diff options
| author |  xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2009-11-10 14:58:33 +0000 |
|---|---|---|
| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2009-11-10 14:58:33 +0000 |
| commit | 8ccc7f2f597aff2c8590c4e62552fb53406ad0f8 (patch) | |
| tree | a553844ce1b6960ae5240f65593c085be733e3b2 /backend/Lineartyping.v | |
| parent | 74487f079dd56663f97f9731cea328931857495c (diff) | |
More realistic treatment of jump tables: show the absence of overflow when accessing the table
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1172 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'backend/Lineartyping.v')
| -rw-r--r-- | backend/Lineartyping.v | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/backend/Lineartyping.v b/backend/Lineartyping.v index ba4952b..1fe7737 100644 --- a/backend/Lineartyping.v +++ b/backend/Lineartyping.v @@ -15,6 +15,7 @@ Require Import Coqlib. Require Import Maps. Require Import AST. +Require Import Integers. Require Import Op. Require Import RTL. Require Import Locations. @@ -98,6 +99,7 @@ Inductive wt_instr : instruction -> Prop := | wt_Ljumptable: forall arg tbl, mreg_type arg = Tint -> + list_length_z tbl * 4 <= Int.max_signed -> wt_instr (Ljumptable arg tbl) | wt_Lreturn: wt_instr (Lreturn). |