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| author | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-10-23 17:28:19 +0000 |
|---|---|---|
| committer | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-10-23 17:28:19 +0000 |
| commit | 8e3851a6eb9fe5fc30094c3a00d2b89c7cd68cbd (patch) | |
| tree | aa761eb31c1f7c14a3c9e313f4a1d29ea06e066b /docs | |
| parent | f39fe46062d2093fc3d7c092bc8c4561b744164c (diff) | |
| download | llvm-8e3851a6eb9fe5fc30094c3a00d2b89c7cd68cbd.tar.gz llvm-8e3851a6eb9fe5fc30094c3a00d2b89c7cd68cbd.tar.bz2 llvm-8e3851a6eb9fe5fc30094c3a00d2b89c7cd68cbd.tar.xz | |
Use address-taken to disambiguate global variable and indirect memops.
Major steps include:
1). introduces a not-addr-taken bit-field in GlobalVariable
2). GlobalOpt pass sets "not-address-taken" if it proves a global varirable
dosen't have its address taken.
3). AA use this info for disambiguation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193251 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/LangRef.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/LangRef.rst b/docs/LangRef.rst index b75c6b1b80..1e2016bfbd 100644 --- a/docs/LangRef.rst +++ b/docs/LangRef.rst @@ -511,6 +511,9 @@ module, including those with external linkage or appearing in ``@llvm.used``. This assumption may be suppressed by marking the variable with ``externally_initialized``. +If a global variable dose not have its address taken, it will be optionally +flagged ``notaddrtaken``. + An explicit alignment may be specified for a global, which must be a power of 2. If not present, or if the alignment is set to zero, the alignment of the global is set by the target to whatever it feels |