hvdijk wrote:
> Seems reasonable. Do you mind pasting the output of this for a fairly simple
> shader here? It's hard to see how this is going to look from the tests alone.
After the update to account for #197478 (which added additional information to
DebugInfoMap), for `llvm/test/CodeGen/DirectX/debug-info.ll` which contains a
simple (bad) FMA implementation, the output of `llc --filetype=asm
<debug-info.ll` is
```llvm
;
; Resource Bindings:
;
; Name Type Format Dim ID
HLSL Bind Count
; ------------------------------ ---------- ------- ----------- -------
-------------- ---------
;
; ModuleID = '<stdin>'
source_filename = "<stdin>"
target datalayout =
"e-m:e-ve-p:32:32-i1:32-i8:8-i16:16-i32:32-i64:64-f16:16-f32:32-f64:64-n8:16:32:64"
target triple = "dxil-unknown-shadermodel6.7-library"
; Function Attrs: nounwind memory(none)
define dso_local float @fma(float %0, float %1, float %2) local_unnamed_addr #0
!dbg !9 {
; DXIL: to be replaced with: tail call addrspace(0) void
@llvm.dbg.value(metadata float %0, i64 0, metadata !14, metadata
!DIExpression()), !dbg !17
tail call void @llvm.dbg.value(metadata float %0, metadata !14, metadata
!DIExpression()), !dbg !17
; DXIL: to be replaced with: tail call addrspace(0) void
@llvm.dbg.value(metadata float %1, i64 0, metadata !15, metadata
!DIExpression()), !dbg !17
tail call void @llvm.dbg.value(metadata float %1, metadata !15, metadata
!DIExpression()), !dbg !17
; DXIL: to be replaced with: tail call addrspace(0) void
@llvm.dbg.value(metadata float %2, i64 0, metadata !16, metadata
!DIExpression()), !dbg !17
tail call void @llvm.dbg.value(metadata float %2, metadata !16, metadata
!DIExpression()), !dbg !17
%4 = fmul float %0, %1, !dbg !18
%5 = fadd float %4, %2, !dbg !19
ret float %5, !dbg !20
}
; Function Attrs: nounwind memory(none)
declare void @llvm.dbg.value(metadata, metadata, metadata) #0
attributes #0 = { nounwind memory(none) }
!llvm.dbg.cu = !{!0}
!llvm.ident = !{!3}
!dx.shaderModel = !{!4}
!dx.version = !{!5}
!dx.entryPoints = !{!6}
!llvm.module.flags = !{!7, !8}
; DXIL: !0: additional data: !21
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized:
true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2,
splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "in.c", directory: "dir")
!2 = !{}
!3 = !{!"Some Compiler"}
!4 = !{!"lib", i32 6, i32 7}
!5 = !{i32 1, i32 7}
!6 = !{null, !"", null, null, null}
!7 = !{i32 2, !"Dwarf Version", i32 2}
!8 = !{i32 2, !"Debug Info Version", i32 3}
; DXIL: !9: to be replaced by: !22
!9 = distinct !DISubprogram(name: "fma", scope: !1, file: !1, line: 1, type:
!10, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition |
DISPFlagOptimized, unit: !0, retainedNodes: !13)
!10 = !DISubroutineType(types: !11)
!11 = !{!12, !12, !12, !12}
!12 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
!13 = !{!14, !15, !16}
!14 = !DILocalVariable(name: "x", arg: 1, scope: !9, file: !1, line: 1, type:
!12)
!15 = !DILocalVariable(name: "y", arg: 2, scope: !9, file: !1, line: 1, type:
!12)
!16 = !DILocalVariable(name: "z", arg: 3, scope: !9, file: !1, line: 1, type:
!12)
!17 = !DILocation(line: 0, scope: !9)
!18 = !DILocation(line: 2, column: 12, scope: !9)
!19 = !DILocation(line: 2, column: 16, scope: !9)
!20 = !DILocation(line: 2, column: 3, scope: !9)
!21 = !{!9}
; DXIL: !22: additional data: ptr @fma
!22 = !DISubprogram(name: "fma", scope: !1, file: !1, line: 1, type: !10,
scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition |
DISPFlagOptimized, unit: !0, retainedNodes: !13)
```
https://github.com/llvm/llvm-project/pull/198318
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