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llvm-mirror/test/CodeGen/X86/fp128-g.ll
Shiva Chen a2029fa58e [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 
In order to set breakpoints on labels and list source code around
labels, we need collect debug information for labels, i.e., label
name, the function label belong, line number in the file, and the
address label located. In order to keep these information in LLVM
IR and to allow backend to generate debug information correctly.
We create a new kind of metadata for labels, DILabel. The format
of DILabel is

!DILabel(scope: !1, name: "foo", file: !2, line: 3)

We hope to keep debug information as much as possible even the
code is optimized. So, we create a new kind of intrinsic for label
metadata to avoid the metadata is eliminated with basic block.
The intrinsic will keep existing if we keep it from optimized out.
The format of the intrinsic is

llvm.dbg.label(metadata !1)

It has only one argument, that is the DILabel metadata. The
intrinsic will follow the label immediately. Backend could get the
label metadata through the intrinsic's parameter.

We also create DIBuilder API for labels to be used by Frontend.
Frontend could use createLabel() to allocate DILabel objects, and use
insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR.

Differential Revision: https://reviews.llvm.org/D45024

Patch by Hsiangkai Wang.

llvm-svn: 331841
2018-05-09 02:40:45 +00:00

182 lines
8.7 KiB
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; RUN: llc < %s -O2 -mtriple=x86_64-linux-android -mattr=+mmx \
; RUN: -enable-legalize-types-checking | FileCheck %s --check-prefix=X64
;
; These cases check if x86_64-linux-android works with -O2 -g,
; especially CSE matching needed by SoftenFloatRes_LOAD.
; Multiple common load patterns are included to have better coverage.
; When CSE matching fails, SoftenFloatResult and SoftenFloatRes_LOAD
; can be called in an infinite loop.
; ModuleID = 'fp128-g.c'
source_filename = "fp128-g.c"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64--linux-android"
@ld_ptr = common local_unnamed_addr global fp128* null, align 8, !dbg !0
; Function Attrs: nounwind readonly uwtable
define fp128 @test_return1(fp128* nocapture readonly %ptr) local_unnamed_addr #0 !dbg !12 {
entry:
tail call void @llvm.dbg.value(metadata fp128* %ptr, i64 0, metadata !16, metadata !17), !dbg !18
%0 = load fp128, fp128* %ptr, align 16, !dbg !19, !tbaa !20
ret fp128 %0, !dbg !24
; X64-LABEL: test_return1:
; X64: .loc
; X64: movaps (%rdi), %xmm0
; X64: .loc
; X64: retq
}
; Function Attrs: nounwind readonly uwtable
define fp128 @test_return2(fp128* nocapture readonly %ptr) local_unnamed_addr #0 !dbg !25 {
entry:
tail call void @llvm.dbg.value(metadata fp128* %ptr, i64 0, metadata !27, metadata !17), !dbg !29
%0 = load fp128, fp128* %ptr, align 16, !dbg !30, !tbaa !20
tail call void @llvm.dbg.value(metadata fp128 %0, i64 0, metadata !28, metadata !17), !dbg !31
ret fp128 %0, !dbg !32
}
; X64-LABEL: test_return2:
; X64: .loc
; X64: movaps (%rdi), %xmm0
; X64: .loc
; X64: retq
; Function Attrs: nounwind readonly uwtable
define fp128 @test_return3(fp128* nocapture readonly %ptr) local_unnamed_addr #0 !dbg !33 {
entry:
tail call void @llvm.dbg.value(metadata fp128* %ptr, i64 0, metadata !35, metadata !17), !dbg !36
%0 = load fp128, fp128* %ptr, align 16, !dbg !37, !tbaa !20
%add = fadd fp128 %0, %0, !dbg !38
ret fp128 %add, !dbg !39
; X64-LABEL: test_return3:
; X64: .loc
; X64: movaps (%rdi), %xmm0
; X64: .loc
; X64: movaps %xmm0, %xmm1
; X64: callq __addtf3
; X64: .loc
; X64: retq
}
; Function Attrs: norecurse nounwind readonly uwtable
define fp128 @test_return4() local_unnamed_addr #1 !dbg !40 {
entry:
%0 = load fp128*, fp128** @ld_ptr, align 8, !dbg !43, !tbaa !44
%1 = load fp128, fp128* %0, align 16, !dbg !46, !tbaa !20
ret fp128 %1, !dbg !47
; X64-LABEL: test_return4:
; X64: .loc
; X64: movq ld_ptr(%rip), %rax
; X64: .loc
; X64: movaps (%rax), %xmm0
; X64: .loc
; X64: retq
}
; Function Attrs: nounwind readonly uwtable
define fp128 @test_return5() local_unnamed_addr #0 !dbg !48 {
entry:
%0 = load fp128*, fp128** @ld_ptr, align 8, !dbg !51, !tbaa !44
%1 = load fp128, fp128* %0, align 16, !dbg !52, !tbaa !20
tail call void @llvm.dbg.value(metadata fp128 %1, i64 0, metadata !50, metadata !17), !dbg !53
ret fp128 %1, !dbg !54
; X64-LABEL: test_return5:
; X64: .loc
; X64: movq ld_ptr(%rip), %rax
; X64: .loc
; X64: movaps (%rax), %xmm0
; X64: .loc
; X64: retq
}
; Function Attrs: norecurse nounwind readonly uwtable
define fp128 @test_return6() local_unnamed_addr #1 !dbg !55 {
entry:
%0 = load fp128*, fp128** @ld_ptr, align 8, !dbg !56, !tbaa !44
%1 = load fp128, fp128* %0, align 16, !dbg !57, !tbaa !20
%add = fadd fp128 %1, %1, !dbg !58
ret fp128 %add, !dbg !59
; X64-LABEL: test_return6:
; X64: .loc
; X64: movaps (%rax), %xmm0
; X64: .loc
; X64: movaps %xmm0, %xmm1
; X64: callq __addtf3
; X64: .loc
; X64: retq
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
attributes #0 = { nounwind readonly uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { norecurse nounwind readonly uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind readnone }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!8, !9, !10}
!llvm.ident = !{!11}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = !DIGlobalVariable(name: "ld_ptr", scope: !2, file: !3, line: 17, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 4.0.0 (trunk 281495)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "fp128-g.c", directory: "/disk5/chh/Debug/ld.loop")
!4 = !{}
!5 = !{!0}
!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64, align: 64)
!7 = !DIBasicType(name: "long double", size: 128, align: 128, encoding: DW_ATE_float)
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"PIC Level", i32 2}
!11 = !{!"clang version 4.0.0 (trunk 281495)"}
!12 = distinct !DISubprogram(name: "test_return1", scope: !3, file: !3, line: 3, type: !13, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !15)
!13 = !DISubroutineType(types: !14)
!14 = !{!7, !6}
!15 = !{!16}
!16 = !DILocalVariable(name: "ptr", arg: 1, scope: !12, file: !3, line: 3, type: !6)
!17 = !DIExpression()
!18 = !DILocation(line: 3, column: 39, scope: !12)
!19 = !DILocation(line: 4, column: 12, scope: !12)
!20 = !{!21, !21, i64 0}
!21 = !{!"long double", !22, i64 0}
!22 = !{!"omnipotent char", !23, i64 0}
!23 = !{!"Simple C/C++ TBAA"}
!24 = !DILocation(line: 4, column: 5, scope: !12)
!25 = distinct !DISubprogram(name: "test_return2", scope: !3, file: !3, line: 7, type: !13, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !26)
!26 = !{!27, !28}
!27 = !DILocalVariable(name: "ptr", arg: 1, scope: !25, file: !3, line: 7, type: !6)
!28 = !DILocalVariable(name: "value", scope: !25, file: !3, line: 8, type: !7)
!29 = !DILocation(line: 7, column: 39, scope: !25)
!30 = !DILocation(line: 9, column: 14, scope: !25)
!31 = !DILocation(line: 8, column: 17, scope: !25)
!32 = !DILocation(line: 10, column: 5, scope: !25)
!33 = distinct !DISubprogram(name: "test_return3", scope: !3, file: !3, line: 13, type: !13, isLocal: false, isDefinition: true, scopeLine: 13, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !34)
!34 = !{!35}
!35 = !DILocalVariable(name: "ptr", arg: 1, scope: !33, file: !3, line: 13, type: !6)
!36 = !DILocation(line: 13, column: 39, scope: !33)
!37 = !DILocation(line: 14, column: 12, scope: !33)
!38 = !DILocation(line: 14, column: 17, scope: !33)
!39 = !DILocation(line: 14, column: 5, scope: !33)
!40 = distinct !DISubprogram(name: "test_return4", scope: !3, file: !3, line: 18, type: !41, isLocal: false, isDefinition: true, scopeLine: 18, isOptimized: true, unit: !2, retainedNodes: !4)
!41 = !DISubroutineType(types: !42)
!42 = !{!7}
!43 = !DILocation(line: 19, column: 13, scope: !40)
!44 = !{!45, !45, i64 0}
!45 = !{!"any pointer", !22, i64 0}
!46 = !DILocation(line: 19, column: 12, scope: !40)
!47 = !DILocation(line: 19, column: 5, scope: !40)
!48 = distinct !DISubprogram(name: "test_return5", scope: !3, file: !3, line: 22, type: !41, isLocal: false, isDefinition: true, scopeLine: 22, isOptimized: true, unit: !2, retainedNodes: !49)
!49 = !{!50}
!50 = !DILocalVariable(name: "value", scope: !48, file: !3, line: 23, type: !7)
!51 = !DILocation(line: 23, column: 26, scope: !48)
!52 = !DILocation(line: 23, column: 25, scope: !48)
!53 = !DILocation(line: 23, column: 17, scope: !48)
!54 = !DILocation(line: 24, column: 5, scope: !48)
!55 = distinct !DISubprogram(name: "test_return6", scope: !3, file: !3, line: 27, type: !41, isLocal: false, isDefinition: true, scopeLine: 27, isOptimized: true, unit: !2, retainedNodes: !4)
!56 = !DILocation(line: 28, column: 13, scope: !55)
!57 = !DILocation(line: 28, column: 12, scope: !55)
!58 = !DILocation(line: 28, column: 20, scope: !55)
!59 = !DILocation(line: 28, column: 5, scope: !55)
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