ARM NEON fix alignment encoding for VST2 w/ writeback.

Add tests for w/ writeback instruction parsing and encoding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146594 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/Target/ARM/ARMInstrNEON.td b/lib/Target/ARM/ARMInstrNEON.td
index ff647deaa4..1caadd694d 100644
--- a/lib/Target/ARM/ARMInstrNEON.td
+++ b/lib/Target/ARM/ARMInstrNEON.td
@@ -1530,7 +1530,7 @@ multiclass VST2DWB<bits<4> op11_8, bits<4> op7_4, string Dt,
                      "vst2", Dt, "$Vd, $Rn!",
                      "$Rn.addr = $wb", []> {
     let Rm = 0b1101; // NLdSt will assign to the right encoding bits.
-    let Inst{4} = Rn{4};
+    let Inst{5-4} = Rn{5-4};
     let DecoderMethod = "DecodeVSTInstruction";
     let AsmMatchConverter = "cvtVSTwbFixed";
   }
@@ -1538,7 +1538,7 @@ multiclass VST2DWB<bits<4> op11_8, bits<4> op7_4, string Dt,
                         (ins addrmode6:$Rn, rGPR:$Rm, VdTy:$Vd), IIC_VLD1u,
                         "vst2", Dt, "$Vd, $Rn, $Rm",
                         "$Rn.addr = $wb", []> {
-    let Inst{4} = Rn{4};
+    let Inst{5-4} = Rn{5-4};
     let DecoderMethod = "DecodeVSTInstruction";
     let AsmMatchConverter = "cvtVSTwbRegister";
   }
@@ -1549,7 +1549,7 @@ multiclass VST2QWB<bits<4> op7_4, string Dt> {
                      "vst2", Dt, "$Vd, $Rn!",
                      "$Rn.addr = $wb", []> {
     let Rm = 0b1101; // NLdSt will assign to the right encoding bits.
-    let Inst{4} = Rn{4};
+    let Inst{5-4} = Rn{5-4};
     let DecoderMethod = "DecodeVSTInstruction";
     let AsmMatchConverter = "cvtVSTwbFixed";
   }
@@ -1558,7 +1558,7 @@ multiclass VST2QWB<bits<4> op7_4, string Dt> {
                         IIC_VLD1u,
                         "vst2", Dt, "$Vd, $Rn, $Rm",
                         "$Rn.addr = $wb", []> {
-    let Inst{4} = Rn{4};
+    let Inst{5-4} = Rn{5-4};
     let DecoderMethod = "DecodeVSTInstruction";
     let AsmMatchConverter = "cvtVSTwbRegister";
   }