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

[Chris Lattner]

Changes in directory llvm/lib/Target/X86:

README.txt updated: 1.107 -> 1.108
---
Log message:

Particularly ugly code.


---
Diffs of the changes:  (+14 -0)

 README.txt |   14 ++++++++++++++
 1 files changed, 14 insertions(+)


Index: llvm/lib/Target/X86/README.txt
diff -u llvm/lib/Target/X86/README.txt:1.107 llvm/lib/Target/X86/README.txt:1.108
--- llvm/lib/Target/X86/README.txt:1.107	Thu May 18 12:38:16 2006
+++ llvm/lib/Target/X86/README.txt	Fri May 19 14:41:33 2006
@@ -36,6 +36,20 @@
 
 //===---------------------------------------------------------------------===//
 
+On darwin/x86, we should codegen:
+
+        ret double 0.000000e+00
+
+as fld0/ret, not as:
+
+        movl $0, 4(%esp)
+        movl $0, (%esp)
+        fldl (%esp)
+	...
+        ret
+
+//===---------------------------------------------------------------------===//
+
 This should use fiadd on chips where it is profitable:
 double foo(double P, int *I) { return P+*I; }