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[profile] Make the binary-id-offset.c test more robust #117647

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Merged
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Nov 27, 2024
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[profile] Make the binary-id-offset.c test more robust #117647

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23 changes: 14 additions & 9 deletions compiler-rt/test/profile/Linux/binary-id-offset.c
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Original file line number Diff line number Diff line change
@@ -1,15 +1,15 @@
// REQUIRES: linux
// REQUIRES: linux, lld-available
//
// Make sure the build-id can be found in both EXEC and DYN (PIE) files,
// even when the note's section-start is forced to a weird address.
// 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 -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: %{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
Expand All @@ -18,15 +18,20 @@
// REDEFINE: %{cflags} = -pie -fPIE
// RUN: %{check}

// REDEFINE: %{cflags} = -no-pie -Wl,--section-start=.note.gnu.build-id=0x1000000
// 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,--section-start=.note.gnu.build-id=0x1000000
// 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]]

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