| // Test that instrumentation based profiling sets function attributes correctly. |
| |
| // RUN: llvm-profdata merge %S/Inputs/c-attributes.proftext -o %t.profdata |
| // RUN: %clang %s -o - -mllvm -disable-llvm-optzns -emit-llvm -S -fprofile-instr-use=%t.profdata | FileCheck %s |
| |
| extern int atoi(const char *); |
| |
| // CHECK: hot_100_percent(i32{{.*}}%i) [[HOT:#[0-9]+]] |
| void hot_100_percent(int i) { |
| while (i > 0) |
| i--; |
| } |
| |
| // CHECK: hot_40_percent(i32{{.*}}%i) [[HOT]] |
| void hot_40_percent(int i) { |
| while (i > 0) |
| i--; |
| } |
| |
| // CHECK: normal_func(i32{{.*}}%i) [[NORMAL:#[0-9]+]] |
| void normal_func(int i) { |
| while (i > 0) |
| i--; |
| } |
| |
| // CHECK: cold_func(i32{{.*}}%i) [[COLD:#[0-9]+]] |
| void cold_func(int i) { |
| while (i > 0) |
| i--; |
| } |
| |
| // CHECK: attributes [[HOT]] = { inlinehint nounwind {{.*}} } |
| // CHECK: attributes [[NORMAL]] = { nounwind {{.*}} } |
| // CHECK: attributes [[COLD]] = { cold nounwind {{.*}} } |
| |
| int main(int argc, const char *argv[]) { |
| int max = atoi(argv[1]); |
| int i; |
| for (i = 0; i < max; i++) |
| hot_100_percent(i); |
| for (i = 0; i < max * 4 / 10; i++) |
| hot_40_percent(i); |
| for (i = 0; i < max * 2 / 10; i++) |
| normal_func(i); |
| for (i = 0; i < max / 200; i++) |
| cold_func(i); |
| return 0; |
| } |