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.

llvm-svn: 226048

1 files changed, 5 insertions, 5 deletions

diff --git a/llvm/test/Transforms/LoopVectorize/debugloc.ll b/llvm/test/Transforms/LoopVectorize/debugloc.ll
index 68411bae3b9..634bf79ddf0 100644
--- a/llvm/test/Transforms/LoopVectorize/debugloc.ll
+++ b/llvm/test/Transforms/LoopVectorize/debugloc.ll
@@ -82,9 +82,9 @@ attributes #1 = { nounwind readnone }
 !16 = !{!"0x100\00i\005\000", !17, !6, !11} ; [ DW_TAG_auto_variable ] [i] [line 5]
 !17 = !{!"0xb\005\000\000", !5, !4} ; [ DW_TAG_lexical_block ] [/Volumes/Data/backedup/dev/os/llvm/debug/<stdin>]
 !18 = !{i32 2, !"Dwarf Version", i32 3}
-!19 = !{i32 3, i32 0, !4, null}
-!20 = !{i32 4, i32 0, !4, null}
-!21 = !{i32 5, i32 0, !17, null}
-!22 = !{i32 6, i32 0, !17, null}
-!26 = !{i32 7, i32 0, !4, null}
+!19 = !MDLocation(line: 3, scope: !4)
+!20 = !MDLocation(line: 4, scope: !4)
+!21 = !MDLocation(line: 5, scope: !17)
+!22 = !MDLocation(line: 6, scope: !17)
+!26 = !MDLocation(line: 7, scope: !4)
 !27 = !{i32 1, !"Debug Info Version", i32 2}