[gcc(refs/vendors/riscv/heads/gcc-15-with-riscv-opts)] RISC-V: Ignore non-types in builtin function hash.

[Jeff Law]

https://gcc.gnu.org/g:aa43dac15a1ba81cb8b97e2d494efda5bef21eb6

commit aa43dac15a1ba81cb8b97e2d494efda5bef21eb6
Author: Robin Dapp <rdapp@ventanamicro.com>
Date:   Tue Jul 8 11:17:41 2025 +0200

    RISC-V: Ignore non-types in builtin function hash.
    
    If a user passes a string that doesn't represent a variable we still try
    to compute a hash for its type.  Its tree does not represent a type but
    just an exceptional, though.  This patch just ignores it, leaving the
    error to the checking code later.
    
            PR target/113829
    
    gcc/ChangeLog:
    
            * config/riscv/riscv-vector-builtins.cc (registered_function::overloaded_hash):
            Skip non-type arguments.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/riscv/rvv/base/pr113829.c: New test.
    
    (cherry picked from commit 6968656d631c6666081889f30c2247bf255e0831)

Diff:
---
 gcc/config/riscv/riscv-vector-builtins.cc          |  6 ++++++
 gcc/testsuite/gcc.target/riscv/rvv/base/pr113829.c | 10 ++++++++++
 2 files changed, 16 insertions(+)

diff --git a/gcc/config/riscv/riscv-vector-builtins.cc b/gcc/config/riscv/riscv-vector-builtins.cc
index 13e951c9527f..14ba27f6506c 100644
--- a/gcc/config/riscv/riscv-vector-builtins.cc
+++ b/gcc/config/riscv/riscv-vector-builtins.cc
@@ -5012,6 +5012,12 @@ registered_function::overloaded_hash () const
   for (unsigned int i = 0; i < argument_types.length (); i++)
     {
       type = argument_types[i];
+
+      /* If we're passed something entirely unreasonable, just ignore here.
+	 We'll warn later anyway.  */
+      if (TREE_CODE_CLASS (TREE_CODE (type)) != tcc_type)
+	continue;
+
       unsigned_p = POINTER_TYPE_P (type) ? TYPE_UNSIGNED (TREE_TYPE (type))
 					 : TYPE_UNSIGNED (type);
       mode_p = POINTER_TYPE_P (type) ? TYPE_MODE (TREE_TYPE (type))
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/pr113829.c b/gcc/testsuite/gcc.target/riscv/rvv/base/pr113829.c
new file mode 100644
index 000000000000..48c291a92026
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/base/pr113829.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=rv64gcv -mabi=lp64d" } */
+
+#pragma riscv intrinsic "vector"
+void
+foo (void)
+{
+  __riscv_vfredosum_tu (X); /* { dg-error "undeclared" } */
+  /* { dg-error "too many arguments" "" { target *-*-* } .-1 } */
+}