|  | // RUN: %clang     -target x86_64-unknown-linux -fsanitize-coverage=trace-pc-guard %s -S -emit-llvm -o - | FileCheck %s | 
|  | // RUN: %clang -O1 -target x86_64-unknown-linux -fsanitize-coverage=trace-pc-guard %s -S -emit-llvm -o - | FileCheck %s | 
|  | // RUN: %clang -O2 -target x86_64-unknown-linux -fsanitize-coverage=trace-pc-guard %s -S -emit-llvm -o - | FileCheck %s | 
|  | // RUN: %clang -O3 -target x86_64-unknown-linux -fsanitize-coverage=trace-pc-guard %s -S -emit-llvm -o - | FileCheck %s | 
|  | // RUN: %clang     -target x86_64-unknown-linux -fsanitize-coverage=trace-pc-guard %s -S -emit-llvm -flto=thin -o - | FileCheck %s | 
|  | // RUN: %clang -O2 -target x86_64-unknown-linux -fsanitize-coverage=trace-pc-guard %s -S -emit-llvm -flto=thin -o - | FileCheck %s | 
|  | // RUN: %clang     -target x86_64-unknown-linux -fsanitize-coverage=trace-pc-guard %s -S -emit-llvm -flto -o - | FileCheck %s | 
|  | // RUN: %clang -O2 -target x86_64-unknown-linux -fsanitize-coverage=trace-pc-guard %s -S -emit-llvm -flto -o - | FileCheck %s | 
|  |  | 
|  | // Verify that -fsanitize-coverage invokes SanitizerCoveragePass instrumentation. | 
|  |  | 
|  | int foo(int *a) { return *a; } | 
|  | // CHECK: _sancov_ |