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[Profile] Dump binary id to raw profiles on Windows. (#75618)

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#74652 adds `__buildid` symbol which allows us to dump it at runtime.
This commit is contained in:
Zequan Wu
2023-12-20 10:41:36 -05:00
committed by GitHub
parent 11141bc68a
commit 688fa35df0
2 changed files with 92 additions and 0 deletions
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10
compiler-rt/lib/profile/InstrProfilingPlatformWindows.c
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@@ -74,7 +74,17 @@ ValueProfNode *__llvm_profile_end_vnodes(void) { return &VNodesEnd; }
ValueProfNode *CurrentVNode = &VNodesStart + 1;
ValueProfNode *EndVNode = &VNodesEnd;
/* lld-link provides __buildid symbol which ponits to the 16 bytes build id when
* using /build-id flag. https://lld.llvm.org/windows_support.html#lld-flags */
#define BUILD_ID_LEN 16
COMPILER_RT_WEAK extern uint8_t __buildid[BUILD_ID_LEN];
COMPILER_RT_VISIBILITY int __llvm_write_binary_ids(ProfDataWriter *Writer) {
if (*__buildid) {
if (Writer &&
lprofWriteOneBinaryId(Writer, BUILD_ID_LEN, __buildid, 0) == -1)
return -1;
return sizeof(uint64_t) + BUILD_ID_LEN;
}
return 0;
}

82
compiler-rt/test/profile/Windows/binary-id.c Normal file
View File

@@ -0,0 +1,82 @@
// REQUIRES: target={{.*windows-msvc.*}}
// REQUIRES: lld-available
// RUN: %clang_profgen -O2 -o %t %s
// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
// RUN: llvm-profdata show --binary-ids %t.profraw > %t.out
// RUN: FileCheck %s --check-prefix=NO-BINARY-ID < %t.out
// RUN: llvm-profdata merge -o %t.profdata %t.profraw
// RUN: %clang_profgen -fuse-ld=lld -Wl,-build-id -O2 -o %t %s
// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
// RUN: llvm-profdata show --binary-ids %t.profraw > %t.profraw.out
// RUN: FileCheck %s --check-prefix=BINARY-ID-RAW-PROF < %t.profraw.out
// RUN: rm -rf %t.profdir
// RUN: env LLVM_PROFILE_FILE=%t.profdir/default_%m.profraw %run %t
// RUN: env LLVM_PROFILE_FILE=%t.profdir/default_%m.profraw %run %t
// RUN: env LLVM_PROFILE_FILE=%t.profdir/default_%m.profraw %run %t
// RUN: llvm-profdata show --binary-ids %t.profdir/default_*.profraw > %t.profraw.out
// RUN: FileCheck %s --check-prefix=ONE-BINARY-ID < %t.profraw.out
// RUN: llvm-profdata merge -o %t.profdata %t.profdir/default_*.profraw
// RUN: llvm-profdata show --binary-ids %t.profdata > %t.profdata.out
// RUN: FileCheck %s --check-prefix=ONE-BINARY-ID < %t.profdata.out
// Test raw profiles with DLLs.
// RUN: rm -rf %t.dir && split-file %s %t.dir
// RUN: %clang_profgen -O2 %t.dir/foo.c -fuse-ld=lld -Wl,-build-id -Wl,-dll -o %t.dir/foo.dll
// RUN: %clang_profgen -O2 %t.dir/bar.c -fuse-ld=lld -Wl,-build-id -Wl,-dll -o %t.dir/bar.dll
// RUN: %clang_profgen -O2 %t.dir/main.c -fuse-ld=lld -Wl,-build-id %t.dir/foo.lib %t.dir/bar.lib -o %t.dir/main.exe
// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t.dir/main.exe
// RUN: llvm-profdata show --binary-ids %t.profraw > %t.profraw.out
// RUN: llvm-profdata merge -o %t.profdata %t.profraw
// RUN: FileCheck %s --check-prefix=MULTI-BINARY-ID < %t.profraw.out
// RUN: llvm-profdata merge -o %t.profdata %t.profraw
// RUN: llvm-profdata show --binary-ids %t.profdata > %t.profdata.out
// RUN: FileCheck %s --check-prefix=MULTI-BINARY-ID < %t.profraw.out
//--- foo.c
__declspec(dllexport) void foo() {}
//--- bar.c
__declspec(dllexport) void bar() {}
//--- main.c
__declspec(dllimport) void foo();
__declspec(dllimport) void bar();
int main() {
foo();
bar();
return 0;
}
// NO-BINARY-ID: Instrumentation level: Front-end
// NO-BINARY-ID-NEXT: Total functions: 3
// NO-BINARY-ID-NEXT: Maximum function count: 1
// NO-BINARY-ID-NEXT: Maximum internal block count: 0
// NO-BINARY-ID-NOT: Binary IDs:
// BINARY-ID-RAW-PROF: Instrumentation level: Front-end
// BINARY-ID-RAW-PROF-NEXT: Total functions: 3
// BINARY-ID-RAW-PROF-NEXT: Maximum function count: 1
// BINARY-ID-RAW-PROF-NEXT: Maximum internal block count: 0
// BINARY-ID-RAW-PROF-NEXT: Binary IDs:
// BINARY-ID-RAW-PROF-NEXT: {{[0-9a-f]+}}
// ONE-BINARY-ID: Instrumentation level: Front-end
// ONE-BINARY-ID-NEXT: Total functions: 3
// ONE-BINARY-ID-NEXT: Maximum function count: 3
// ONE-BINARY-ID-NEXT: Maximum internal block count: 0
// ONE-BINARY-ID-NEXT: Binary IDs:
// ONE-BINARY-ID-NEXT: {{[0-9a-f]+}}
// MULTI-BINARY-ID: Instrumentation level: Front-end
// MULTI-BINARY-ID-NEXT: Total functions: 3
// MULTI-BINARY-ID-NEXT: Maximum function count: 1
// MULTI-BINARY-ID-NEXT: Maximum internal block count: 0
// MULTI-BINARY-ID-NEXT: Binary IDs:
// MULTI-BINARY-ID-NEXT: {{[0-9a-f]+}}
// MULTI-BINARY-ID-NEXT: {{[0-9a-f]+}}
// MULTI-BINARY-ID-NEXT: {{[0-9a-f]+}}