From: "Marc Poulhiès" <poulhies@adacore.com>
To: gcc-patches@gcc.gnu.org
Cc: Steve Baird <baird@adacore.com>
Subject: [Ada] Disable lock free protected implementation if target lacks support
Date: Tue, 6 Sep 2022 09:16:02 +0200 [thread overview]
Message-ID: <20220906071602.GA1280530@poulhies-Precision-5550> (raw)
[-- Attachment #1: Type: text/plain, Size: 306 bytes --]
Do not select a lock free implementation if Targparm.Support_Atomic_Primitives
is False (which indicates that the target cannot support it).
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* sem_ch9.adb
(Allows_Lock_Free_Implementation): Return False if
Support_Atomic_Primitives is False.
[-- Attachment #2: patch.diff --]
[-- Type: text/x-diff, Size: 737 bytes --]
diff --git a/gcc/ada/sem_ch9.adb b/gcc/ada/sem_ch9.adb
--- a/gcc/ada/sem_ch9.adb
+++ b/gcc/ada/sem_ch9.adb
@@ -64,6 +64,7 @@ with Sinfo; use Sinfo;
with Sinfo.Nodes; use Sinfo.Nodes;
with Sinfo.Utils; use Sinfo.Utils;
with Style;
+with Targparm; use Targparm;
with Tbuild; use Tbuild;
with Uintp; use Uintp;
@@ -649,6 +650,10 @@ package body Sem_Ch9 is
-- Start of processing for Satisfies_Lock_Free_Requirements
begin
+ if not Support_Atomic_Primitives_On_Target then
+ return False;
+ end if;
+
-- Get the number of errors detected by the compiler so far
if Lock_Free_Given then
reply other threads:[~2022-09-06 7:16 UTC|newest]
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