f84c70a379
This fixes an assert firing when compiling code which involves 128 bit integrals. This would trigger runtime checks similar to this: ``` Assertion failed: getMinSignedBits() <= 64 && "Too many bits for int64_t", file llvm/include/llvm/ADT/APInt.h, line 1646 ``` To get around this, we just saturate those big values. Reviewed By: rnk Differential Revision: https://reviews.llvm.org/D105320
137 lines
7.3 KiB
LLVM
137 lines
7.3 KiB
LLVM
; RUN: llc < %s | FileCheck %s --check-prefix=ASM
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; // C++ source to regenerate:
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; enum class uns : __uint128_t { unsval = __uint128_t(1) << 64 };
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; uns t1() { return uns::unsval; }
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; enum class sig : __int128 { sigval = -(__int128(1) << 64) };
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; sig t2() { return sig::sigval; }
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; struct test {
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; static const __uint128_t u128 = __uint128_t(1) << 64;
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; static const __int128 s128 = -(__int128(1) << 64);
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; };
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; test t3() { return test(); }
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;
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; $ clang a.cpp -S -emit-llvm -g -gcodeview
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; ------------------------------------------------------------------------------
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; ASM-LABEL: .long 241 # Symbol subsection for globals
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;
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; ASM-LABEL: .short 4359 # Record kind: S_CONSTANT
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; ASM-NEXT: .long 4110 # Type
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; ASM-NEXT: .byte 0x0a, 0x80, 0xff, 0xff # Value
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; ASM-NEXT: .byte 0xff, 0xff, 0xff, 0xff
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; ASM-NEXT: .byte 0xff, 0xff
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; ASM-NEXT: .asciz "test::u128" # Name
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; ASM-NEXT: .p2align 2
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;
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; ASM-LABEL: .short 4359 # Record kind: S_CONSTANT
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; ASM-NEXT: .long 4111 # Type
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; ASM-NEXT: .byte 0x09, 0x80, 0x00, 0x00 # Value
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; ASM-NEXT: .byte 0x00, 0x00, 0x00, 0x00
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; ASM-NEXT: .byte 0x00, 0x80
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; ASM-NEXT: .asciz "test::s128" # Name
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; ASM-NEXT: .p2align 2
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;
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; ASM-LABEL: .short 0x1203 # Record kind: LF_FIELDLIST
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; ASM-NEXT: .short 0x1502 # Member kind: Enumerator ( LF_ENUMERATE )
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; ASM-NEXT: .short 0x3 # Attrs: Public
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; ASM-NEXT: .short 0x800a
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; ASM-NEXT: .quad 0xffffffffffffffff # EnumValue
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; ASM-NEXT: .asciz "unsval" # Name
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;
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; ASM-LABEL: .short 0x1203 # Record kind: LF_FIELDLIST
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; ASM-NEXT: .short 0x1502 # Member kind: Enumerator ( LF_ENUMERATE )
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; ASM-NEXT: .short 0x3 # Attrs: Public
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; ASM-NEXT: .short 0x800a
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; ASM-NEXT: .quad 0xffffffffffffffff # EnumValue
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; ASM-NEXT: .asciz "sigval" # Name
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; ------------------------------------------------------------------------------
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; ModuleID = 'a.cpp'
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source_filename = "a.cpp"
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target datalayout = "e-m:w-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-windows-gnu"
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%struct.test = type { i8 }
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; Function Attrs: mustprogress noinline nounwind optnone
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define dso_local <2 x i64> @_Z2t1v() #0 !dbg !23 {
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entry:
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%retval = alloca i128, align 16
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store i128 18446744073709551616, i128* %retval, align 16, !dbg !27
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%0 = bitcast i128* %retval to <2 x i64>*, !dbg !27
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%1 = load <2 x i64>, <2 x i64>* %0, align 16, !dbg !27
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ret <2 x i64> %1, !dbg !27
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}
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; Function Attrs: mustprogress noinline nounwind optnone
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define dso_local <2 x i64> @_Z2t2v() #0 !dbg !28 {
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entry:
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%retval = alloca i128, align 16
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store i128 -18446744073709551616, i128* %retval, align 16, !dbg !31
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%0 = bitcast i128* %retval to <2 x i64>*, !dbg !31
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%1 = load <2 x i64>, <2 x i64>* %0, align 16, !dbg !31
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ret <2 x i64> %1, !dbg !31
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}
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; Function Attrs: mustprogress noinline nounwind optnone
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define dso_local i8 @_Z2t3v() #1 !dbg !32 {
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entry:
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%retval = alloca %struct.test, align 1
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%coerce.dive = getelementptr inbounds %struct.test, %struct.test* %retval, i32 0, i32 0, !dbg !41
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%0 = load i8, i8* %coerce.dive, align 1, !dbg !41
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ret i8 %0, !dbg !41
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}
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attributes #0 = { mustprogress noinline nounwind optnone "frame-pointer"="none" "min-legal-vector-width"="128" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+cx8,+mmx,+sse,+sse2,+x87" }
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attributes #1 = { mustprogress noinline nounwind optnone "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+cx8,+mmx,+sse,+sse2,+x87" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!19, !20, !21}
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!llvm.ident = !{!22}
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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, globals: !14, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "a.cpp", directory: ".", checksumkind: CSK_MD5, checksum: "b37f4034fd610917975e9c5ff097fa6b")
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!2 = !{!3, !10}
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!3 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "uns", file: !4, line: 4, baseType: !5, size: 128, flags: DIFlagEnumClass, elements: !8, identifier: "_ZTS3uns")
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!4 = !DIFile(filename: "a.cpp", directory: ".", checksumkind: CSK_MD5, checksum: "b37f4034fd610917975e9c5ff097fa6b")
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!5 = !DIDerivedType(tag: DW_TAG_typedef, name: "__uint128_t", file: !6, baseType: !7)
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!6 = !DIFile(filename: "a.cpp", directory: ".")
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!7 = !DIBasicType(name: "unsigned __int128", size: 128, encoding: DW_ATE_unsigned)
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!8 = !{!9}
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!9 = !DIEnumerator(name: "unsval", value: 18446744073709551616, isUnsigned: true)
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!10 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "sig", file: !4, line: 7, baseType: !11, size: 128, flags: DIFlagEnumClass, elements: !12, identifier: "_ZTS3sig")
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!11 = !DIBasicType(name: "__int128", size: 128, encoding: DW_ATE_signed)
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!12 = !{!13}
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!13 = !DIEnumerator(name: "sigval", value: -18446744073709551616)
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!14 = !{!15, !17}
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!15 = !DIGlobalVariableExpression(var: !16, expr: !DIExpression())
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!16 = distinct !DIGlobalVariable(name: "unsval", scope: !0, file: !4, line: 4, type: !3, isLocal: true, isDefinition: true)
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!17 = !DIGlobalVariableExpression(var: !18, expr: !DIExpression())
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!18 = distinct !DIGlobalVariable(name: "sigval", scope: !0, file: !4, line: 7, type: !10, isLocal: true, isDefinition: true)
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!19 = !{i32 2, !"CodeView", i32 1}
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!20 = !{i32 2, !"Debug Info Version", i32 3}
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!21 = !{i32 1, !"wchar_size", i32 2}
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!22 = !{!"clang version 13.0.0"}
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!23 = distinct !DISubprogram(name: "t1", linkageName: "_Z2t1v", scope: !4, file: !4, line: 5, type: !24, scopeLine: 5, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !26)
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!24 = !DISubroutineType(types: !25)
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!25 = !{!3}
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!26 = !{}
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!27 = !DILocation(line: 5, column: 12, scope: !23)
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!28 = distinct !DISubprogram(name: "t2", linkageName: "_Z2t2v", scope: !4, file: !4, line: 8, type: !29, scopeLine: 8, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !26)
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!29 = !DISubroutineType(types: !30)
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!30 = !{!10}
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!31 = !DILocation(line: 8, column: 12, scope: !28)
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!32 = distinct !DISubprogram(name: "t3", linkageName: "_Z2t3v", scope: !4, file: !4, line: 14, type: !33, scopeLine: 14, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !26)
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!33 = !DISubroutineType(types: !34)
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!34 = !{!35}
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!35 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "test", file: !4, line: 10, size: 8, flags: DIFlagTypePassByValue, elements: !36, identifier: "_ZTS4test")
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!36 = !{!37, !39}
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!37 = !DIDerivedType(tag: DW_TAG_member, name: "u128", scope: !35, file: !4, line: 11, baseType: !38, flags: DIFlagStaticMember, extraData: i128 18446744073709551616)
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!38 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !5)
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!39 = !DIDerivedType(tag: DW_TAG_member, name: "s128", scope: !35, file: !4, line: 12, baseType: !40, flags: DIFlagStaticMember, extraData: i128 -18446744073709551616)
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!40 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !11)
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!41 = !DILocation(line: 14, column: 13, scope: !32)
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