chooses the best available option: 1. Exact/identity match 2. Trivial conversion 3. Promotion 4. Promotion + trivial conversion 5. Standard conversion 6. Standard conversion + trivial conversion 1)Promotions (Rank 2) 62 The following standard conversions count as promotions: • Integral promotion • unsigned short ➜ unsigned int or int (depending on your platform) • short ➜ int • char ➜ int point promotion • float ➜ doublePromotions (Rank 2) 63 void f( int ); // (1) void f( double ); // (2) int main() { short v = 42; f( v ); } // Calls (1) (integral promotion, rank

put(int c, FILE *f);  In each case, the compiler promotes charto intto achieve the match.  That promotion may generate additional code that executes at run time. 15 Best Matches and Ambiguities  In “cheap” array-to-pointer conversion qualification conversion etc. integral promotion Promotion floating-point promotion integral conversion Conversion “expensive” floating-point conversion pointer “cheap” array-to-pointer conversion qualification conversion etc. integral promotion Promotion floating-point promotion integral conversion Conversion “expensive” floating-point conversion pointer

Resolution ● Standard Conversion Categories ○ numeric promotions (4) ■ integral promotion ■ floating-point promotion ○ conversions (5) ■ integral conversion ■ floating-point conversion ■ floating–integral ambiguous ( compile error ) } 28Overload Resolution ● Numeric Promotions (category 4) ○ integral promotion ■ short to int ■ unsigned short to unsigned int or int ■ bool to int (0 or 1) ■ char to int or or unsigned int ■ a few more however it must be defined in the standard ○ floating point promotion ■ float to double 29Overload Resolution ● Example 3 ○ integral conversion (category 5) ■ integral

DATA PROMOTION FROM COMPILE-TIME TO RUNTIME? DATA PROMOTION FROM COMPILE-TIME TO RUNTIME? 9 . 3JIT IN THE COMPILER JIT IN THE COMPILER DATA PROMOTION FROM COMPILE-TIME TO RUNTIME? DATA PROMOTION FROM COMPILATION TIME VARIABILITY? 9 . 3JIT IN THE COMPILER JIT IN THE COMPILER DATA PROMOTION FROM COMPILE-TIME TO RUNTIME? DATA PROMOTION FROM COMPILE-TIME TO RUNTIME? COMPILATION TIME VARIABILITY? COMPILATION

，根据补码的 规则他是一个正数 128 。 实验：自动类型提升（ type promotion ） • 一个较小类型的 short 和较大类型的 int 相加会得到什么类型？会得到 int 类型。 • 结论：小类型和大类型做数学运算（ +-*/% ）会得到两个类型中的大类型。 实验：自动类型提升（ type promotion ） • 对 unsigned 类型也是同理的。 • unsigned unsigned short = unsigned int 实验：自动类型提升（ type promotion ） • 如果两边有一边是 unsigned 的但是大小不等，则还是选择较大类型。 • unsigned short + int = int 实验：自动类型提升（ type promotion ） • 如果两边有一边是 unsigned 的但是大小相等，则结果是 unsigned 的。

com/in/alexdathskovsky • what will the result be if we call add_uint8(255u, 1u)?SURPRISE AGAIN: INTEGER PROMOTION Alex Dathskovsky | alex.dathskovsky@speedata.io | www.linkedin.com/in/alexdathskovsky 256SIGNED the result if we will call my_add(uint64_t(1), int64_t(-2)) ?SURPRISE AGAIN: MORE INTEGER PROMOTION Alex Dathskovsky | alex.dathskovsky@speedata.io | www.linkedin.com/in/alexdathskovsky 184467

result in losing the path of the artifact in the BuildInfo in Artifactory and also fail in the promotion process. We are currently working along with the Artifactory team to solve those problems. Until the specified reference will NOT be retrieved. Useful together with ‘conan copy’ to automate the promotion of packages to a different user/channel. Only if a reference is specified, it will download all result in losing the path of the artifact in the BuildInfo in Artifactory and also fail in the promotion process. We are currently working along with the Artifactory team to solve those problems. Until

result in losing the path of the artifact in the BuildInfo in Artifactory and also fail in the promotion process. We are currently working along with the Artifactory team to solve those problems. Until the specified reference will NOT be retrieved. Useful together with ‘conan copy’ to automate the promotion of packages to a different user/channel. Only if a reference is specified, it will download all result in losing the path of the artifact in the BuildInfo in Artifactory and also fail in the promotion process. We are currently working along with the Artifactory team to solve those problems. Until

result in losing the path of the artifact in the BuildInfo in Artifactory and also fail in the promotion process. We are currently working along with the Artifactory team to solve those problems. Until the specified reference will NOT be retrieved. Useful together with ‘conan copy’ to automate the promotion of packages to a different user/channel. Only if a reference is specified, it will download all result in losing the path of the artifact in the BuildInfo in Artifactory and also fail in the promotion process. We are currently working along with the Artifactory team to solve those problems. Until

result in losing the path of the artifact in the BuildInfo in Artifactory and also fail in the promotion process. We are currently working along with the Artifactory team to solve those problems. Until the specified reference will NOT be retrieved. Useful together with ‘conan copy’ to automate the promotion of packages to a different user/channel. Only if a reference is specified, it will download all result in losing the path of the artifact in the BuildInfo in Artifactory and also fail in the promotion process. We are currently working along with the Artifactory team to solve those problems. Until