Remove fixed item
authorNate Begeman <natebegeman@mac.com>
Fri, 9 Feb 2007 04:19:54 +0000 (04:19 +0000)
committerNate Begeman <natebegeman@mac.com>
Fri, 9 Feb 2007 04:19:54 +0000 (04:19 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34081 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/README.txt

index 2114fde89a1929efe71c9ed0a787c22a3cb2f97f..a615b7ef6dfdae7326e41a48c18542dd82d53f3d 100644 (file)
@@ -265,32 +265,6 @@ This could be done in the dag combiner, by swapping a BR_CC when a SETCC of the
 same operands (but backwards) exists.  In this case, this wouldn't save us 
 anything though, because the compares still wouldn't be shared.
 
-===-------------------------------------------------------------------------===
-
-The legalizer should lower this:
-
-bool %test(ulong %x) {
-  %tmp = setlt ulong %x, 4294967296
-  ret bool %tmp
-}
-
-into "if x.high == 0", not:
-
-_test:
-        cntlzw r2, r3
-        xori r3, r3, 1
-        cmplwi cr0, r3, 0
-        srwi r2, r2, 5
-        li r3, 0
-        beq cr0, LBB1_2 ;entry
-LBB1_1: ;entry
-        mr r3, r2
-LBB1_2: ;entry
-        blr 
-
-noticed in 2005-05-11-Popcount-ffs-fls.c.
-
-
 ===-------------------------------------------------------------------------===
 
 We should custom expand setcc instead of pretending that we have it.  That