1Instructions to reproduce 2------------------------- 3 4$ cat main.cpp 5void __attribute__((optnone)) func2() {} 6void __attribute__((noinline)) func1() { func2(); /* tail */ } 7int __attribute__((disable_tail_calls)) main() { 8 func1(); /* regular */ 9 return 0; 10} 11 12# Adding `-isysroot $(xcrun -sdk iphoneos.internal -show-sdk-path)` can fix 13# linker warnings when building on macOS. 14$ clang -arch arm64 main.cpp -o main.arm64.o -c -g -O2 15$ clang -arch arm64 main.arm64.o -o main.arm64 -g 16 17RUN: dsymutil -oso-prepend-path %p/../Inputs %p/../Inputs/private/tmp/call_pc/main.arm64 -o %t.dSYM 18RUN: llvm-dwarfdump %t.dSYM | FileCheck %s -implicit-check-not=DW_AT_call_pc 19 20CHECK: DW_AT_call_pc (0x0000000100007f94) 21