[X86] Add builtins for vpermilps/pd instructions to enable target feature checking.
llvm-svn: 334256
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 0002058..4331005 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -9256,6 +9256,33 @@
makeArrayRef(Indices, NumElts),
"blend");
}
+ case X86::BI__builtin_ia32_vpermilpd:
+ case X86::BI__builtin_ia32_vpermilps:
+ case X86::BI__builtin_ia32_vpermilpd256:
+ case X86::BI__builtin_ia32_vpermilps256:
+ case X86::BI__builtin_ia32_vpermilpd512:
+ case X86::BI__builtin_ia32_vpermilps512: {
+ uint32_t Imm = cast<llvm::ConstantInt>(Ops[1])->getZExtValue();
+ llvm::Type *Ty = Ops[0]->getType();
+ unsigned NumElts = Ty->getVectorNumElements();
+ unsigned NumLanes = Ty->getPrimitiveSizeInBits() / 128;
+ unsigned NumLaneElts = NumElts / NumLanes;
+
+ // Splat the 8-bits of immediate 4 times to help the loop wrap around.
+ Imm = (Imm & 0xff) * 0x01010101;
+
+ uint32_t Indices[16];
+ for (unsigned l = 0; l != NumElts; l += NumLaneElts) {
+ for (unsigned i = 0; i != NumLaneElts; ++i) {
+ Indices[i + l] = (Imm % NumLaneElts) + l;
+ Imm /= NumLaneElts;
+ }
+ }
+
+ return Builder.CreateShuffleVector(Ops[0], UndefValue::get(Ty),
+ makeArrayRef(Indices, NumElts),
+ "permil");
+ }
case X86::BI__builtin_ia32_palignr128:
case X86::BI__builtin_ia32_palignr256:
case X86::BI__builtin_ia32_palignr512: {