[gcc r17-3168] hwint: Simplify add_hwi/mul_hwi.

https://gcc.gnu.org/g:7e0bb48cbb2654816ce2714de5b644f4d965d3db

commit r17-3168-g7e0bb48cbb2654816ce2714de5b644f4d965d3db
Author: Kael Andrew Alonzo Franco <[email protected]>
Date:   Sun Aug 9 17:54:47 2026 -0400

    hwint: Simplify add_hwi/mul_hwi.
    
    This combines duplicated C++ code so any C++ compiler compiles this
    header file faster.
    
    Bootstrapped and regtested on x86_64-pc-linux-gnu.
    
    gcc/ChangeLog:
    
            * hwint.h (add_hwi, mul_hwi): Combine return result.
    
    Signed-off-by: Kael Andrew Franco <[email protected]>

Diff:
---
 gcc/hwint.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/gcc/hwint.h b/gcc/hwint.h
index 454ee0efdcb0..ebb4253e89db 100644
--- a/gcc/hwint.h
+++ b/gcc/hwint.h
@@ -365,12 +365,11 @@ add_hwi (HOST_WIDE_INT a, HOST_WIDE_INT b, bool *overflow)
     *overflow = true;
   else
     *overflow = false;
-  return result;
 #else
   HOST_WIDE_INT result;
   *overflow = __builtin_add_overflow (a, b, &result);
-  return result;
 #endif
+  return result;
 }
 
 /* Compute the product of signed A and B and indicate in *OVERFLOW whether
@@ -386,12 +385,11 @@ mul_hwi (HOST_WIDE_INT a, HOST_WIDE_INT b, bool *overflow)
     *overflow = true;
   else
     *overflow = false;
-  return result;
 #else
   HOST_WIDE_INT result;
   *overflow = __builtin_mul_overflow (a, b, &result);
-  return result;
 #endif
+  return result;
 }
 
 /* Compute the saturated sum of signed A and B, i.e. upon overflow clamp