Add an alternative rev16 pattern. We should figure out a better way to handle these...

[oota-llvm.git] / lib / Target / ARM / ARMInstrThumb2.td

diff --git a/lib/Target/ARM/ARMInstrThumb2.td b/lib/Target/ARM/ARMInstrThumb2.td
index 53b9cec6acddb9bfa20775dfb7eea3332150580c..cd077a86e99e22b87ec3805a09f246d1eaa3e119 100644 (file)
--- a/lib/Target/ARM/ARMInstrThumb2.td
+++ b/lib/Target/ARM/ARMInstrThumb2.td
@@ -2593,6 +2593,12 @@ def t2REV16 : T2I_misc<0b01, 0b01, (outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iUNAr,
                             (or (and (srl rGPR:$Rm, (i32 8)), 0xFF0000),
                                (and (shl rGPR:$Rm, (i32 8)), 0xFF000000)))))]>;
 
+def : T2Pat<(or (or (or (and (srl rGPR:$Rm, (i32 8)), 0xFF0000),
+                        (and (shl rGPR:$Rm, (i32 8)), 0xFF000000)),
+                    (and (srl rGPR:$Rm, (i32 8)), 0xFF)),
+                (and (shl rGPR:$Rm, (i32 8)), 0xFF00)),
+            (t2REV16 rGPR:$Rm)>;
+
 def t2REVSH : T2I_misc<0b01, 0b11, (outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iUNAr,
                        "revsh", ".w\t$Rd, $Rm",
                  [(set rGPR:$Rd,