llvm-6502/lib/Bitcode/Reader
Duncan P. N. Exon Smith bd24fe8c7e Bitcode: Serialize (and recover) use-list order
Predict and serialize use-list order in bitcode.  This makes the option
`-preserve-bc-use-list-order` work *most* of the time, but this is still
experimental.

  - Builds a full value-table up front in the writer, sets up a list of
    use-list orders to write out, and discards the table.  This is a
    simpler first step than determining the order from the various
    overlapping IDs of values on-the-fly.

  - The shuffles stored in the use-list order list have an unnecessarily
    large memory footprint.

  - `blockaddress` expressions cause functions to be materialized
    out-of-order.  For now I've ignored this problem, so use-list orders
    will be wrong for constants used by functions that have block
    addresses taken.  There are a couple of ways to fix this, but I
    don't have a concrete plan yet.

  - When materializing functions lazily, the use-lists for constants
    will not be correct.  This use case is out of scope: what should the
    use-list order be, if it's incomplete?

This is part of PR5680.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214125 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-28 21:19:41 +00:00
..
BitcodeReader.cpp Bitcode: Serialize (and recover) use-list order 2014-07-28 21:19:41 +00:00
BitcodeReader.h Bitcode: Serialize (and recover) use-list order 2014-07-28 21:19:41 +00:00
BitReader.cpp Remove 'using std::errro_code' from lib. 2014-06-13 02:24:39 +00:00
BitstreamReader.cpp Replace some assert(0)'s with llvm_unreachable. 2014-06-18 05:05:13 +00:00
CMakeLists.txt BitstreamReader hasn't aged well. It's been hacked on by various people and 2013-01-19 18:19:39 +00:00
LLVMBuild.txt LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
Makefile