diff options
Diffstat (limited to 'clang/lib/CodeGen/CGBuiltin.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CGBuiltin.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp index a126e75b19f..c911ab9fc5b 100644 --- a/clang/lib/CodeGen/CGBuiltin.cpp +++ b/clang/lib/CodeGen/CGBuiltin.cpp @@ -9222,6 +9222,26 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID, makeArrayRef(Indices, NumElts), "palignr"); } + case X86::BI__builtin_ia32_alignd128: + case X86::BI__builtin_ia32_alignd256: + case X86::BI__builtin_ia32_alignd512: + case X86::BI__builtin_ia32_alignq128: + case X86::BI__builtin_ia32_alignq256: + case X86::BI__builtin_ia32_alignq512: { + unsigned NumElts = Ops[0]->getType()->getVectorNumElements(); + unsigned ShiftVal = cast<llvm::ConstantInt>(Ops[2])->getZExtValue(); + + // Mask the shift amount to width of two vectors. + ShiftVal &= (2 * NumElts) - 1; + + uint32_t Indices[16]; + for (unsigned i = 0; i != NumElts; ++i) + Indices[i] = i + ShiftVal; + + return Builder.CreateShuffleVector(Ops[1], Ops[0], + makeArrayRef(Indices, NumElts), + "valign"); + } case X86::BI__builtin_ia32_vperm2f128_pd256: case X86::BI__builtin_ia32_vperm2f128_ps256: |
