[IR] Split Intrinsics.inc into enums and implementations

Implements PR34259

Intrinsics.h is a very popular header. Most LLVM TUs care about things
like dbg_value, but they don't care how they are implemented. After I
split these out, IntrinsicImpl.inc is 1.7 MB, so this saves each LLVM TU
from scanning 1.7 MB of source that gets pre-processed away.

It also means we can modify intrinsic properties without triggering a
full rebuild, but that's probably less of a win.

I think the next best thing to do would be to split out the target
intrinsics into their own header. Very, very few TUs care about
target-specific intrinsics. It's very hard to split up the target
independent intrinsics like llvm.expect, assume, and dbg.value, though.

llvm-svn: 335407

1 files changed, 4 insertions, 1 deletions

diff --git a/llvm/utils/TableGen/TableGenBackends.h b/llvm/utils/TableGen/TableGenBackends.h
index 09f74aa017f..1329a6d833f 100644
--- a/llvm/utils/TableGen/TableGenBackends.h
+++ b/llvm/utils/TableGen/TableGenBackends.h
@@ -62,7 +62,10 @@ namespace llvm {
 class raw_ostream;
 class RecordKeeper;
 
-void EmitIntrinsics(RecordKeeper &RK, raw_ostream &OS, bool TargetOnly = false);
+void EmitIntrinsicEnums(RecordKeeper &RK, raw_ostream &OS,
+                        bool TargetOnly = false);
+void EmitIntrinsicImpl(RecordKeeper &RK, raw_ostream &OS,
+                       bool TargetOnly = false);
 void EmitAsmMatcher(RecordKeeper &RK, raw_ostream &OS);
 void EmitAsmWriter(RecordKeeper &RK, raw_ostream &OS);
 void EmitCallingConv(RecordKeeper &RK, raw_ostream &OS);