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Toolchain: Enable LLVM Profile instrumentation

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Add a patch to let llvm's InstrProfiling modules know serenity supports
all the Unix-y features required to make -fprofile-instr-generate and
-fcoverage-mapping work properly on target.
This commit is contained in:
Andrew Kaster 2022-03-04 17:45:04 -07:00 • committed by Andreas Kling
parent 9b041786ac
commit 4334bd06b8
12 changed files with 94 additions and 10 deletions
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75
Toolchain/Patches/llvm/0009-compiler-rt-llvm-Enable-profile-instrumentation-for-.patch Normal file
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@ -0,0 +1,75 @@
From 539a12f2955a737f550be655c56a1a993eaa1ae2 Mon Sep 17 00:00:00 2001
From: Andrew Kaster <akaster@serenityos.org>
Date: Fri, 4 Mar 2022 15:13:42 -0700
Subject: [PATCH 9/9] [compiler-rt/llvm] Enable profile instrumentation
for SerenityOS
Treat SerenityOS the same as other *NIX platforms that behave close
enough to linux to use the pre-canned InstrProfiling implementation.
Curiously, enabling profiling for the SerenityOS target changes the ELF
OS ABI for userspace binaries to 3, or GNU/Linux.
---
compiler-rt/cmake/config-ix.cmake | 2 +-
compiler-rt/lib/profile/InstrProfilingPlatformLinux.c | 3 ++-
compiler-rt/lib/profile/InstrProfilingPlatformOther.c | 2 +-
llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp | 3 ++-
4 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/compiler-rt/cmake/config-ix.cmake b/compiler-rt/cmake/config-ix.cmake
index 7a47b7f..8d4211d 100644
--- a/compiler-rt/cmake/config-ix.cmake
+++ b/compiler-rt/cmake/config-ix.cmake
@@ -738,7 +738,7 @@ else()
endif()
if (PROFILE_SUPPORTED_ARCH AND NOT LLVM_USE_SANITIZER AND
- OS_NAME MATCHES "Darwin|Linux|FreeBSD|Windows|Android|Fuchsia|SunOS|NetBSD|AIX")
+ OS_NAME MATCHES "Darwin|Linux|FreeBSD|Windows|Android|Fuchsia|SunOS|NetBSD|AIX|SerenityOS")
set(COMPILER_RT_HAS_PROFILE TRUE)
else()
set(COMPILER_RT_HAS_PROFILE FALSE)
diff --git a/compiler-rt/lib/profile/InstrProfilingPlatformLinux.c b/compiler-rt/lib/profile/InstrProfilingPlatformLinux.c
index 592c09b..1833682 100644
--- a/compiler-rt/lib/profile/InstrProfilingPlatformLinux.c
+++ b/compiler-rt/lib/profile/InstrProfilingPlatformLinux.c
@@ -7,7 +7,8 @@
\*===----------------------------------------------------------------------===*/
#if defined(__linux__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \
- (defined(__sun__) && defined(__svr4__)) || defined(__NetBSD__)
+ (defined(__sun__) && defined(__svr4__)) || defined(__NetBSD__) || \
+ defined(__serenity__)
#include <elf.h>
#include <link.h>
diff --git a/compiler-rt/lib/profile/InstrProfilingPlatformOther.c b/compiler-rt/lib/profile/InstrProfilingPlatformOther.c
index 3e9b3ca..d257013 100644
--- a/compiler-rt/lib/profile/InstrProfilingPlatformOther.c
+++ b/compiler-rt/lib/profile/InstrProfilingPlatformOther.c
@@ -8,7 +8,7 @@
#if !defined(__APPLE__) && !defined(__linux__) && !defined(__FreeBSD__) && \
!(defined(__sun__) && defined(__svr4__)) && !defined(__NetBSD__) && \
- !defined(_WIN32)
+ !defined(_WIN32) && !defined(__serenity__)
#include <stdlib.h>
#include <stdio.h>
diff --git a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
index 6868408..eaa1b64 100644
--- a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
+++ b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
@@ -857,7 +857,8 @@ static bool needsRuntimeRegistrationOfSectionRange(const Triple &TT) {
return false;
// Use linker script magic to get data/cnts/name start/end.
if (TT.isOSLinux() || TT.isOSFreeBSD() || TT.isOSNetBSD() ||
- TT.isOSSolaris() || TT.isOSFuchsia() || TT.isPS4CPU() || TT.isOSWindows())
+ TT.isOSSolaris() || TT.isOSFuchsia() || TT.isPS4CPU() ||
+ TT.isOSWindows() || TT.isOSSerenity())
return false;
return true;
--
2.32.0