encode the type and decl offsets with 32-bits for entry instead
of 64 bits. This cuts 400KB off the PCH file for cocoa (7.1 ->
6.7MB):
Before:
Record Histogram:
Count # Bits % Abv Record Kind
1 14296 SOURCE_LOCATION_PRELOADS
1 1699598 100.00 SOURCE_LOCATION_OFFSETS
1 1870766 100.00 METHOD_POOL
1 212988 100.00 SELECTOR_OFFSETS
1 88 STATISTICS
1 106 SPECIAL_TYPES
1 18033788 100.00 IDENTIFIER_TABLE
1 1806428 100.00 IDENTIFIER_OFFSET
1 170 100.00 TARGET_TRIPLE
1 268 LANGUAGE_OPTIONS
1 5168252 100.00 DECL_OFFSET
1 952700 100.00 TYPE_OFFSET
After:
Record Histogram:
Count # Bits % Abv Record Kind
1 14296 SOURCE_LOCATION_PRELOADS
1 1699598 100.00 SOURCE_LOCATION_OFFSETS
1 1870766 100.00 METHOD_POOL
1 212988 100.00 SELECTOR_OFFSETS
1 88 STATISTICS
1 106 SPECIAL_TYPES
1 18033788 100.00 IDENTIFIER_TABLE
1 1806428 100.00 IDENTIFIER_OFFSET
1 170 100.00 TARGET_TRIPLE
1 268 LANGUAGE_OPTIONS
1 2584156 100.00 DECL_OFFSET
1 476380 100.00 TYPE_OFFSET
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70216 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHReader.cpp b/lib/Frontend/PCHReader.cpp
index bace23c..f26cd84 100644
--- a/lib/Frontend/PCHReader.cpp
+++ b/lib/Frontend/PCHReader.cpp
@@ -793,7 +793,7 @@
Error("Duplicate TYPE_OFFSET record in PCH file");
return Failure;
}
- TypeOffsets = (const uint64_t *)BlobStart;
+ TypeOffsets = (const uint32_t *)BlobStart;
TypesLoaded.resize(Record[0]);
break;
@@ -802,7 +802,7 @@
Error("Duplicate DECL_OFFSET record in PCH file");
return Failure;
}
- DeclOffsets = (const uint64_t *)BlobStart;
+ DeclOffsets = (const uint32_t *)BlobStart;
DeclsLoaded.resize(Record[0]);
break;