[llvm-commits] [llvm] r156265 - in /llvm/trunk/lib/Target/X86: InstPrinter/X86InstComments.cpp Utils/X86ShuffleDecode.cpp Utils/X86ShuffleDecode.h

[Craig Topper]

Author: ctopper
Date: Sun May  6 13:44:02 2012
New Revision: 156265

URL: http://llvm.org/viewvc/llvm-project?rev=156265&view=rev
Log:
Add shuffle decode support for VPERMQ/VPERMPD.

Modified:
    llvm/trunk/lib/Target/X86/InstPrinter/X86InstComments.cpp
    llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.cpp
    llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.h

Modified: llvm/trunk/lib/Target/X86/InstPrinter/X86InstComments.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/InstPrinter/X86InstComments.cpp?rev=156265&r1=156264&r2=156265&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/InstPrinter/X86InstComments.cpp (original)
+++ llvm/trunk/lib/Target/X86/InstPrinter/X86InstComments.cpp Sun May  6 13:44:02 2012
@@ -507,6 +507,16 @@
     Src1Name = getRegName(MI->getOperand(1).getReg());
     DestName = getRegName(MI->getOperand(0).getReg());
     break;
+  case X86::VPERMQYri:
+  case X86::VPERMPDYri:
+    Src1Name = getRegName(MI->getOperand(1).getReg());
+    // FALL THROUGH.
+  case X86::VPERMQYmi:
+  case X86::VPERMPDYmi:
+    DecodeVPERMMask(MI->getOperand(MI->getNumOperands()-1).getImm(),
+                    ShuffleMask);
+    DestName = getRegName(MI->getOperand(0).getReg());
+    break;
   }
 
 

Modified: llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.cpp?rev=156265&r1=156264&r2=156265&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.cpp (original)
+++ llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.cpp Sun May  6 13:44:02 2012
@@ -192,4 +192,12 @@
     ShuffleMask.push_back(i);
 }
 
+/// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
+/// No VT provided since it only works on 256-bit, 4 element vectors.
+void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask) {
+  for (unsigned i = 0; i != 4; ++i) {
+    ShuffleMask.push_back((Imm >> (2*i)) & 3);
+  }
+}
+
 } // llvm namespace

Modified: llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.h?rev=156265&r1=156264&r2=156265&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.h (original)
+++ llvm/trunk/lib/Target/X86/Utils/X86ShuffleDecode.h Sun May  6 13:44:02 2012
@@ -60,6 +60,10 @@
 void DecodeVPERM2X128Mask(EVT VT, unsigned Imm,
                           SmallVectorImpl<int> &ShuffleMask);
 
+/// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
+/// No VT provided since it only works on 256-bit, 4 element vectors.
+void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
+
 } // llvm namespace
 
 #endif