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[PATCH v3 03/13] compiler.h: remove GCC < 3 __builtin_expect fallback
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From: |
marcandre . lureau |
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Subject: |
[PATCH v3 03/13] compiler.h: remove GCC < 3 __builtin_expect fallback |
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Date: |
Thu, 10 Dec 2020 17:47:42 +0400 |
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Since commit efc6c07 ("configure: Add a test for the minimum compiler
version"), QEMU explicitely depends on GCC >= 4.8.
(clang >= 3.4 advertizes itself as GCC >= 4.2 compatible and supports
__builtin_expect too)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
include/qemu/compiler.h | 4 ----
1 file changed, 4 deletions(-)
diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h
index c76281f354..226ead6c90 100644
--- a/include/qemu/compiler.h
+++ b/include/qemu/compiler.h
@@ -44,10 +44,6 @@
#endif
#ifndef likely
-#if __GNUC__ < 3
-#define __builtin_expect(x, n) (x)
-#endif
-
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#endif
--
2.29.0
- [PATCH v3 00/13] Remove GCC < 4.8 checks, marcandre . lureau, 2020/12/10
- [PATCH v3 04/13] qemu-plugin.h: remove GCC < 4, marcandre . lureau, 2020/12/10
- [PATCH v3 05/13] tests: remove GCC < 4 fallbacks, marcandre . lureau, 2020/12/10
- [PATCH v3 06/13] virtiofsd: replace _Static_assert with QEMU_BUILD_BUG_ON, marcandre . lureau, 2020/12/10
- [PATCH v3 07/13] compiler.h: explicit case for Clang printf attribute, marcandre . lureau, 2020/12/10