Add new built-in operations for vmull and vmull_n
so they can be implemented without requiring clang builtins.
Radar 8446238.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121173 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/NeonEmitter.cpp b/utils/TableGen/NeonEmitter.cpp
index 3752db0..7fdc1ca 100644
--- a/utils/TableGen/NeonEmitter.cpp
+++ b/utils/TableGen/NeonEmitter.cpp
@@ -508,6 +508,15 @@
return s;
}
+// Use the vmovl builtin to sign-extend or zero-extend a vector.
+static std::string Extend(const std::string &proto, StringRef typestr,
+ const std::string &a) {
+ std::string s;
+ s = MangleName("vmovl", typestr, ClassS);
+ s += "(" + a + ")";
+ return s;
+}
+
static std::string Duplicate(unsigned nElts, StringRef typestr,
const std::string &a) {
std::string s;
@@ -587,6 +596,15 @@
case OpMul:
s += "__a * __b;";
break;
+ case OpMullN:
+ s += Extend(proto, typestr, "__a") + " * " +
+ Extend(proto, typestr,
+ Duplicate(nElts << (int)quad, typestr, "__b")) + ";";
+ break;
+ case OpMull:
+ s += Extend(proto, typestr, "__a") + " * " +
+ Extend(proto, typestr, "__b") + ";";
+ break;
case OpMlaN:
s += "__a + (__b * " + Duplicate(nElts, typestr, "__c") + ");";
break;