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[PATCH] arm/div64: Drop do_div() macro for GCC version < 4
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Michal Orzel <michal.orzel@xxxxxxx>
- Date: Tue, 3 Sep 2024 14:48:34 +0200
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- Cc: Michal Orzel <michal.orzel@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Delivery-date: Tue, 03 Sep 2024 12:48:53 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
As stated in README, the minimum supported GCC version for arm32 is
4.9, therefore drop the custom do_div() macro in favor of using the
optimized version.
Suggested-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
---
To be merged after:
https://lore.kernel.org/xen-devel/20240902100355.3032079-2-andrew.cooper3@xxxxxxxxxx
---
xen/arch/arm/include/asm/div64.h | 16 ----------------
1 file changed, 16 deletions(-)
diff --git a/xen/arch/arm/include/asm/div64.h b/xen/arch/arm/include/asm/div64.h
index da1f1fcbd503..8fe17f0ff27c 100644
--- a/xen/arch/arm/include/asm/div64.h
+++ b/xen/arch/arm/include/asm/div64.h
@@ -54,20 +54,6 @@
__rem; \
})
-#if __GNUC__ < 4
-
-/*
- * gcc versions earlier than 4.0 are simply too problematic for the
- * optimized implementation below. First there is gcc PR 15089 that
- * tend to trig on more complex constructs, spurious .global __udivsi3
- * are inserted even if none of those symbols are referenced in the
- * generated code, and those gcc versions are not able to do constant
- * propagation on long long values anyway.
- */
-#define do_div(n, base) __do_div_asm(n, base)
-
-#elif __GNUC__ >= 4
-
#include <xen/bug.h>
/*
@@ -217,8 +203,6 @@
__r; \
})
-#endif /* GCC version */
-
#endif /* BITS_PER_LONG */
#endif
--
2.25.1
|
