Remove a completed entry; add a new entry about fisttp op

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26105 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt
index 6ff181771be62fc7ffa995958c34bc07b6d31e19..3bbf3c26e413006a647450c17dea449209b97ce4 100644 (file)
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -114,10 +114,6 @@ FP_TO_SINT when the source operand is already in memory.
 
 //===---------------------------------------------------------------------===//
 
-Check if load folding would add a cycle in the dag.
-
-//===---------------------------------------------------------------------===//
-
 Model X86 EFLAGS as a real register to avoid redudant cmp / test. e.g.
 
        cmpl $1, %eax
@@ -427,3 +423,6 @@ _foo:
 
 When: "movl $_dst, _ptr" is sufficient.
 
+//===---------------------------------------------------------------------===//
+
+Use fisttp to do FP to integer conversion whenever it is available.