Changes in directory llvm/lib/Target/X86:
README.txt updated: 1.64 -> 1.65
---
Log message:
a couple of miscellaneous things.
---
Diffs of the changes: (+18 -0)
README.txt | 18 ++++++++++++++++++
1 files changed, 18 insertions(+)
Index: llvm/lib/Target/X86/README.txt
diff -u llvm/lib/Target/X86/README.txt:1.64 llvm/lib/Target/X86/README.txt:1.65
--- llvm/lib/Target/X86/README.txt:1.64 Sat Mar 4 19:15:18 2006
+++ llvm/lib/Target/X86/README.txt Wed Mar 8 19:39:46 2006
@@ -566,3 +566,21 @@
jb LBB_foo_3 # no_exit
//===---------------------------------------------------------------------===//
+
+Codegen:
+ if (copysign(1.0, x) == copysign(1.0, y))
+into:
+ if (x^y & mask)
+when using SSE.
+
+//===---------------------------------------------------------------------===//
+
+Optimize this into something reasonable:
+ x * copysign(1.0, y) * copysign(1.0, z)
+
+//===---------------------------------------------------------------------===//
+
+Optimize copysign(x, *y) to use an integer load from y.
+
+//===---------------------------------------------------------------------===//
+
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