Add target implementations for the X86 builtins:
__builtin_ia32_vec_init_v8qi
__builtin_ia32_vec_init_v4hi
__builtin_ia32_vec_init_v2si
They are lowered to bitcasts. (These are all ready tested by the gcc testsuite.)
<rdar://problem/8529957>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116147 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 7213ee3..6d669c2 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -1888,9 +1888,35 @@
}
}
+llvm::Value *CodeGenFunction::
+BuildVector(const llvm::SmallVectorImpl<llvm::Value*> &Ops) {
+ assert((Ops.size() & (Ops.size() - 1)) == 0 &&
+ "Not a power-of-two sized vector!");
+ bool AllConstants = true;
+ for (unsigned i = 0, e = Ops.size(); i != e && AllConstants; ++i)
+ AllConstants &= isa<Constant>(Ops[i]);
+
+ // If this is a constant vector, create a ConstantVector.
+ if (AllConstants) {
+ std::vector<llvm::Constant*> CstOps;
+ for (unsigned i = 0, e = Ops.size(); i != e; ++i)
+ CstOps.push_back(cast<Constant>(Ops[i]));
+ return llvm::ConstantVector::get(CstOps);
+ }
+
+ // Otherwise, insertelement the values to build the vector.
+ Value *Result =
+ llvm::UndefValue::get(llvm::VectorType::get(Ops[0]->getType(), Ops.size()));
+
+ for (unsigned i = 0, e = Ops.size(); i != e; ++i)
+ Result = Builder.CreateInsertElement(Result, Ops[i],
+ llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), i));
+
+ return Result;
+}
+
Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
const CallExpr *E) {
-
llvm::SmallVector<Value*, 4> Ops;
// Find out if any arguments are required to be integer constant expressions.
@@ -1971,6 +1997,11 @@
llvm::Function *F = CGM.getIntrinsic(ID);
return Builder.CreateCall(F, &Ops[0], &Ops[0] + Ops.size(), name);
}
+ case X86::BI__builtin_ia32_vec_init_v8qi:
+ case X86::BI__builtin_ia32_vec_init_v4hi:
+ case X86::BI__builtin_ia32_vec_init_v2si:
+ return Builder.CreateBitCast(BuildVector(Ops),
+ llvm::Type::getX86_MMXTy(VMContext));
case X86::BI__builtin_ia32_pslldi:
case X86::BI__builtin_ia32_psllqi:
case X86::BI__builtin_ia32_psllwi: