From 87ce5d85bb8962f40b2f066972a062c0c421fafe Mon Sep 17 00:00:00 2001 From: Jim Laskey Date: Mon, 17 Oct 2005 12:19:10 +0000 Subject: [PATCH] As requested, a blurb on sub-targets. llvm-svn: 23769 --- llvm/docs/CodeGenerator.html | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/llvm/docs/CodeGenerator.html b/llvm/docs/CodeGenerator.html index 39eecc128987..0e63faca3cca 100644 --- a/llvm/docs/CodeGenerator.html +++ b/llvm/docs/CodeGenerator.html @@ -444,7 +444,11 @@ href="TableGenFundamentals.html">TableGen description of the register file.

- TODO +

The TargetSubtarget class is used to provide information about the + specific chip set being targeted. A sub-target informs code generation of + which instructions are supported, instruction latencies and instruction + execution itinerary; i.e., which processing units are used, in what order, and + for how long.