RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-24 03:33:20 +01:00
Code Issues Projects Releases Wiki Activity
f22250fb3a
llvm-mirror/test/DebugInfo/X86/global-sra-fp80-struct.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

135 lines
6.3 KiB
LLVM
Raw Blame History

; RUN: opt -S -globalopt < %s | FileCheck %s
source_filename = "struct.c"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
%struct.mystruct = type { x86_fp80, i32, [12 x i8] }
; Generated from:
;
; static struct mystruct {
; long double a;
; int b;
; } static_struct;
; void __attribute__((nodebug)) foo(int in) { static_struct.a = in; }
; void __attribute__((nodebug)) bar(int in) { static_struct.b = in; }
; int main(int argc, char **argv)
; {
; foo(argv[0][1]);
; bar(argv[0][1]);
; return (static_struct.a + static_struct.b) > 0;
; }
;
; using clang -O0 -g2 -S -emit-llvm
@static_struct = internal global %struct.mystruct zeroinitializer, align 16, !dbg !0
; CHECK: @static_struct.0 = internal unnamed_addr global x86_fp80 0xK00000000000000000000, align 16, !dbg ![[EL0:.*]]
; CHECK: @static_struct.1 = internal unnamed_addr global i32 0, align 16, !dbg ![[EL1:.*]]
; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: !DIExpression(DW_OP_LLVM_fragment, 0, 128))
; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "static_struct"
; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: !DIExpression(DW_OP_LLVM_fragment, 128, 32))
; Function Attrs: noinline nounwind optnone uwtable
define void @foo(i32 %in) #0 {
entry:
%in.addr = alloca i32, align 4
store i32 %in, i32* %in.addr, align 4
%0 = load i32, i32* %in.addr, align 4
%conv = sitofp i32 %0 to x86_fp80
store x86_fp80 %conv, x86_fp80* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 16
ret void
}
; Function Attrs: noinline nounwind optnone uwtable
define void @bar(i32 %in) #0 {
entry:
%in.addr = alloca i32, align 4
store i32 %in, i32* %in.addr, align 4
%0 = load i32, i32* %in.addr, align 4
store i32 %0, i32* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 16
ret void
}
; Function Attrs: noinline nounwind optnone uwtable
define i32 @main(i32 %argc, i8** %argv) #0 !dbg !16 {
entry:
%retval = alloca i32, align 4
%argc.addr = alloca i32, align 4
%argv.addr = alloca i8**, align 8
store i32 0, i32* %retval, align 4
store i32 %argc, i32* %argc.addr, align 4
call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !22, metadata !DIExpression()), !dbg !23
store i8** %argv, i8*** %argv.addr, align 8
call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !24, metadata !DIExpression()), !dbg !25
%0 = load i8**, i8*** %argv.addr, align 8, !dbg !26
%arrayidx = getelementptr inbounds i8*, i8** %0, i64 0, !dbg !26
%1 = load i8*, i8** %arrayidx, align 8, !dbg !26
%arrayidx1 = getelementptr inbounds i8, i8* %1, i64 1, !dbg !26
%2 = load i8, i8* %arrayidx1, align 1, !dbg !26
%conv = sext i8 %2 to i32, !dbg !26
call void @foo(i32 %conv), !dbg !27
%3 = load i8**, i8*** %argv.addr, align 8, !dbg !28
%arrayidx2 = getelementptr inbounds i8*, i8** %3, i64 0, !dbg !28
%4 = load i8*, i8** %arrayidx2, align 8, !dbg !28
%arrayidx3 = getelementptr inbounds i8, i8* %4, i64 1, !dbg !28
%5 = load i8, i8* %arrayidx3, align 1, !dbg !28
%conv4 = sext i8 %5 to i32, !dbg !28
call void @bar(i32 %conv4), !dbg !29
%6 = load x86_fp80, x86_fp80* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 16, !dbg !30
%7 = load i32, i32* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 16, !dbg !31
%conv5 = sitofp i32 %7 to x86_fp80, !dbg !32
%add = fadd x86_fp80 %6, %conv5, !dbg !33
%cmp = fcmp ogt x86_fp80 %add, 0xK00000000000000000000, !dbg !34
%conv6 = zext i1 %cmp to i32, !dbg !34
ret i32 %conv6, !dbg !35
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
attributes #0 = { noinline nounwind optnone uwtable }
attributes #1 = { nounwind readnone speculatable }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!12, !13, !14}
!llvm.ident = !{!15}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "static_struct", scope: !2, file: !3, line: 4, type: !6, isLocal: true, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "struct.c", directory: "/")
!4 = !{}
!5 = !{!0}
!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "mystruct", file: !3, line: 1, size: 256, elements: !7)
!7 = !{!8, !10}
!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !3, line: 2, baseType: !9, size: 128)
!9 = !DIBasicType(name: "long double", size: 128, encoding: DW_ATE_float)
!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !3, line: 3, baseType: !11, size: 32, offset: 128)
!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!12 = !{i32 2, !"Dwarf Version", i32 4}
!13 = !{i32 2, !"Debug Info Version", i32 3}
!14 = !{i32 1, !"wchar_size", i32 4}
!15 = !{!"clang version 7.0.0"}
!16 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 7, type: !17, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4)
!17 = !DISubroutineType(types: !18)
!18 = !{!11, !11, !19}
!19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 64)
!20 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !21, size: 64)
!21 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
!22 = !DILocalVariable(name: "argc", arg: 1, scope: !16, file: !3, line: 7, type: !11)
!23 = !DILocation(line: 7, column: 14, scope: !16)
!24 = !DILocalVariable(name: "argv", arg: 2, scope: !16, file: !3, line: 7, type: !19)
!25 = !DILocation(line: 7, column: 27, scope: !16)
!26 = !DILocation(line: 9, column: 9, scope: !16)
!27 = !DILocation(line: 9, column: 5, scope: !16)
!28 = !DILocation(line: 10, column: 9, scope: !16)
!29 = !DILocation(line: 10, column: 5, scope: !16)
!30 = !DILocation(line: 11, column: 27, scope: !16)
!31 = !DILocation(line: 11, column: 45, scope: !16)
!32 = !DILocation(line: 11, column: 31, scope: !16)
!33 = !DILocation(line: 11, column: 29, scope: !16)
!34 = !DILocation(line: 11, column: 48, scope: !16)
!35 = !DILocation(line: 11, column: 5, scope: !16)
Reference in New Issue View Git Blame Copy Permalink