[PATCH] D78416: [docs][NFC] Mention FastISel as a default instruction selector.

[Shivam Gupta via Phabricator via llvm-commits]

xgupta updated this revision to Diff 258504.
xgupta retitled this revision from "[docs][NFC] Mention FastISel as a default instruction selector for X86 target" to "[docs][NFC] Mention FastISel as a default instruction selector.".
xgupta edited the summary of this revision.
xgupta removed a subscriber: craig.topper.
xgupta added a comment.

Update Title & Summary


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D78416/new/

https://reviews.llvm.org/D78416

Files:
  llvm/docs/CodeGenerator.rst


Index: llvm/docs/CodeGenerator.rst
===================================================================
--- llvm/docs/CodeGenerator.rst
+++ llvm/docs/CodeGenerator.rst
@@ -719,9 +719,11 @@
 ---------------------
 
 Instruction Selection is the process of translating LLVM code presented to the
-code generator into target-specific machine instructions.  There are several
-well-known ways to do this in the literature.  LLVM uses a SelectionDAG based
-instruction selector.
+code generator into target-specific machine instructions.  There are several 
+well-known ways to do this in the literature.  LLVM have three types of 
+instruction selector.  1. SelectionDAG 2. FastIsel 3. GlobalIsel
+FastIsel is the default instruction selector for X86 target.  GlobalIsel is 
+intended to be a replacement of SelectionDAG and FastIsel.
 
 Portions of the DAG instruction selector are generated from the target
 description (``*.td``) files.  Our goal is for the entire instruction selector


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