[llvm-commits] CVS: llvm/lib/Target/X86/README.txt

[Evan Cheng]

Changes in directory llvm/lib/Target/X86:

README.txt updated: 1.51 -> 1.52
---
Log message:

Add a entry.


---
Diffs of the changes:  (+17 -0)

 README.txt |   17 +++++++++++++++++
 1 files changed, 17 insertions(+)


Index: llvm/lib/Target/X86/README.txt
diff -u llvm/lib/Target/X86/README.txt:1.51 llvm/lib/Target/X86/README.txt:1.52
--- llvm/lib/Target/X86/README.txt:1.51	Thu Feb  9 23:48:15 2006
+++ llvm/lib/Target/X86/README.txt	Tue Feb 14 02:25:32 2006
@@ -426,3 +426,20 @@
 //===---------------------------------------------------------------------===//
 
 Use fisttp to do FP to integer conversion whenever it is available.
+
+//===---------------------------------------------------------------------===//
+
+Instead of the following for memset char*, 1, 10:
+
+	movl $16843009, 4(%edx)
+	movl $16843009, (%edx)
+	movw $257, 8(%edx)
+
+It might be better to generate
+
+	movl $16843009, %eax
+	movl %eax, 4(%edx)
+	movl %eax, (%edx)
+	movw al, 8(%edx)
+	
+when we can spare a register. It reduces code size.