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88e419d66e
Remove 'inlinedAt:' from MDLocalVariable. Besides saving some memory (variables with it seem to be single largest `Metadata` contributer to memory usage right now in -g -flto builds), this stops optimization and backend passes from having to change local variables. The 'inlinedAt:' field was used by the backend in two ways: 1. To tell the backend whether and into what a variable was inlined. 2. To create a unique id for each inlined variable. Instead, rely on the 'inlinedAt:' field of the intrinsic's `!dbg` attachment, and change the DWARF backend to use a typedef called `InlinedVariable` which is `std::pair<MDLocalVariable*, MDLocation*>`. This `DebugLoc` is already passed reliably through the backend (as verified by r234021). This commit removes the check from r234021, but I added a new check (that will survive) in r235048, and changed the `DIBuilder` API in r235041 to require a `!dbg` attachment whose 'scope:` is in the same `MDSubprogram` as the variable's. If this breaks your out-of-tree testcases, perhaps the script I used (mdlocalvariable-drop-inlinedat.sh) will help; I'll attach it to PR22778 in a moment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235050 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
1.3 KiB
LLVM
27 lines
1.3 KiB
LLVM
; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
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; RUN: verify-uselistorder %s
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@foo = global i32 0
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; CHECK: !named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8}
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!named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8}
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!0 = distinct !MDSubprogram()
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!1 = distinct !{}
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!2 = !MDFile(filename: "path/to/file", directory: "/path/to/dir")
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!3 = !MDBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!4 = !MDLocation(scope: !0)
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; CHECK: !5 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "foo", arg: 3, scope: !0, file: !2, line: 7, type: !3, flags: DIFlagArtificial)
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; CHECK: !6 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "foo", scope: !0, file: !2, line: 7, type: !3, flags: DIFlagArtificial)
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!5 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "foo", arg: 3,
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scope: !0, file: !2, line: 7, type: !3,
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flags: DIFlagArtificial)
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!6 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "foo", scope: !0,
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file: !2, line: 7, type: !3, flags: DIFlagArtificial)
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; CHECK: !7 = !MDLocalVariable(tag: DW_TAG_arg_variable, arg: 0, scope: !0)
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; CHECK: !8 = !MDLocalVariable(tag: DW_TAG_auto_variable, scope: !0)
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!7 = !MDLocalVariable(tag: DW_TAG_arg_variable, scope: !0)
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!8 = !MDLocalVariable(tag: DW_TAG_auto_variable, scope: !0)
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