llvm-6502/include/llvm/Bitcode
Jan Wen Voung d9a3bad448 Change encoding of instruction operands in bitcode binaries to be relative
to the instruction position.  The old encoding would give an absolute
ID which counts up within a function, and only resets at the next function.

I.e., Instead of having:

... = icmp eq i32 n-1, n-2
br i1 ..., label %bb1, label %bb2

it will now be roughly:

... = icmp eq i32 1, 2
br i1 1, label %bb1, label %bb2

This makes it so that ids remain relatively small and can be encoded
in fewer bits.

With this encoding, forward reference operands will be given
negative-valued IDs.  Use signed VBRs for the most common case
of forward references, which is phi instructions.

To retain backward compatibility we bump the bitcode version
from 0 to 1 to distinguish between the different encodings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165739 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 20:20:40 +00:00
..
Archive.h Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767 2012-09-27 10:14:43 +00:00
BitCodes.h Enable the small vector POD optimization for BitCodeAbbrevOp. 2012-03-03 15:04:13 +00:00
BitstreamReader.h Change encoding of instruction operands in bitcode binaries to be relative 2012-10-11 20:20:40 +00:00
BitstreamWriter.h Pacify PVS-Studio by changing the type rather than doing a cast, a tweak 2012-08-21 16:20:37 +00:00
LLVMBitCodes.h [ms-inline asm] Enumerate the InlineAsm dialects and rename the nsdialect to 2012-09-05 19:00:49 +00:00
ReaderWriter.h Remove 'static' from inline functions defined in header files. 2012-06-20 08:39:33 +00:00