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

[Chris Lattner]

Changes in directory llvm/lib/Target:

README.txt updated: 1.17 -> 1.18
---
Log message:

remove two implemented items


---
Diffs of the changes:  (+0 -22)

 README.txt |   22 ----------------------
 1 files changed, 22 deletions(-)


Index: llvm/lib/Target/README.txt
diff -u llvm/lib/Target/README.txt:1.17 llvm/lib/Target/README.txt:1.18
--- llvm/lib/Target/README.txt:1.17	Sat Mar 11 14:20:40 2006
+++ llvm/lib/Target/README.txt	Mon Mar 13 00:52:22 2006
@@ -56,20 +56,6 @@
 
 //===---------------------------------------------------------------------===//
 
-DAG combine this into mul A, 8:
-
-int %test(int %A) {
-  %B = mul int %A, 8  ;; shift
-  %C = add int %B, 7  ;; dead, no demanded bits.
-  %D = and int %C, -8 ;; dead once add is gone.
-  ret int %D
-}
-
-This sort of thing occurs in the alloca lowering code and other places that
-are generating alignment of an already aligned value.
-
-//===---------------------------------------------------------------------===//
-
 Turn this into a signed shift right in instcombine:
 
 int f(unsigned x) {
@@ -81,14 +67,6 @@
 
 //===---------------------------------------------------------------------===//
 
-We should reassociate:
-int f(int a, int b){ return a * a + 2 * a * b + b * b; }
-into:
-int f(int a, int b) { return a * (a + 2 * b) + b * b; }
-to eliminate a multiply.
-
-//===---------------------------------------------------------------------===//
-
 On targets with expensive 64-bit multiply, we could LSR this:
 
 for (i = ...; ++i) {