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, 7 insertions, 7 deletions

diff --git a/llvm/test/DebugInfo/X86/dbg-merge-loc-entry.ll b/llvm/test/DebugInfo/X86/dbg-merge-loc-entry.ll
index 2af4fe74660..0d562223b8c 100644
--- a/llvm/test/DebugInfo/X86/dbg-merge-loc-entry.ll
+++ b/llvm/test/DebugInfo/X86/dbg-merge-loc-entry.ll
@@ -55,19 +55,19 @@ declare %0 @llvm.uadd.with.overflow.i64(i64, i64) nounwind readnone
 !12 = !{!"0x16\00TItype\00160\000\000\000\000", !30, !6, !13} ; [ DW_TAG_typedef ]
 !13 = !{!"0x24\00\000\00128\00128\000\000\005", !29, !1} ; [ DW_TAG_base_type ]
 !14 = !{!"0x101\00u\001093\000", !9, !1, !12} ; [ DW_TAG_arg_variable ]
-!15 = !{i32 1093, i32 0, !9, null}
+!15 = !MDLocation(line: 1093, scope: !9)
 !16 = !{i64 0}
 !17 = !{!"0x100\00c\001095\000", !18, !1, !19} ; [ DW_TAG_auto_variable ]
 !18 = !{!"0xb\001094\000\0013", !29, !9} ; [ DW_TAG_lexical_block ]
 !19 = !{!"0x16\00word_type\00424\000\000\000\000", !30, !6, !20} ; [ DW_TAG_typedef ]
 !20 = !{!"0x24\00long int\000\0064\0064\000\000\005", !29, !1} ; [ DW_TAG_base_type ]
-!21 = !{i32 1095, i32 0, !18, null}
-!22 = !{i32 1103, i32 0, !18, null}
-!23 = !{i32 1104, i32 0, !18, null}
-!24 = !{i32 1003, i32 0, !25, !26}
+!21 = !MDLocation(line: 1095, scope: !18)
+!22 = !MDLocation(line: 1103, scope: !18)
+!23 = !MDLocation(line: 1104, scope: !18)
+!24 = !MDLocation(line: 1003, scope: !25, inlinedAt: !26)
 !25 = !{!"0xb\00879\000\000", !29, !0} ; [ DW_TAG_lexical_block ]
-!26 = !{i32 1107, i32 0, !18, null}
-!27 = !{i32 1111, i32 0, !18, null}
+!26 = !MDLocation(line: 1107, scope: !18)
+!27 = !MDLocation(line: 1111, scope: !18)
 !28 = !{!0, !9}
 !29 = !{!"foobar.c", !"/tmp"}
 !30 = !{!"foobar.h", !"/tmp"}