diff options
| author | Thomas Huth <thuth@redhat.com> | 2022-07-21 09:48:09 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2022-08-04 13:49:47 +0200 |
| commit | 21d4e557e2fd0cb7f10b632b35f51146a1b6d892 (patch) | |
| tree | be34257d4acfeebe952a28316957f0ed4353fadd | |
| parent | 1e2dd311491565a58b30f29e71c6e429fc8e7e84 (diff) | |
include/qemu/host-utils.h: Simplify the compiler check in mulu128()
We currently require at least GCC 7.4 or Clang 6.0 for compiling QEMU.
GCC has __builtin_mul_overflow since version 5 already, and Clang 6.0
also provides this built-in function (see its documentation on this page:
https://releases.llvm.org/6.0.0/tools/clang/docs/LanguageExtensions.html ).
So we can simplify the #if statement here.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220721074809.1513357-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
| -rw-r--r-- | include/qemu/host-utils.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/include/qemu/host-utils.h b/include/qemu/host-utils.h index 29f3a99878..88d476161c 100644 --- a/include/qemu/host-utils.h +++ b/include/qemu/host-utils.h @@ -533,8 +533,7 @@ static inline bool umul64_overflow(uint64_t x, uint64_t y, uint64_t *ret) */ static inline bool mulu128(uint64_t *plow, uint64_t *phigh, uint64_t factor) { -#if defined(CONFIG_INT128) && \ - (__has_builtin(__builtin_mul_overflow) || __GNUC__ >= 5) +#if defined(CONFIG_INT128) bool res; __uint128_t r; __uint128_t f = ((__uint128_t)*phigh << 64) | *plow; |