* [Ada] Adapt proof of runtime unit s-arit32
@ 2022-05-30 8:32 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2022-05-30 8:32 UTC (permalink / raw)
To: gcc-patches; +Cc: Yannick Moy
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After changes in GNATprove, adapt proof. Simply move an assertion up
before it is first needed here.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* libgnat/s-arit32.adb (Scaled_Divide32): Move assertion up.
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diff --git a/gcc/ada/libgnat/s-arit32.adb b/gcc/ada/libgnat/s-arit32.adb
--- 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);
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2022-05-30 8:32 [Ada] Adapt proof of runtime unit s-arit32 Pierre-Marie de Rodat
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