: #dbg_assign(i16 0, ![[DBG_2]], !DIExpression(), ![[ID_1:[0-9]+]], ptr %a, {{.*}}
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; CHECK: [[TMP1:%[0-9]+]] = call i16 @bar(i16 0, i16 5)
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; CHECK-LABEL: bb2.split:
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; CHECK-DEBUG: #dbg_value(i16 1, ![[DBG_1]], {{.*}}
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; CHECK-DEBUG: #dbg_value(i16 3, ![[DBG_1]], {{.*}}
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; CHECK-DEBUG: #dbg_value(!DIArgList(i16 1, i16 3), {{.*}}
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; CHECK-DEBUG: #dbg_value(!DIArgList(i16 3, i16 3), {{.*}}
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; CHECK-DEBUG: #dbg_assign(i16 1, ![[DBG_2]], {{.*}}
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; CHECK-DEBUG: #dbg_assign(i16 3, ![[DBG_2]], {{.*}}
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; CHECK-DEBUG: #dbg_assign(i16 1, ![[DBG_2]], !DIExpression(), ![[ID_1:[0-9]+]], ptr %a, {{.*}}
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; CHECK: [[TMP2:%[0-9]+]] = call i16 @bar(i16 1, i16 5)
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; CHECK-LABEL: CallsiteBB
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; CHECK: %phi.call = phi i16 [ [[TMP2]], %bb2.split ], [ [[TMP1]], %bb1.split
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; CHECK-DEBUG-DAG: ![[DBG_1]] = !DILocalVariable(name: "c"{{.*}})
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; CHECK-DEBUG-DAG: ![[DBG_2]] = !DILocalVariable(name: "a"{{.*}})
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; CHECK-DEBUG-DAG: ![[ID_1]] = distinct !DIAssignID()
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