| // REQUIRES: linux, lld-available |
| // |
| // Make sure the build-id can be found in both EXEC and DYN (PIE) files, |
| // even when the note has been loaded at an offset address in memory. |
| // (The DYN case would also apply to libraries, not explicitly tested here.) |
| |
| // DEFINE: %{cflags} = |
| // DEFINE: %{check} = ( \ |
| // DEFINE: %clang_profgen -fuse-ld=lld -Wl,--build-id -o %t %s %{cflags} && \ |
| // DEFINE: env LLVM_PROFILE_FILE=%t.profraw %run %t && \ |
| // DEFINE: llvm-readelf --notes %t && \ |
| // DEFINE: llvm-profdata show --binary-ids %t.profraw \ |
| // DEFINE: ) | FileCheck %s |
| |
| // REDEFINE: %{cflags} = -no-pie |
| // RUN: %{check} |
| |
| // REDEFINE: %{cflags} = -pie -fPIE |
| // RUN: %{check} |
| |
| // Moving the note after .bss also gives it extra LOAD segment padding, |
| // making its memory offset different than its file offset. |
| // RUN: echo "SECTIONS { .note.gnu.build-id : {} } INSERT AFTER .bss;" >%t.script |
| |
| // REDEFINE: %{cflags} = -no-pie -Wl,--script=%t.script |
| // RUN: %{check} |
| |
| // REDEFINE: %{cflags} = -pie -fPIE -Wl,--script=%t.script |
| // RUN: %{check} |
| |
| // CHECK-LABEL{LITERAL}: .note.gnu.build-id |
| // CHECK: Build ID: [[ID:[0-9a-f]+]] |
| |
| // CHECK-LABEL{LITERAL}: Instrumentation level: Front-end |
| // CHECK-LABEL{LITERAL}: Binary IDs: |
| // CHECK-NEXT: [[ID]] |
| |
| int main() { return 0; } |
