Add shuffle decode support for VPERMQ/VPERMPD.
llvm-svn: 156265
diff --git a/llvm/lib/Target/X86/InstPrinter/X86InstComments.cpp b/llvm/lib/Target/X86/InstPrinter/X86InstComments.cpp
index dbee886..64ac5e6 100644
--- a/llvm/lib/Target/X86/InstPrinter/X86InstComments.cpp
+++ b/llvm/lib/Target/X86/InstPrinter/X86InstComments.cpp
@@ -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;
}
diff --git a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
index f0d9467..69d9439 100644
--- a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
+++ b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp
@@ -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
diff --git a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.h b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.h
index 14545e7..a039b70 100644
--- a/llvm/lib/Target/X86/Utils/X86ShuffleDecode.h
+++ b/llvm/lib/Target/X86/Utils/X86ShuffleDecode.h
@@ -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