[llvm-commits] [llvm] r76631 - /llvm/trunk/lib/Target/README.txt

[Eli Friedman]

Author: efriedma
Date: Tue Jul 21 15:05:43 2009
New Revision: 76631

URL: http://llvm.org/viewvc/llvm-project?rev=76631&view=rev
Log:
Remove a couple of already-implemented notes.


Modified:
    llvm/trunk/lib/Target/README.txt

Modified: llvm/trunk/lib/Target/README.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/README.txt?rev=76631&r1=76630&r2=76631&view=diff

==============================================================================
--- llvm/trunk/lib/Target/README.txt (original)
+++ llvm/trunk/lib/Target/README.txt Tue Jul 21 15:05:43 2009
@@ -197,13 +197,6 @@
 
 //===---------------------------------------------------------------------===//
 
-Legalize should lower ctlz like this:
-  ctlz(x) = popcnt((x-1) & ~x)
-
-on targets that have popcnt but not ctlz.  itanium, what else?
-
-//===---------------------------------------------------------------------===//
-
 quantum_sigma_x in 462.libquantum contains the following loop:
 
       for(i=0; i<reg->size; i++)
@@ -335,11 +328,6 @@
 
 //===---------------------------------------------------------------------===//
 
-Promote for i32 bswap can use i64 bswap + shr.  Useful on targets with 64-bit
-regs and bswap, like itanium.
-
-//===---------------------------------------------------------------------===//
-
 LSR should know what GPR types a target has.  This code:
 
 volatile short X, Y; // globals