42635856ed
The layout of the stack frame for SVE means that using the frame pointer rather than the stack pointer for an access to an SVE stack object removes the need for an additional add to jump over the non-SVE objects. Likewise the opposite is true for non-SVE stack objects. This patch allows for the former to be done by having HasFP return true in the presence of both SVE and non-SVE stack objects, and also fixes a minor issue whereby the later would not be done for certain offsets.
128 lines
6.0 KiB
YAML
128 lines
6.0 KiB
YAML
# RUN: llc -o %t -filetype=obj -start-before=prologepilog %s
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# RUN: llvm-dwarfdump --name="value0" %t | FileCheck %s --check-prefix=CHECK0
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# RUN: llvm-dwarfdump --name="value1" %t | FileCheck %s --check-prefix=CHECK1
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# RUN: llvm-dwarfdump --name="value2" %t | FileCheck %s --check-prefix=CHECK2
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# RUN: llvm-dwarfdump --name="value3" %t | FileCheck %s --check-prefix=CHECK3
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# RUN: llvm-dwarfdump --name="value4" %t | FileCheck %s --check-prefix=CHECK4
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# RUN: llvm-dwarfdump --name="value5" %t | FileCheck %s --check-prefix=CHECK5
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# CHECK0: : DW_OP_breg31 WSP+8, DW_OP_lit16, DW_OP_plus)
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# CHECK0: DW_AT_type {{.*}}ty32
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#
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# CHECK1: : DW_OP_breg31 WSP+16)
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# CHECK1: DW_AT_type {{.*}}ty32
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#
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# CHECK2: : DW_OP_breg29 W29+0, DW_OP_lit8, DW_OP_bregx VG+0, DW_OP_mul, DW_OP_minus)
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# CHECK2: DW_AT_type {{.*}}svint32_t
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#
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# CHECK3: : DW_OP_breg29 W29+0, DW_OP_lit16, DW_OP_bregx VG+0, DW_OP_mul, DW_OP_minus)
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# CHECK3: DW_AT_type {{.*}}svint32_t
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#
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# CHECK4: : DW_OP_breg29 W29+0, DW_OP_lit17, DW_OP_bregx VG+0, DW_OP_mul, DW_OP_minus)
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# CHECK4: DW_AT_type {{.*}}svbool_t
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#
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# CHECK5: : DW_OP_breg29 W29+0, DW_OP_lit18, DW_OP_bregx VG+0, DW_OP_mul, DW_OP_minus)
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# CHECK5: DW_AT_type {{.*}}svbool_t
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--- |
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; ModuleID = 'bla.mir'
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source_filename = "bla.mir"
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target triple = "aarch64-unknown-linux-gnu"
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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define void @foo() #0 !dbg !5 {
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entry:
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unreachable, !dbg !8
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}
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; Function Attrs: nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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attributes #0 = { "target-features"="+sve" }
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!llvm.dbg.cu = !{!0}
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!llvm.debugify = !{!3, !3}
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!llvm.module.flags = !{!4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "bla.mir", directory: "/")
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!2 = !{}
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!3 = !{i32 1}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !9)
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!6 = !DISubroutineType(types: !2)
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!7 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_signed)
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!8 = !DILocation(line: 1, column: 1, scope: !5)
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!9 = !{!10, !11, !12, !13, !14, !15}
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!10 = !DILocalVariable(name: "value0", scope: !5, file: !1, line: 1, type: !7)
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!11 = !DILocalVariable(name: "value1", scope: !5, file: !1, line: 1, type: !7)
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!12 = !DILocalVariable(name: "value2", scope: !5, file: !1, line: 1, type: !16)
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!13 = !DILocalVariable(name: "value3", scope: !5, file: !1, line: 1, type: !16)
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!14 = !DILocalVariable(name: "value4", scope: !5, file: !1, line: 1, type: !21)
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!15 = !DILocalVariable(name: "value5", scope: !5, file: !1, line: 1, type: !21)
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!16 = !DIDerivedType(tag: DW_TAG_typedef, name: "svint32_t", file: !1, line: 1, baseType: !17)
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!17 = !DIDerivedType(tag: DW_TAG_typedef, name: "__SVInt32_t", file: !1, baseType: !18)
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!18 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, flags: DIFlagVector, elements: !19)
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!19 = !{!20}
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!20 = !DISubrange(lowerBound: 0, upperBound: !DIExpression(DW_OP_constu, 2, DW_OP_bregx, 46, 0, DW_OP_mul, DW_OP_constu, 1, DW_OP_minus))
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!21 = !DIDerivedType(tag: DW_TAG_typedef, name: "svbool_t", file: !1, line: 90, baseType: !22)
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!22 = !DIDerivedType(tag: DW_TAG_typedef, name: "__SVBool_t", file: !1, baseType: !23)
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!23 = !DICompositeType(tag: DW_TAG_array_type, baseType: !24, flags: DIFlagVector, elements: !25)
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!24 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
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!25 = !{!26}
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!26 = !DISubrange(lowerBound: 0, upperBound: !DIExpression(DW_OP_constu, 1, DW_OP_bregx, 46, 0, DW_OP_mul, DW_OP_constu, 1, DW_OP_minus))
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...
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---
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name: foo
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alignment: 4
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tracksRegLiveness: true
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liveins:
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- { reg: '$z0' }
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- { reg: '$z1' }
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- { reg: '$p0' }
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- { reg: '$p1' }
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- { reg: '$x0' }
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- { reg: '$x1' }
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frameInfo:
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maxAlignment: 16
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adjustsStack: true
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hasCalls: true
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maxCallFrameSize: 0
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localFrameSize: 4
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stack:
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- { id: 0, size: 8, alignment: 8 }
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- { id: 1, size: 8, alignment: 8 }
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- { id: 2, size: 16, alignment: 16, stack-id: scalable-vector }
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- { id: 3, size: 16, alignment: 16, stack-id: scalable-vector }
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- { id: 4, size: 2, alignment: 2, stack-id: scalable-vector }
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- { id: 5, size: 2, alignment: 2, stack-id: scalable-vector }
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machineFunctionInfo: {}
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body: |
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bb.0.entry:
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liveins: $p0, $p1, $w0, $x1, $z0, $z1
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; Avoid stack slot scavenging.
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$lr = IMPLICIT_DEF
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STRXui killed renamable $x0, %stack.0, 0, debug-location !8
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DBG_VALUE %stack.0, $noreg, !10, !DIExpression(DW_OP_constu, 16, DW_OP_plus, DW_OP_deref), debug-location !8
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STRXui killed renamable $x1, %stack.1, 0, debug-location !8
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DBG_VALUE %stack.1, $noreg, !11, !DIExpression(DW_OP_constu, 16, DW_OP_plus, DW_OP_deref), debug-location !8
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renamable $p2 = PTRUE_S 31, debug-location !DILocation(line: 4, column: 1, scope: !5)
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ST1W_IMM renamable $z0, renamable $p2, %stack.2, 0, debug-location !DILocation(line: 5, column: 1, scope: !5)
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DBG_VALUE %stack.2, $noreg, !12, !DIExpression(DW_OP_deref), debug-location !DILocation(line: 5, column: 1, scope: !5)
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ST1W_IMM renamable $z1, killed renamable $p2, %stack.3, 0, debug-location !DILocation(line: 6, column: 1, scope: !5)
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DBG_VALUE %stack.3, $noreg, !13, !DIExpression(DW_OP_deref), debug-location !DILocation(line: 6, column: 1, scope: !5)
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STR_PXI killed renamable $p0, %stack.4, 0, debug-location !DILocation(line: 2, column: 1, scope: !5)
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DBG_VALUE %stack.4, $noreg, !14, !DIExpression(DW_OP_deref), debug-location !DILocation(line: 2, column: 1, scope: !5)
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STR_PXI killed renamable $p1, %stack.5, 0, debug-location !DILocation(line: 3, column: 1, scope: !5)
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DBG_VALUE %stack.5, $noreg, !15, !DIExpression(DW_OP_deref), debug-location !DILocation(line: 3, column: 1, scope: !5)
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RET_ReallyLR implicit $z0, implicit $z1, debug-location !DILocation(line: 7, column: 1, scope: !5)
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...
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