162 lines · cpp
1#include <algorithm>2#include <cstdio>3#include <string>4 5inline int inline_ref_1 (int &value) __attribute__((always_inline));6inline int inline_ref_2 (int &value) __attribute__((always_inline));7 8int caller_ref_1 (int &value);9int caller_ref_2 (int &value);10 11int called_by_inline_ref (int &value);12 13inline void inline_trivial_1 () __attribute__((always_inline));14inline void inline_trivial_2 () __attribute__((always_inline));15 16// These three should share the same initial pc so we can test17// virtual inline stepping.18inline void caller_trivial_inline_1() __attribute__((always_inline));19inline void caller_trivial_inline_2() __attribute__((always_inline));20inline void caller_trivial_inline_3() __attribute__((always_inline));21 22void caller_trivial_1 ();23void caller_trivial_2 ();24 25void called_by_inline_trivial ();26 27static int inline_value;28 29int 30function_to_call ()31{32 return inline_value;33}34 35int36caller_ref_1 (int &value)37{38 int increment = caller_ref_2(value); // In caller_ref_1.39 value += increment; // At increment in caller_ref_1.40 return value;41}42 43int44caller_ref_2 (int &value)45{46 int increment = inline_ref_1 (value); // In caller_ref_2.47 value += increment; // At increment in caller_ref_2.48 return value;49}50 51int52called_by_inline_ref (int &value)53{54 value += 1; // In called_by_inline_ref.55 return value;56}57 58int59inline_ref_1 (int &value)60{61 int increment = inline_ref_2(value); // In inline_ref_1.62 value += increment; // At increment in inline_ref_1.63 return value;64}65 66int67inline_ref_2 (int &value)68{69 int increment = called_by_inline_ref (value); // In inline_ref_2.70 value += 1; // At increment in inline_ref_2.71 return value; 72}73 74void75caller_trivial_1 ()76{77 caller_trivial_2(); // In caller_trivial_1.78 inline_value += 1; 79}80 81void82caller_trivial_2 ()83{84 asm volatile ("nop"); inline_trivial_1 (); // In caller_trivial_2.85 inline_value += 1; // At increment in caller_trivial_2.86}87 88// When you call caller_trivial_inline_1, the inlined call-site89// should share a PC with all three of the following inlined90// functions, so we can exercise "virtual inline stepping".91void caller_trivial_inline_1() {92 caller_trivial_inline_2(); // In caller_trivial_inline_1.93 inline_value += 1;94}95 96void caller_trivial_inline_2() {97 caller_trivial_inline_3(); // In caller_trivial_inline_2.98 inline_value += 1; // After caller_trivial_inline_399}100 101void caller_trivial_inline_3() {102 inline_value += 1; // In caller_trivial_inline_3.103}104 105void106called_by_inline_trivial ()107{108 inline_value += 1; // In called_by_inline_trivial.109}110 111void112inline_trivial_1 ()113{114 asm volatile ("nop"); inline_trivial_2(); // In inline_trivial_1.115 inline_value += 1; // At increment in inline_trivial_1.116}117 118void119inline_trivial_2 ()120{121 inline_value += 1; // In inline_trivial_2.122 called_by_inline_trivial (); // At caller_by_inline_trivial in inline_trivial_2.123}124 125template<typename T> T126max_value(const T& lhs, const T& rhs)127{128 return std::max(lhs, rhs); // In max_value template129}130 131template<> std::string132max_value(const std::string& lhs, const std::string& rhs)133{134 return (lhs.size() > rhs.size()) ? lhs : rhs; // In max_value specialized135}136 137int138main (int argc, char **argv)139{140 141 inline_value = 0; // Stop here and step over to set up stepping over.142 143 inline_trivial_1 (); // At inline_trivial_1 called from main.144 145 caller_trivial_1(); // At first call of caller_trivial_1 in main.146 147 caller_trivial_1(); // At second call of caller_trivial_1 in main.148 149 caller_ref_1 (argc); // At first call of caller_ref_1 in main.150 151 caller_ref_1 (argc); // At second call of caller_ref_1 in main. 152 153 function_to_call (); // Make sure debug info for this function gets generated.154 155 max_value(123, 456); // Call max_value template156 max_value(std::string("abc"), std::string("0022")); // Call max_value specialized157 158 caller_trivial_inline_1(); // At caller_trivial_inline_1.159 160 return 0; // About to return from main.161}162