ARM assembly parsing and encoding for PKHBT and PKHTB instructions.
llvm-svn: 135682
diff --git a/llvm/lib/Target/ARM/ARMInstrInfo.td b/llvm/lib/Target/ARM/ARMInstrInfo.td
index 739a733..5585de8 100644
--- a/llvm/lib/Target/ARM/ARMInstrInfo.td
+++ b/llvm/lib/Target/ARM/ARMInstrInfo.td
@@ -4067,3 +4067,9 @@
def : MnemonicAlias<"stmia", "stm">;
def : MnemonicAlias<"stmea", "stm">;
+// PKHBT/PKHTB with default shift amount. PKHTB is equivalent to PKHBT when the
+// shift amount is zero (i.e., unspecified).
+def : InstAlias<"pkhbt${p} $Rd, $Rn, $Rm",
+ (PKHBT GPR:$Rd, GPR:$Rn, GPR:$Rm, 0, pred:$p)>;
+def : InstAlias<"pkhtb${p} $Rd, $Rn, $Rm",
+ (PKHBT GPR:$Rd, GPR:$Rn, GPR:$Rm, 0, pred:$p)>;