Akira Hatanaka ec268660c8 [AttributeSet] Overload AttributeSet::addAttribute to reduce compile ...

time.

The new overloaded function is used when an attribute is added to a
large number of slots of an AttributeSet (for example, to function
parameters). This is much faster than calling AttributeSet::addAttribute
once per slot, because AttributeSet::getImpl (which calls
FoldingSet::FIndNodeOrInsertPos) is called only once per function
instead of once per slot.

With this commit, clang compiles a file which used to take over 22
minutes in just 13 seconds.

rdar://problem/23581000

Differential Revision: http://reviews.llvm.org/D15085


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254491 91177308-0d34-0410-b5e6-96231b3b80d8

2015-12-02 06:58:49 +00:00

..

llvm

[AttributeSet] Overload AttributeSet::addAttribute to reduce compile

2015-12-02 06:58:49 +00:00

llvm-c

[IR] Add support for empty tokens

2015-11-11 21:57:16 +00:00