[gcc r13-827] [Ada] Adapt proof of runtime unit s-arit32

[gcc r13-827] [Ada] Adapt proof of runtime unit s-arit32

[Pierre-Marie de Rodat]

https://gcc.gnu.org/g:1ea22318caf52a98b32f8ef4e155376e7751db4b

commit r13-827-g1ea22318caf52a98b32f8ef4e155376e7751db4b
Author: Yannick Moy <moy@adacore.com>
Date:   Wed Apr 20 09:39:11 2022 +0000

    [Ada] Adapt proof of runtime unit s-arit32
    
    After changes in GNATprove, adapt proof. Simply move an assertion up
    before it is first needed here.
    
    gcc/ada/
    
            * libgnat/s-arit32.adb (Scaled_Divide32): Move assertion up.

Diff:
---
 gcc/ada/libgnat/s-arit32.adb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/ada/libgnat/s-arit32.adb b/gcc/ada/libgnat/s-arit32.adb
index baec78a3475..3d500ac8fad 100644
--- a/gcc/ada/libgnat/s-arit32.adb
+++ b/gcc/ada/libgnat/s-arit32.adb
@@ -474,6 +474,7 @@ is
 
       D := Uns64 (Xu) * Uns64 (Yu);
 
+      Lemma_Abs_Mult_Commutation (Big (X), Big (Y));
       pragma Assert (Mult = Big (D));
       Lemma_Hi_Lo (D, Hi (D), Lo (D));
       pragma Assert (Mult = Big_2xx32 * Big (Hi (D)) + Big (Lo (D)));
@@ -508,7 +509,6 @@ is
 
       Lemma_Abs_Div_Commutation (Big (X) * Big (Y), Big (Z));
       Lemma_Abs_Rem_Commutation (Big (X) * Big (Y), Big (Z));
-      Lemma_Abs_Mult_Commutation (Big (X), Big (Y));
       Lemma_Abs_Commutation (X);
       Lemma_Abs_Commutation (Y);
       Lemma_Abs_Commutation (Z);