DI: Fold constant arguments into a single MDString

This patch addresses the first stage of PR17891 by folding constant
arguments together into a single MDString.  Integers are stringified and
a `\0` character is used as a separator.

Part of PR17891.

Note: I've attached my testcases upgrade scripts to the PR.  If I've
just broken your out-of-tree testcases, they might help.

llvm-svn: 218914

1 files changed, 13 insertions, 13 deletions

diff --git a/llvm/test/Transforms/LoopVectorize/dbg.value.ll b/llvm/test/Transforms/LoopVectorize/dbg.value.ll
index a42a21a3076..91d07d409e2 100644
--- a/llvm/test/Transforms/LoopVectorize/dbg.value.ll
+++ b/llvm/test/Transforms/LoopVectorize/dbg.value.ll
@@ -44,27 +44,27 @@ attributes #1 = { nounwind readnone }
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!26}
 
-!0 = metadata !{i32 786449, metadata !25, i32 4, metadata !"clang", i1 true, metadata !"", i32 0, metadata !1, metadata !1, metadata !2, metadata !11, null, metadata !""}
+!0 = metadata !{metadata !"0x11\004\00clang\001\00\000\00\000", metadata !25, metadata !1, metadata !1, metadata !2, metadata !11, null} ; [ DW_TAG_compile_unit ]
 !1 = metadata !{i32 0}
 !2 = metadata !{metadata !3}
-!3 = metadata !{i32 786478, metadata !25, metadata !4, metadata !"test", metadata !"test", metadata !"test", i32 5, metadata !5, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 ()* @test, null, null, metadata !8, i32 5}
-!4 = metadata !{i32 786473, metadata !25}
-!5 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!3 = metadata !{metadata !"0x2e\00test\00test\00test\005\000\001\000\006\00256\001\005", metadata !25, metadata !4, metadata !5, null, i32 ()* @test, null, null, metadata !8} ; [ DW_TAG_subprogram ]
+!4 = metadata !{metadata !"0x29", metadata !25} ; [ DW_TAG_file_type ]
+!5 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !6, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !6 = metadata !{metadata !7}
-!7 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5}
+!7 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ]
 !8 = metadata !{metadata !9}
-!9 = metadata !{i32 786688, metadata !10, metadata !"i", metadata !4, i32 6, metadata !7, i32 0, i32 0}
-!10 = metadata !{i32 786443, metadata !25, metadata !3, i32 6, i32 0, i32 0}
+!9 = metadata !{metadata !"0x100\00i\006\000", metadata !10, metadata !4, metadata !7} ; [ DW_TAG_auto_variable ]
+!10 = metadata !{metadata !"0xb\006\000\000", metadata !25, metadata !3} ; [ DW_TAG_lexical_block ]
 !11 = metadata !{metadata !12, metadata !16, metadata !17}
-!12 = metadata !{i32 786484, i32 0, null, metadata !"A", metadata !"A", metadata !"", metadata !4, i32 1, metadata !13, i32 0, i32 1, [1024 x i32]* @A, null}
-!13 = metadata !{i32 786433, null, null, null, i32 0, i64 32768, i64 32, i32 0, i32 0, metadata !7, metadata !14, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 32768, align 32, offset 0] [from int]
+!12 = metadata !{metadata !"0x34\00A\00A\00\001\000\001", null, metadata !4, metadata !13, [1024 x i32]* @A, null} ; [ DW_TAG_variable ]
+!13 = metadata !{metadata !"0x1\00\000\0032768\0032\000\000", null, null, metadata !7, metadata !14, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 32768, align 32, offset 0] [from int]
 !14 = metadata !{metadata !15}
 !15 = metadata !{i32 786465, i64 0, i64 1024}
-!16 = metadata !{i32 786484, i32 0, null, metadata !"B", metadata !"B", metadata !"", metadata !4, i32 2, metadata !13, i32 0, i32 1, [1024 x i32]* @B, null}
-!17 = metadata !{i32 786484, i32 0, null, metadata !"C", metadata !"C", metadata !"", metadata !4, i32 3, metadata !13, i32 0, i32 1, [1024 x i32]* @C, null} 
+!16 = metadata !{metadata !"0x34\00B\00B\00\002\000\001", null, metadata !4, metadata !13, [1024 x i32]* @B, null} ; [ DW_TAG_variable ]
+!17 = metadata !{metadata !"0x34\00C\00C\00\003\000\001", null, metadata !4, metadata !13, [1024 x i32]* @C, null} ; [ DW_TAG_variable ]
 !18 = metadata !{i32 6, i32 0, metadata !10, null}
 !19 = metadata !{i32 7, i32 0, metadata !20, null}
-!20 = metadata !{i32 786443, metadata !25, metadata !10, i32 6, i32 0, i32 1}
+!20 = metadata !{metadata !"0xb\006\000\001", metadata !25, metadata !10} ; [ DW_TAG_lexical_block ]
 !24 = metadata !{i32 9, i32 0, metadata !3, null}
 !25 = metadata !{metadata !"test", metadata !"/path/to/somewhere"}
-!26 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}
+!26 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}