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IR: Move MDLocation into place
This commit moves `MDLocation`, finishing off PR21433. There's an
accompanying clang commit for frontend testcases. I'll attach the
testcase upgrade script I used to PR21433 to help out-of-tree
frontends/backends.
This changes the schema for `DebugLoc` and `DILocation` from:
!{i32 3, i32 7, !7, !8}
to:
!MDLocation(line: 3, column: 7, scope: !7, inlinedAt: !8)
Note that empty fields (line/column: 0 and inlinedAt: null) don't get
printed by the assembly writer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226048 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -68,8 +68,8 @@ entry:
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!11 = !{i32 2, !"Debug Info Version", i32 2}
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!12 = !{i32 1, !"PIC Level", i32 2}
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!13 = !{!"clang version 3.6.0 (trunk 224193) (llvm/trunk 224197)"}
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!14 = !{i32 2, i32 20, !4, null}
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!14 = !MDLocation(line: 2, column: 20, scope: !4)
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; The same subprogram should be pointed to by inside the !dbg reference.
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; CHECK: ![[LOC]] = !{i32 2, i32 15, ![[SP2]], null}
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!15 = !{i32 2, i32 15, !7, null}
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; CHECK: ![[LOC]] = !MDLocation(line: 2, column: 15, scope: ![[SP2]])
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!15 = !MDLocation(line: 2, column: 15, scope: !7)
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