X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FX86%2FREADME.txt;h=073e2dacef183b26bab7ac32332d4a19f2702471;hb=c59e52108bbfca50b23c5d10706484d4b012c344;hp=4648630c974dfc068e046d3103bcf30a83af2cc2;hpb=107f54a0026cfc455252c5a79b4860ace4bbbfc1;p=oota-llvm.git

diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt
index 4648630c974..073e2dacef1 100644
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -402,9 +402,7 @@ L4:
 There are 3 issues:
 
 1. Lack of post regalloc LICM.
-2. Poor sub-regclass support. That leads to inability to promote the 16-bit
-   arithmetic op to 32-bit and making use of leal.
-3. LSR unable to reused IV for a different type (i16 vs. i32) even though
+2. LSR unable to reused IV for a different type (i16 vs. i32) even though
    the cast would be free.
 
 //===---------------------------------------------------------------------===//
@@ -475,21 +473,6 @@ require a copy to be inserted (in X86InstrInfo::convertToThreeAddress).
 
 //===---------------------------------------------------------------------===//
 
-Bad codegen:
-
-char foo(int x) { return x; }
-
-_foo:
-	movl 4(%esp), %eax
-	shll $24, %eax
-	sarl $24, %eax
-	ret
-
-SIGN_EXTEND_INREG can be implemented as (sext (trunc)) to take advantage of 
-sub-registers.
-
-//===---------------------------------------------------------------------===//
-
 Consider this:
 
 typedef struct pair { float A, B; } pair;