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IR: Add 'distinct' MDNodes to bitcode and assembly

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Propagate whether `MDNode`s are 'distinct' through the other types of IR
(assembly and bitcode).  This adds the `distinct` keyword to assembly.

Currently, no one actually calls `MDNode::getDistinct()`, so these nodes
only get created for:

  - self-references, which are never uniqued, and
  - nodes whose operands are replaced that hit a uniquing collision.

The concept of distinct nodes is still not quite first-class, since
distinct-ness doesn't yet survive across `MapMetadata()`.

Part of PR22111.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225474 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-01-08 22:38:29 +00:00
parent 1cbba214c7
commit f416d72973
20 changed files with 110 additions and 54 deletions
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utils/vim/llvm.vim
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@@ -41,7 +41,7 @@ syn keyword llvmKeyword alignstack alwaysinline appending arm_aapcs_vfpcc
syn keyword llvmKeyword arm_aapcscc arm_apcscc asm atomic available_externally
syn keyword llvmKeyword blockaddress byval c catch cc ccc cleanup coldcc common
syn keyword llvmKeyword constant datalayout declare default define deplibs
syn keyword llvmKeyword dllexport dllimport except extern_weak external
syn keyword llvmKeyword distinct dllexport dllimport except extern_weak external
syn keyword llvmKeyword externally_initialized fastcc filter gc global hidden
syn keyword llvmKeyword initialexec inlinehint inreg intel_ocl_bicc inteldialect
syn keyword llvmKeyword internal linkonce linkonce_odr localdynamic localexec