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Teach the stripNonLineTableDebugInfo pass about the llvm.dbg.addr intrinsic. 

This patch also strips llvm.dbg.addr intrinsics when downgrading debug
info to linetables-only.

Differential Revision: https://reviews.llvm.org/D77343
This commit is contained in:
Adrian Prantl 2020-04-02 16:05:45 -07:00
parent 8838d6d356
commit c024f3ebdc
2 changed files with 8 additions and 1 deletions
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1
llvm/lib/IR/DebugInfo.cpp
View File

@ -606,6 +606,7 @@ bool llvm::stripNonLineTableDebugInfo(Module &M) {
Changed = true; Changed = true;
} }
}; };
RemoveUses("llvm.dbg.addr");
RemoveUses("llvm.dbg.declare"); RemoveUses("llvm.dbg.declare");
RemoveUses("llvm.dbg.value"); RemoveUses("llvm.dbg.value");

8
llvm/test/Transforms/Util/strip-nonlinetable-debuginfo-localvars.ll
View File

@ -3,14 +3,18 @@
define void @f() !dbg !4 { define void @f() !dbg !4 {
entry: entry:
%i = alloca i32, align 4 %i = alloca i32, align 4
; CHECK-NOT: llvm.dbg.declare ; CHECK-NOT: llvm.dbg.{{addr|declare|value}}
call void @llvm.dbg.declare(metadata i32* %i, metadata !11, metadata !13), !dbg !14 call void @llvm.dbg.declare(metadata i32* %i, metadata !11, metadata !13), !dbg !14
call void @llvm.dbg.addr(metadata i32* %i, metadata !16, metadata !13), !dbg !14
store i32 42, i32* %i, align 4, !dbg !14 store i32 42, i32* %i, align 4, !dbg !14
call void @llvm.dbg.value(metadata i32 0, metadata !16, metadata !13), !dbg !15
ret void, !dbg !15 ret void, !dbg !15
} }
; Function Attrs: nounwind readnone ; Function Attrs: nounwind readnone
declare void @llvm.dbg.addr(metadata, metadata, metadata)
declare void @llvm.dbg.declare(metadata, metadata, metadata) declare void @llvm.dbg.declare(metadata, metadata, metadata)
declare void @llvm.dbg.value(metadata, metadata, metadata)
!llvm.dbg.cu = !{!0} !llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!7, !8, !9} !llvm.module.flags = !{!7, !8, !9}
@ -22,6 +26,7 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata)
; CHECK: ![[F]] = distinct !DISubprogram(name: "f" ; CHECK: ![[F]] = distinct !DISubprogram(name: "f"
; CHECK-NOT: retainedNodes: ; CHECK-NOT: retainedNodes:
; CHECK-NOT: distinct !DISubprogram(name: "f" ; CHECK-NOT: distinct !DISubprogram(name: "f"
; CHECK-NOT: DILocalVariable
!4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, unit: !0, retainedNodes: !2) !4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, unit: !0, retainedNodes: !2)
!5 = !DISubroutineType(types: !6) !5 = !DISubroutineType(types: !6)
!6 = !{null} !6 = !{null}
@ -34,3 +39,4 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata)
!13 = !DIExpression() !13 = !DIExpression()
!14 = !DILocation(line: 1, column: 16, scope: !4) !14 = !DILocation(line: 1, column: 16, scope: !4)
!15 = !DILocation(line: 1, column: 24, scope: !4) !15 = !DILocation(line: 1, column: 24, scope: !4)
!16 = !DILocalVariable(name: "j", scope: !4, file: !1, line: 1, type: !12)