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compiler.h: remove GCC < 3 __builtin_expect fallback

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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)

Backports 44cb2c9fe5dd2aa8b44eb42f34ec786ba21a2731
This commit is contained in:
Marc-André Lureau 2021-03-03 19:15:44 -05:00 committed by Lioncash
parent 4a0f9846b2
commit 782e912c98
1 changed files with 0 additions and 4 deletions
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4
qemu/include/qemu/compiler.h
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@ -194,10 +194,6 @@ static union MSVC_FLOAT_HACK __NAN = {{0x00, 0x00, 0xC0, 0x7F}};
#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