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-rw-r--r--gcc/cp/call.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/cp/call.c b/gcc/cp/call.c
index e493a7947be..df87d8f4d8d 100644
--- a/gcc/cp/call.c
+++ b/gcc/cp/call.c
@@ -7177,6 +7177,33 @@ build_cxx_call (tree fn, int nargs, tree *argarray,
&& !check_builtin_function_arguments (fndecl, nargs, argarray))
return error_mark_node;
+ /* If it is a built-in array notation function, then the return type of
+ the function is the element type of the array passed in as array
+ notation (i.e. the first parameter of the function). */
+ if (flag_enable_cilkplus && TREE_CODE (fn) == CALL_EXPR)
+ {
+ enum built_in_function bif =
+ is_cilkplus_reduce_builtin (CALL_EXPR_FN (fn));
+ if (bif == BUILT_IN_CILKPLUS_SEC_REDUCE_ADD
+ || bif == BUILT_IN_CILKPLUS_SEC_REDUCE_MUL
+ || bif == BUILT_IN_CILKPLUS_SEC_REDUCE_MAX
+ || bif == BUILT_IN_CILKPLUS_SEC_REDUCE_MIN
+ || bif == BUILT_IN_CILKPLUS_SEC_REDUCE
+ || bif == BUILT_IN_CILKPLUS_SEC_REDUCE_MUTATING)
+ {
+ /* for bif == BUILT_IN_CILKPLUS_SEC_REDUCE_ALL_ZERO or
+ BUILT_IN_CILKPLUS_SEC_REDUCE_ANY_ZERO or
+ BUILT_IN_CILKPLUS_SEC_REDUCE_ANY_NONZERO or
+ BUILT_IN_CILKPLUS_SEC_REDUCE_ALL_NONZERO or
+ BUILT_IN_CILKPLUS_SEC_REDUCE_MIN_IND or
+ BUILT_IN_CILKPLUS_SEC_REDUCE_MAX_IND
+ The pre-defined return-type is the correct one. */
+ tree array_ntn = CALL_EXPR_ARG (fn, 0);
+ TREE_TYPE (fn) = TREE_TYPE (array_ntn);
+ return fn;
+ }
+ }
+
/* Some built-in function calls will be evaluated at compile-time in
fold (). Set optimize to 1 when folding __builtin_constant_p inside
a constexpr function so that fold_builtin_1 doesn't fold it to 0. */
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