[X86] Add builtins for shufps and shufpd to enable target feature and immediate range checking.
llvm-svn: 334266
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 741f36b..9d9a942 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -9403,6 +9403,36 @@
makeArrayRef(Indices, NumElts),
"permil");
}
+ case X86::BI__builtin_ia32_shufpd:
+ case X86::BI__builtin_ia32_shufpd256:
+ case X86::BI__builtin_ia32_shufpd512:
+ case X86::BI__builtin_ia32_shufps:
+ case X86::BI__builtin_ia32_shufps256:
+ case X86::BI__builtin_ia32_shufps512: {
+ uint32_t Imm = cast<llvm::ConstantInt>(Ops[2])->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) {
+ unsigned Index = Imm % NumLaneElts;
+ Imm /= NumLaneElts;
+ if (i >= (NumLaneElts / 2))
+ Index += NumElts;
+ Indices[l + i] = l + Index;
+ }
+ }
+
+ return Builder.CreateShuffleVector(Ops[0], Ops[1],
+ makeArrayRef(Indices, NumElts),
+ "shufp");
+ }
case X86::BI__builtin_ia32_palignr128:
case X86::BI__builtin_ia32_palignr256:
case X86::BI__builtin_ia32_palignr512: {