[gcc r17-3530] match: Use wi::to_wide instead of tree_to_uhwi in mul_hi/mul_lo [PR126958]

https://gcc.gnu.org/g:9f82055b86c06511ff4f19939cbd7765bf3395fe

commit r17-3530-g9f82055b86c06511ff4f19939cbd7765bf3395fe
Author: Andrea Pinski <[email protected]>
Date:   Fri Aug 21 00:09:37 2026 -0700

    match: Use wi::to_wide instead of tree_to_uhwi in mul_hi/mul_lo [PR126958]
    
    Just a small compile time optimization because wi::to_wide should have almost
    no overhead in this case when comparing against a constant and/or a generated
    mask.
    
    Pushed as obvious after a bootstrap/test on x86_64-linux-gnu.
    
            PR tree-optimization/126958
    
    gcc/ChangeLog:
    
            * match.pd (mul_hi): Use wi::to_wide instead of
            tree_fits_uhwi_p/tree_to_uhwi.
            (mul_lo): Likewise.
    
    Signed-off-by: Andrea Pinski <[email protected]>

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

diff --git a/gcc/match.pd b/gcc/match.pd
index 2615da2ba7cd..1f031e93a7ff 100644
--- a/gcc/match.pd
+++ b/gcc/match.pd
@@ -12813,8 +12813,7 @@ and,
   (if (INTEGRAL_TYPE_P (op_type)
        && TYPE_UNSIGNED (op_type)
        && TYPE_PRECISION (op_type) % 2 == 0
-       && tree_fits_uhwi_p (@0)
-       && tree_to_uhwi (@0) == TYPE_PRECISION (op_type) / 2))))
+       && wi::to_wide (@0) == TYPE_PRECISION (op_type) / 2))))
 /* Low half: op & mask.  */
 (match (mul_lo @op @0)
   (bit_and @op INTEGER_CST@0)
@@ -12822,8 +12821,7 @@ and,
   (if (INTEGRAL_TYPE_P (op_type)
        && TYPE_UNSIGNED (op_type)
        && TYPE_PRECISION (op_type) % 2 == 0
-       && tree_fits_uhwi_p (@0)
-       && (tree_to_uhwi (@0)
+       && (wi::to_wide (@0)
 	   == wi::mask (TYPE_PRECISION (op_type) / 2, false,
 			TYPE_PRECISION (op_type)))))))
 /* Cross product: high(op0) * low(op1).  */