derek.holloway
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67 lines
2.7 KiB
YAML
67 lines
2.7 KiB
YAML
# RUN: llc -emit-call-site-info -start-before=livedebugvalues -filetype=obj -o - %s \
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# RUN: | llvm-dwarfdump - | FileCheck %s --implicit-check-not=DW_TAG_GNU_call_site_parameter
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#
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# Test that we don't crash on complicated copies with avx registers. For
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# complex intrinsic code, LLVM will produce register copies to 128-bit
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# registers that (through writing to them) implicitly zero out the upper
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# bit of the 256 ymm register.
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#
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# However, this is now what call-site-info tracking expects to see, as
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# demonstrated in the MIR below -- a ymm argument to a function might be
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# implicit-def'd by such a copy, but without being the 'Destination'
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# register. For this non-trivial copy, test that we presently produce
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# no parameter location. We might be able to describe it in the future.
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#
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# CHECK: DW_TAG_GNU_call_site
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# CHECK-NEXT: DW_AT_abstract_origin
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--- |
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target datalayout = "e-m:e-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-linux-gnu"
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; Function Attrs: nounwind uwtable
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define void @foo() !dbg !12 {
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entry:
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ret void, !dbg !16
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}
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declare !dbg !4 void @call()
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9, !10}
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!llvm.ident = !{!11}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "clobber.c", directory: "/")
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!2 = !{}
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!3 = !{!4}
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!4 = !DISubprogram(name: "call", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{null, !7, !7}
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!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!8 = !{i32 7, !"Dwarf Version", i32 4}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{i32 1, !"wchar_size", i32 4}
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!11 = !{!"clang version 11.0.0"}
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!12 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !13, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!13 = !DISubroutineType(types: !14)
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!14 = !{null}
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!15 = !DILocation(line: 5, scope: !12)
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!16 = !DILocation(line: 6, scope: !12)
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...
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---
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name: foo
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callSites:
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- { bb: 0, offset: 1, fwdArgRegs:
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- { arg: 0, reg: '$ymm0' } }
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body: |
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bb.0.entry:
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liveins: $xmm1
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renamable $xmm0 = VMOVAPSrr renamable $xmm1, implicit-def $ymm0
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CALL64pcrel32 @call, csr_64, implicit $rsp, implicit $ssp, implicit killed $ymm0, implicit-def $rsp, implicit-def $ssp, debug-location !15
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RET64 debug-location !16
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...
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