[llvm-commits] [llvm] r86469 - /llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td

[Anton Korobeynikov]

Author: asl
Date: Sun Nov  8 09:32:28 2009
New Revision: 86469

URL: http://llvm.org/viewvc/llvm-project?rev=86469&view=rev
Log:
Some nice peephole patterns. Based on patch by Brian Lucas!

Modified:
    llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td

Modified: llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td?rev=86469&r1=86468&r2=86469&view=diff

==============================================================================
--- llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td (original)
+++ llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td Sun Nov  8 09:32:28 2009
@@ -690,6 +690,10 @@
 
 } // Defs = [SRW]
 
+def ZEXT16r : Pseudo<(outs GR16:$dst), (ins GR16:$src),
+                     "mov.b\t{$src, $dst}",
+                     [(set GR16:$dst, (zext (trunc GR16:$src)))]>;
+
 def SWPB16r : Pseudo<(outs GR16:$dst), (ins GR16:$src),
                      "swpb\t$dst",
                      [(set GR16:$dst, (bswap GR16:$src))]>;
@@ -899,3 +903,6 @@
           (SUB8mr addr:$dst, GR8:$src)>;
 def : Pat<(store (subc (load addr:$dst), (i8 (load addr:$src))), addr:$dst),
           (SUB8mm addr:$dst, addr:$src)>;
+
+// peephole patterns
+def : Pat<(and GR16:$src, 255), (ZEXT16r GR16:$src)>;