[PATCH] D120078: Insert MIRProfile into LLD

[Roger Kim via Phabricator via cfe-commits]

Roger created this revision.
Herald added subscribers: ormris, steven_wu, hiraditya.
Roger requested review of this revision.
Herald added projects: clang, LLVM.
Herald added subscribers: llvm-commits, cfe-commits.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D120078

Files:
  clang/test/Pika/MIP/mip-stat-debug-info.c
  llvm/lib/LTO/LTO.cpp


Index: llvm/lib/LTO/LTO.cpp
===================================================================
--- llvm/lib/LTO/LTO.cpp
+++ llvm/lib/LTO/LTO.cpp
@@ -52,6 +52,7 @@
 #include "llvm/Transforms/Utils/FunctionImportUtils.h"
 #include "llvm/Transforms/Utils/SplitModule.h"
 #ifdef __FACEBOOK__
+#include "pika/CodeGen/MIRProfileSummary.h"
 #include "pika/Transforms/IPO/IVarDirectAccess.h"
 #endif // __FACEBOOK__
 
@@ -977,10 +978,19 @@
     return StatsFileOrErr.takeError();
   std::unique_ptr<ToolOutputFile> StatsFile = std::move(StatsFileOrErr.get());
 
+#ifdef __FACEBOOK__
+  MIRProfileSummary::parseProfile();
+#endif
+
   Error Result = runRegularLTO(AddStream);
   if (!Result)
     Result = runThinLTO(AddStream, Cache, GUIDPreservedSymbols);
 
+#ifdef __FACEBOOK__
+  std::vector<std::string> temp;
+  MIRProfileSummary::publishFinalOrderedSymbols(temp);
+#endif
+
   if (StatsFile)
     PrintStatisticsJSON(StatsFile->os());
 
Index: clang/test/Pika/MIP/mip-stat-debug-info.c
===================================================================
--- clang/test/Pika/MIP/mip-stat-debug-info.c
+++ clang/test/Pika/MIP/mip-stat-debug-info.c
@@ -1,11 +1,28 @@
 // REQUIRES: system-darwin && native && asserts
 // RUN: llvm-odrcov yaml2mip %p/Inputs/mip-stat-debug-info-x86.yaml -p %t.mip
 // RUN: %clang -isysroot %macos_sdk_root -g -target x86_64-apple-macosx -flto -c -o %t.o %s
-// RUN: %clang -isysroot %macos_sdk_root -g -target x86_64-apple-macosx -Wl,-mllvm,-odrcov-use=%t.mip -Wl,-mllvm,-debug-only=mip-stat -o %t %t.o 2>/dev/stdout >/dev/null | FileCheck %s
+// RUN: %clang -isysroot %macos_sdk_root -g -target x86_64-apple-macosx -Wl,-mllvm,-odrcov-use=%t.mip -Wl,-mllvm,-debug-only=mip-stat -o %t-ld64.out %t.o 2>%t/logs-ld64 >/dev/null
+// RUN: FileCheck %s < %t/logs-ld64
+// RUN: llvm-objdump --section=__text -D %t-ld64.out | FileCheck --check-prefix OUTPUT-ORDER %s
+// RUN: %clang -fuse-ld=lld.darwinnew -isysroot %macos_sdk_root -g -target x86_64-apple-macosx -Wl,-mllvm,-odrcov-use=%t.mip -Wl,-mllvm,-debug-only=mip-stat -o %t-lld.out %t.o 2>%t/logs-lld >/dev/null
+// RUN: llvm-objdump --section=__text -D %t-lld.out | FileCheck --check-prefix OUTPUT-ORDER %s
+
+// # ld64 and lld should be running the same code for MIRProfile logic so the
+// # output should be exactly the same.
+// RUN: diff %t/logs-ld64 %t/logs-lld
 
 // RUN: llvm-odrcov yaml2mip %p/Inputs/mip-stat-debug-info-arm64.yaml -p %t-arm64.mip
 // RUN: %clang -isysroot %macos_sdk_root -g -target arm64-macosx -flto -c -o %t.o %s
-// RUN: %clang -isysroot %macos_sdk_root -g -target arm64-macosx -Wl,-mllvm,-odrcov-use=%t-arm64.mip -Wl,-mllvm,-debug-only=mip-stat -o %t %t.o 2>/dev/stdout >/dev/null | FileCheck --check-prefix CHECK-ARM64 %s
+// RUN: %clang -isysroot %macos_sdk_root -g -target arm64-macosx -Wl,-mllvm,-odrcov-use=%t-arm64.mip -Wl,-mllvm,-debug-only=mip-stat -o %t-arm64-ld64.out %t.o 2>%t/logs-arm64-ld64 >/dev/null
+// RUN: FileCheck --check-prefix CHECK-ARM64 %s < %t/logs-arm64-ld64
+// RUN: llvm-objdump --section=__text -D %t-arm64-ld64.out | FileCheck --check-prefix OUTPUT-ORDER %s
+// RUN: %clang -fuse-ld=lld.darwinnew -isysroot %macos_sdk_root -g -target arm64-macosx -Wl,-mllvm,-odrcov-use=%t-arm64.mip -Wl,-mllvm,-debug-only=mip-stat -o %t-arm64-lld.out %t.o 2>%t/logs-arm64-lld >/dev/null
+// RUN: FileCheck --check-prefix CHECK-ARM64 %s < %t/logs-arm64-lld
+// RUN: llvm-objdump --section=__text -D %t-arm64-lld.out | FileCheck --check-prefix OUTPUT-ORDER %s
+
+// # ld64 and lld should be running the same code for MIRProfile logic so the
+// # output should be exactly the same.
+// RUN: diff %t/logs-arm64-ld64 %t/logs-arm64-lld
 
 // CHECK:      [OdrCov] Parsed profile [[MIP_PATH:.+\.mip]]
 // CHECK-NEXT: [MachineIRProfileStat] Start
@@ -33,6 +50,12 @@
 // CHECK-ARM64-NEXT:   [MachineIRProfileStat]   f3: 24
 // CHECK-ARM64-NEXT:   [MachineIRProfileStat]   main: 56
 
+// OUTPUT-ORDER: Disassembly of section __TEXT,__text:
+// OUTPUT-ORDER: <_f1>:
+// OUTPUT-ORDER: <_f2>:
+// OUTPUT-ORDER: <_f3>:
+// OUTPUT-ORDER: <_f5>:
+
 #include <stdio.h>
 
 // Hot function


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