derek.holloway
7502bf64a4
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97 lines
3.4 KiB
YAML
97 lines
3.4 KiB
YAML
# Restrict the number of instructions per info to 4
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# RUN: llc -mtriple=x86_64-pc-windows-msvc -o - %s \
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# RUN: -x86-wineh-unwindv2-instruction-count-threshold=4 \
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# RUN: -run-pass=x86-wineh-unwindv2 | FileCheck %s \
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# RUN: -check-prefixes=ALLOWLESS,CHECK
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# RUN: llc -mtriple=x86_64-pc-windows-msvc -o - %s \
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# RUN: -x86-wineh-unwindv2-instruction-count-threshold=4 \
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# RUN: -passes=x86-wineh-unwindv2 | FileCheck %s \
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# RUN: -check-prefixes=ALLOWLESS,CHECK
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# Allow the default number of instructions per info
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# RUN: llc -mtriple=x86_64-pc-windows-msvc -o - %s \
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# RUN: -run-pass=x86-wineh-unwindv2 | FileCheck %s \
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# RUN: -check-prefixes=ALLOWMORE,CHECK
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# RUN: llc -mtriple=x86_64-pc-windows-msvc -o - %s \
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# RUN: -passes=x86-wineh-unwindv2 | FileCheck %s \
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# RUN: -check-prefixes=ALLOWMORE,CHECK
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--- |
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define dso_local void @too_many_instr() local_unnamed_addr !dbg !9 {
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entry:
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ret void, !dbg !10
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3, !4, !5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "/app/example.c", directory: "/app")
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!2 = !{i32 1, !"winx64-eh-unwindv2", i32 2}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"CodeView", i32 1}
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = !DIFile(filename: "example.c", directory: "/app")
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!7 = !DISubroutineType(types: !8)
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!8 = !{null}
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!9 = distinct !DISubprogram(name: "too_many_instr", scope: !6, file: !6, line: 1, type: !7, scopeLine: 2, spFlags: DISPFlagDefinition, unit: !0)
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!10 = !DILocation(line: 2, column: 1, scope: !9)
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!11 = !DILocation(line: 3, column: 1, scope: !9)
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!12 = !DILocation(line: 4, column: 1, scope: !9)
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!13 = !DILocation(line: 5, column: 1, scope: !9)
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...
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---
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name: too_many_instr
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body: |
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bb.0.entry:
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frame-setup SEH_EndPrologue
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SEH_BeginEpilogue
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SEH_EndEpilogue
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RET64 debug-location !10
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bb.1:
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$rcx = MOV64rr $rax
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SEH_BeginEpilogue
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SEH_EndEpilogue
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RET64 debug-location !11
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bb.2:
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$rcx = MOV64rr $rax
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SEH_BeginEpilogue
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SEH_EndEpilogue
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RET64 debug-location !12
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bb.3:
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$rcx = MOV64rr $rax
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$rcx = MOV64rr $rax
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$rcx = MOV64rr $rax
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SEH_BeginEpilogue
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SEH_EndEpilogue
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RET64 debug-location !13
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...
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# CHECK-LABEL: too_many_instr
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# CHECK-LABEL: bb.0.entry:
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# bb.1 + bb.2 have enough instructions that bb.0 has its own info.
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# ALLOWLESS: SEH_SplitChainedAtEndOfBlock
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# ALLOWMORE-NOT: SEH_SplitChainedAtEndOfBlock
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# CHECK: SEH_UnwindV2Start
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# CHECK: RET64 debug-location !10
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# CHECK-LABEL: bb.1
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# bb.2 doesn't fill the current info, so bb.1 gets added as well.
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# CHECK-NOT: SEH_SplitChainedAtEndOfBlock
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# CHECK: SEH_UnwindV2Start
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# CHECK: RET64 debug-location !DILocation(line: 3, column: 1, scope: !6)
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# CHECK-LABEL: bb.2
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# bb.3 has enough instructions by itself that bb.2 needs to split.
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# ALLOWLESS-NEXT: SEH_SplitChainedAtEndOfBlock
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# ALLOWMORE-NOT: SEH_SplitChainedAtEndOfBlock
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# CHECK: SEH_UnwindV2Start
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# CHECK: RET64 debug-location !DILocation(line: 4, column: 1, scope: !6)
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# CHECK-LABEL: bb.3
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# Never split at the end.
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# CHECK-NOT: SEH_SplitChainedAtEndOfBlock
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# CHECK: SEH_UnwindV2Start
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# CHECK: RET64 debug-location !DILocation(line: 5, column: 1, scope: !6)
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