Author: eraman Date: Thu Dec 17 13:14:27 2015 New Revision: 255918 URL: http://llvm.org/viewvc/llvm-project?rev=255918&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/Profile/Inputs/max-function-count.proftext cfe/trunk/test/Profile/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=255918&r1=255917&r2=255918&view=diff ============================================================================== --- cfe/trunk/lib/CodeGen/CodeGenModule.cpp (original) +++ cfe/trunk/lib/CodeGen/CodeGenModule.cpp Thu Dec 17 13:14:27 2015 @@ -375,8 +375,11 @@ void CodeGenModule::Release() { if (llvm::Function *CudaDtorFunction = CUDARuntime->makeModuleDtorFunction()) AddGlobalDtor(CudaDtorFunction); } - if (PGOReader && PGOStats.hasDiagnostics()) - PGOStats.reportDiagnostics(getDiags(), getCodeGenOpts().MainFileName); + if (PGOReader) { + getModule().setMaximumFunctionCount(PGOReader->getMaximumFunctionCount()); + if (PGOStats.hasDiagnostics()) + PGOStats.reportDiagnostics(getDiags(), getCodeGenOpts().MainFileName); + } EmitCtorList(GlobalCtors, "llvm.global_ctors"); EmitCtorList(GlobalDtors, "llvm.global_dtors"); EmitGlobalAnnotations(); Added: cfe/trunk/test/Profile/Inputs/max-function-count.proftext URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Profile/Inputs/max-function-count.proftext?rev=255918&view=auto ============================================================================== --- cfe/trunk/test/Profile/Inputs/max-function-count.proftext (added) +++ cfe/trunk/test/Profile/Inputs/max-function-count.proftext Thu Dec 17 13:14:27 2015 @@ -0,0 +1,26 @@ +begin +# Func Hash: +10 +# Num Counters: +2 +# Counter Values: +1 +0 + +main +# Func Hash: +0 +# Num Counters: +1 +# Counter Values: +1 + +end +# Func Hash: +10 +# Num Counters: +2 +# Counter Values: +2 +2 + Added: cfe/trunk/test/Profile/max-function-count.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Profile/max-function-count.c?rev=255918&view=auto ============================================================================== --- cfe/trunk/test/Profile/max-function-count.c (added) +++ cfe/trunk/test/Profile/max-function-count.c Thu Dec 17 13:14:27 2015 @@ -0,0 +1,24 @@ +// Test that maximum function counts are set correctly. + +// RUN: llvm-profdata merge %S/Inputs/max-function-count.proftext -o %t.profdata +// RUN: %clang %s -o - -mllvm -disable-llvm-optzns -emit-llvm -S -fprofile-instr-use=%t.profdata | FileCheck %s +// +int begin(int i) { + if (i) + return 0; + return 1; +} + +int end(int i) { + if (i) + return 0; + return 1; +} + +int main(int argc, const char *argv[]) { + begin(0); + end(1); + end(1); + return 0; +} +// CHECK: !{{[0-9]+}} = !{i32 1, !"MaxFunctionCount", i32 2} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
