c672ba7dde
With intrinsics representing debug-info, we just clone all the intrinsics when inlining a function and don't think about it any further. With non-instruction debug-info however we need to be a bit more careful and manually move the debug-info from one place to another. For the most part, this means keeping a "cursor" during block cloning of where we last copied debug-info from, and performing debug-info copying whenever we successfully clone another instruction. There are several utilities in LLVM for doing this, all of which now need to manually call cloneDebugInfo. The testing story for this is not well covered as we could rely on normal instruction-cloning mechanisms to do all the hard stuff. Thus, I've added a few tests to explicitly test dbg.value behaviours, ahead of them becoming not-instructions.
49 lines
1.9 KiB
LLVM
49 lines
1.9 KiB
LLVM
; RUN: opt -passes='cgscc(inline)' -S < %s | FileCheck %s
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; RUN: opt -passes='cgscc(inline)' -S < %s --try-experimental-debuginfo-iterators | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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; Function @bar contains instruction %cmp which is not associated to any debug
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; location. This test verifies that the inliner doesn't incorrectly attribute
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; the callsite debug location to %cmp.
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define i32 @bar(i32 %a, i32 %b) #0 !dbg !6 {
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entry:
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%inc = add i32 %a, 1, !dbg !8
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%cmp = icmp slt i32 %inc, %b
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%select = select i1 %cmp, i32 %a, i32 %b, !dbg !8
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ret i32 %select, !dbg !8
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}
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; CHECK-LABEL: define i32 @baz(
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; CHECK: entry:
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; CHECK: %[[INC:[a-z0-9.]+]] = add i32 %a, 1, !dbg ![[DL:[0-9]+]]
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; CHECK: %[[CMP:[a-z0-9.]+]] = icmp slt i32 %[[INC]], %b
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; CHECK-NOT: !dbg
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; CHECK: %[[SELECT:[a-z0-9.]+]] = select i1 %[[CMP]], i32 %a, i32 %b, !dbg ![[DL]]
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;
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; ![[DL]] = !DILocation(line: 3, scope: !{{.*}}, inlinedAt: {{.*}})
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define i32 @baz(i32 %a, i32 %b) !dbg !9 {
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entry:
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%call = tail call i32 @bar(i32 %a, i32 %b), !dbg !10
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ret i32 %call, !dbg !10
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}
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attributes #0 = { alwaysinline }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2)
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!1 = !DIFile(filename: "test.c", directory: "")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
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!7 = !DISubroutineType(types: !2)
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!8 = !DILocation(line: 3, scope: !6)
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!9 = distinct !DISubprogram(name: "baz", scope: !1, file: !1, line: 11, type: !7, isLocal: false, isDefinition: true, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
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!10 = !DILocation(line: 12, scope: !9)
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