[llvm-commits] [llvm] r57630 - /llvm/trunk/lib/Target/X86/README-UNIMPLEMENTED.txt

[Chris Lattner]

Author: lattner
Date: Thu Oct 16 01:46:12 2008
New Revision: 57630

URL: http://llvm.org/viewvc/llvm-project?rev=57630&view=rev
Log:
add some notes and a file to collect unimplemented features in the
x86 backend.  These will all be answered with "patches welcome", so
a PR doesn't help drive them along.

Added:
    llvm/trunk/lib/Target/X86/README-UNIMPLEMENTED.txt

Added: llvm/trunk/lib/Target/X86/README-UNIMPLEMENTED.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/README-UNIMPLEMENTED.txt?rev=57630&view=auto

==============================================================================
--- llvm/trunk/lib/Target/X86/README-UNIMPLEMENTED.txt (added)
+++ llvm/trunk/lib/Target/X86/README-UNIMPLEMENTED.txt Thu Oct 16 01:46:12 2008
@@ -0,0 +1,14 @@
+//===---------------------------------------------------------------------===//
+// Testcases that crash the X86 backend because they aren't implemented
+//===---------------------------------------------------------------------===//
+
+These are cases we know the X86 backend doesn't handle.  Patches are welcome
+and appreciated, because no one has signed up to implemented these yet.
+Implementing these would allow elimination of the corresponding intrinsics,
+which would be great.
+
+1) vector shifts
+2) vector comparisons
+3) vector fp<->int comparisons: PR2683, PR2684, PR2685, PR2686, PR2688
+
+