[llvm-commits] CVS: llvm/lib/Target/X86/README.txt

[Evan Cheng]

Changes in directory llvm/lib/Target/X86:

README.txt updated: 1.18 -> 1.19
---
Log message:

Added some isel ideas.


---
Diffs of the changes:  (+14 -0)

 README.txt |   14 ++++++++++++++
 1 files changed, 14 insertions(+)


Index: llvm/lib/Target/X86/README.txt
diff -u llvm/lib/Target/X86/README.txt:1.18 llvm/lib/Target/X86/README.txt:1.19
--- llvm/lib/Target/X86/README.txt:1.18	Thu Dec  1 18:11:20 2005
+++ llvm/lib/Target/X86/README.txt	Fri Dec 16 19:25:19 2005
@@ -88,3 +88,17 @@
         movzbl  %dil, %eax
         xorl    $1, %eax
         ret
+
+//===---------------------------------------------------------------------===//
+
+Some isel ideas:
+
+1. Dynamic programming based approach when compile time if not an
+   issue.
+2. Code duplication (addressing mode) during isel.
+3. Other ideas from "Register-Sensitive Selection, Duplication, and
+   Sequencing of Instructions".
+
+//===---------------------------------------------------------------------===//
+
+Should we promote i16 to i32 to avoid partial register update stalls?