Attachment 235950 Details for Bug 265756 – Much smaller test case for backend

Much smaller test case for backend

crc-min.ll.txt (text/plain), 3.90 KB, created by John F. Carr on 2022-08-16 20:27:37 UTC

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Creator: John F. Carr

Created: 2022-08-16 20:27:37 UTC

Size: 3.90 KB

patch

obsolete

>; ModuleID = 'crc-min.c'
>source_filename = "crc-min.c"
>target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
>target triple = "x86_64-unknown-freebsd14.0"
>
>; Function Attrs: nofree nosync nounwind readnone sspstrong uwtable
>define i32 @aws_checksums_crc32c_hw(i8* noundef %input, i32 noundef %previousCrc32) local_unnamed_addr #0 !dbg !9 {
>entry:
>  call void @llvm.dbg.value(metadata i8* %input, metadata !20, metadata !DIExpression()), !dbg !23
>  call void @llvm.dbg.value(metadata i32 %previousCrc32, metadata !21, metadata !DIExpression()), !dbg !23
>  %neg = xor i32 %previousCrc32, -1, !dbg !24
>  call void @llvm.dbg.value(metadata i32 %neg, metadata !22, metadata !DIExpression()), !dbg !23
>  %0 = tail call i32 asm "loop_leading_${:uid}: CRC32B ($2), $1", "={cx},{cx},r,0,~{dirflag},~{fpsr},~{flags}"(i32 %neg, i8* %input, i32 %neg) #2, !dbg !25, !srcloc !26
>  call void @llvm.dbg.value(metadata i32 %0, metadata !22, metadata !DIExpression()), !dbg !23
>  %neg1 = xor i32 %0, -1, !dbg !27
>  ret i32 %neg1, !dbg !28
>}
>
>; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
>declare void @llvm.dbg.value(metadata, metadata, metadata) #1
>
>attributes #0 = { nofree nosync nounwind readnone sspstrong uwtable "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
>attributes #1 = { nofree nosync nounwind readnone speculatable willreturn }
>attributes #2 = { nounwind readnone }
>
>!llvm.dbg.cu = !{!0}
>!llvm.module.flags = !{!2, !3, !4, !5, !6, !7}
>!llvm.ident = !{!8}
>
>!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 14.0.6 (git@github.com:OpenCilk/opencilk-project.git 523da9eb198f8260fc59681674bd4cd1c7db48c9)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
>!1 = !DIFile(filename: "crc32c_sse42_asm.c", directory: "/usr/ports/devel/py-awscrt/work-py39/awscrt-0.13.14/build/temp.freebsd-14.0-CURRENT-amd64-cpython-39/deps/aws-checksums")
>!2 = !{i32 7, !"Dwarf Version", i32 4}
>!3 = !{i32 2, !"Debug Info Version", i32 3}
>!4 = !{i32 1, !"wchar_size", i32 4}
>!5 = !{i32 7, !"PIC Level", i32 2}
>!6 = !{i32 7, !"uwtable", i32 1}
>!7 = !{i32 7, !"frame-pointer", i32 2}
>!8 = !{!"clang version 14.0.6 (git@github.com:OpenCilk/opencilk-project.git 523da9eb198f8260fc59681674bd4cd1c7db48c9)"}
>!9 = distinct !DISubprogram(name: "aws_checksums_crc32c_hw", scope: !10, file: !10, line: 4, type: !11, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !19)
>!10 = !DIFile(filename: "crc-min.c", directory: "/usr/ports/devel/py-awscrt/work-py39/awscrt-0.13.14/build/temp.freebsd-14.0-CURRENT-amd64-cpython-39/deps/aws-checksums")
>!11 = !DISubroutineType(types: !12)
>!12 = !{!13, !15, !13}
>!13 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint32_t", file: !10, line: 2, baseType: !14)
>!14 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
>!15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64)
>!16 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !17)
>!17 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !10, line: 1, baseType: !18)
>!18 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
>!19 = !{!20, !21, !22}
>!20 = !DILocalVariable(name: "input", arg: 1, scope: !9, file: !10, line: 4, type: !15)
>!21 = !DILocalVariable(name: "previousCrc32", arg: 2, scope: !9, file: !10, line: 4, type: !13)
>!22 = !DILocalVariable(name: "crc", scope: !9, file: !10, line: 5, type: !13)
>!23 = !DILocation(line: 0, scope: !9)
>!24 = !DILocation(line: 5, column: 20, scope: !9)
>!25 = !DILocation(line: 6, column: 5, scope: !9)
>!26 = !{i64 193}
>!27 = !DILocation(line: 7, column: 12, scope: !9)
>!28 = !DILocation(line: 7, column: 5, scope: !9)

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Attachments on bug 265756: 235946 | 235947 | 235950