Author: eraman Date: Fri Dec 11 18:31:02 2015 New Revision: 255397 URL: http://llvm.org/viewvc/llvm-project?rev=255397&view=rev Log: Attach maximum function count to Module when using PGO mode
This sets the maximum entry count among all functions in the program to the module using module flags. This allows the optimizer to use this information. Differential Revision: http://reviews.llvm.org/D15163 Added: cfe/trunk/test/CodeGen/pgo-max-function-count.c Modified: cfe/trunk/lib/CodeGen/CodeGenModule.cpp Modified: cfe/trunk/lib/CodeGen/CodeGenModule.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenModule.cpp?rev=255397&r1=255396&r2=255397&view=diff ============================================================================== --- cfe/trunk/lib/CodeGen/CodeGenModule.cpp (original) +++ cfe/trunk/lib/CodeGen/CodeGenModule.cpp Fri Dec 11 18:31:02 2015 @@ -376,6 +376,9 @@ void CodeGenModule::Release() { } if (PGOReader && PGOStats.hasDiagnostics()) PGOStats.reportDiagnostics(getDiags(), getCodeGenOpts().MainFileName); + // In PGO mode, attach maximum function count to the module. + if (PGOReader) + getModule().setMaximumFunctionCount(PGOReader->getMaximumFunctionCount()); EmitCtorList(GlobalCtors, "llvm.global_ctors"); EmitCtorList(GlobalDtors, "llvm.global_dtors"); EmitGlobalAnnotations(); Added: cfe/trunk/test/CodeGen/pgo-max-function-count.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/pgo-max-function-count.c?rev=255397&view=auto ============================================================================== --- cfe/trunk/test/CodeGen/pgo-max-function-count.c (added) +++ cfe/trunk/test/CodeGen/pgo-max-function-count.c Fri Dec 11 18:31:02 2015 @@ -0,0 +1,9 @@ +// RUN: %clang -fprofile-generate -o %t -O2 %s +// RUN: env LLVM_PROFILE_FILE=%t.profraw %t +// RUN: llvm-profdata merge -o %t.profdata %t.profraw +// RUN: %clang -fprofile-use=%t.profdata -o - -S -emit-llvm %s | FileCheck %s +// Check +int main() { + return 0; +} +// CHECK: !{{[0-9]+}} = !{i32 1, !"MaxFunctionCount", i32 1} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
