================
@@ -1939,9 +1939,11 @@ let TargetPrefix = "nvvm" in {
//
foreach a_type = ["s", "u"] in {
foreach b_type = ["s", "u"] in {
- def int_nvvm_idp4a_ # a_type # _ # b_type :
+ def int_nvvm_idp4a_ # a_type # _ # b_type : NVVMBuiltin,
PureIntrinsic<[llvm_i32_ty],
[llvm_i32_ty, llvm_i32_ty, llvm_i32_ty]>;
+ // The i1 operand selects the high (true) or low (false) half of the
+ // second operand. Exposed to clang as separate _lo/_hi builtins.
----------------
ilya-biryukov wrote:
Removed it from here.
https://github.com/llvm/llvm-project/pull/233434
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