1 // REQUIRES: x86-registered-target 2 3 // RUN: %clang_cc1 -triple x86_64-linux-gnu -O1 -S -o - %s | FileCheck -check-prefix=STRCPY -check-prefix=MEMSET %s 4 // RUN: %clang_cc1 -triple x86_64-linux-gnu -fno-builtin -O1 -S -o - %s | FileCheck -check-prefix=NOSTRCPY -check-prefix=NOMEMSET %s 5 // RUN: %clang_cc1 -triple x86_64-linux-gnu -fno-builtin-memset -O1 -S -o - %s | FileCheck -check-prefix=STRCPY -check-prefix=NOMEMSET %s 6 7 void PR13497() { 8 char content[2]; 9 // make sure we don't optimize this call to strcpy() 10 // STRCPY-NOT: __strcpy_chk 11 // NOSTRCPY: __strcpy_chk 12 __builtin___strcpy_chk(content, "", 1); 13 } 14 15 void PR4941(char *s) { 16 // Make sure we don't optimize this loop to a memset(). 17 // NOMEMSET-NOT: memset 18 // MEMSET: memset 19 for (unsigned i = 0; i < 8192; ++i) 20 s[i] = 0; 21 } 22