115 lines
4.6 KiB
LLVM
115 lines
4.6 KiB
LLVM
; RUN: llc -o - %s | FileCheck %s
|
|
; RUN: llc -filetype=obj -o - %s | llvm-dwarfdump -v - | FileCheck %s --check-prefix=DWARF
|
|
; This test checks that parameters on the stack pointer are correctly
|
|
; referenced by debug info.
|
|
target triple = "x86_64--"
|
|
|
|
@glob = external global i64
|
|
@ptr = external global i32*
|
|
%struct.s = type { i32, i32, i32, i32, i32 }
|
|
|
|
; Simple case: no FP, use offset from RSP.
|
|
|
|
; CHECK-LABEL: f0:
|
|
; CHECK-NOT: pushq
|
|
; CHECK: movl $42, %eax
|
|
; CHECK: retq
|
|
define i32 @f0(%struct.s* byval(%struct.s) align 8 %input) !dbg !8 {
|
|
call void @llvm.dbg.declare(metadata %struct.s* %input, metadata !4, metadata !17), !dbg !18
|
|
ret i32 42, !dbg !18
|
|
}
|
|
|
|
; DWARF-LABEL: .debug_info contents:
|
|
|
|
; DWARF-LABEL: DW_TAG_subprogram
|
|
; DWARF: DW_AT_frame_base [DW_FORM_exprloc] (DW_OP_reg7 RSP)
|
|
; DWARF: DW_AT_name [DW_FORM_strp] ( {{.*}}"f0")
|
|
; DWARF: DW_TAG_formal_parameter
|
|
; DWARF-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_fbreg +8)
|
|
; DWARF-NEXT: DW_AT_name [DW_FORM_strp] ( {{.*}}"input")
|
|
|
|
|
|
; Dynamic alloca forces the use of RBP as the base pointer
|
|
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: pushq %rbp
|
|
; CHECK: movl $42, %eax
|
|
; CHECK: popq %rbp
|
|
; CHECK: retq
|
|
define i32 @f1(%struct.s* byval(%struct.s) align 8 %input) !dbg !19 {
|
|
%val = load i64, i64* @glob
|
|
; this alloca should force FP usage.
|
|
%stackspace = alloca i32, i64 %val, align 1
|
|
store i32* %stackspace, i32** @ptr
|
|
call void @llvm.dbg.declare(metadata %struct.s* %input, metadata !20, metadata !17), !dbg !21
|
|
ret i32 42, !dbg !21
|
|
}
|
|
|
|
; DWARF-LABEL: DW_TAG_subprogram
|
|
; DWARF: DW_AT_frame_base [DW_FORM_exprloc] (DW_OP_reg6 RBP)
|
|
; DWARF: DW_AT_name [DW_FORM_strp] ( {{.*}}"f1")
|
|
; DWARF: DW_TAG_formal_parameter
|
|
; DWARF-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_fbreg +16)
|
|
; DWARF-NEXT: DW_AT_name [DW_FORM_strp] ( {{.*}}"input")
|
|
|
|
; CHECK-LABEL: f2:
|
|
; Just check that we are indeed aligning the stack and setting up a base pointer
|
|
; in RBX.
|
|
; CHECK: pushq %rbp
|
|
; CHECK: movq %rsp, %rbp
|
|
; CHECK: pushq %rbx
|
|
; CHECK: andq $-64, %rsp
|
|
; CHECK: subq $64, %rsp
|
|
; CHECK: movq %rsp, %rbx
|
|
define i32 @f2(%struct.s* byval(%struct.s) align 8 %input) !dbg !22 {
|
|
%val = load i64, i64* @glob
|
|
%stackspace = alloca i32, i64 %val, align 64
|
|
store i32* %stackspace, i32** @ptr
|
|
call void @llvm.dbg.declare(metadata %struct.s* %input, metadata !23, metadata !17), !dbg !24
|
|
ret i32 42, !dbg !24
|
|
}
|
|
|
|
; "input" should still be referred to through RBP.
|
|
; DWARF-LABEL: DW_TAG_subprogram
|
|
; DWARF: DW_AT_frame_base [DW_FORM_exprloc] (DW_OP_reg6 RBP)
|
|
; DWARF: DW_AT_name [DW_FORM_strp] ( {{.*}}"f2")
|
|
; DWARF: DW_TAG_formal_parameter
|
|
; DWARF-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_fbreg +16)
|
|
; DWARF-NEXT: DW_AT_name [DW_FORM_strp] ( {{.*}}"input")
|
|
|
|
declare void @llvm.dbg.declare(metadata, metadata, metadata)
|
|
|
|
!llvm.dbg.cu = !{!2}
|
|
!llvm.module.flags = !{!0, !1}
|
|
|
|
!0 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!1 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, emissionKind: FullDebug)
|
|
!3 = !DIFile(filename: "dbg-baseptr.ll", directory: "/")
|
|
!4 = !DILocalVariable(name: "input", arg: 1, scope: !8, file: !3, line: 5, type: !9)
|
|
!5 = !{}
|
|
|
|
!6 = !DISubroutineType(types: !7)
|
|
!7 = !{!10, !9}
|
|
|
|
!8 = distinct !DISubprogram(name: "f0", file: !3, line: 5, type: !6, isLocal: false, isDefinition: true, unit: !2, retainedNodes: !5)
|
|
|
|
!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s", elements: !11)
|
|
!10 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
|
|
!11 = !{!12, !13, !14, !15, !16}
|
|
!12 = !DIDerivedType(tag: DW_TAG_member, name: "a", baseType: !10, size: 32)
|
|
!13 = !DIDerivedType(tag: DW_TAG_member, name: "b", baseType: !10, size: 32, offset: 32)
|
|
!14 = !DIDerivedType(tag: DW_TAG_member, name: "c", baseType: !10, size: 32, offset: 64)
|
|
!15 = !DIDerivedType(tag: DW_TAG_member, name: "d", baseType: !10, size: 32, offset: 96)
|
|
!16 = !DIDerivedType(tag: DW_TAG_member, name: "e", baseType: !10, size: 32, offset: 128)
|
|
|
|
!17 = !DIExpression()
|
|
!18 = !DILocation(line: 5, scope: !8)
|
|
|
|
!19 = distinct !DISubprogram(name: "f1", file: !3, line: 5, type: !6, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, unit: !2, retainedNodes: !5)
|
|
!20 = !DILocalVariable(name: "input", arg: 1, scope: !19, file: !3, line: 5, type: !9)
|
|
!21 = !DILocation(line: 5, scope: !19)
|
|
!22 = distinct !DISubprogram(name: "f2", file: !3, line: 5, type: !6, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, unit: !2, retainedNodes: !5)
|
|
!23 = !DILocalVariable(name: "input", arg: 1, scope: !22, file: !3, line: 5, type: !9)
|
|
!24 = !DILocation(line: 5, scope: !22)
|