Author: asbirlea Date: Fri May 24 10:40:52 2019 New Revision: 361653 URL: http://llvm.org/viewvc/llvm-project?rev=361653&view=rev Log: [NewPassManager] Add tuning option: LoopUnrolling [clang-change]
Summary: Use CodeGenOpts's setting for loop unrolling. [to be coupled with D61618] Reviewers: chandlerc Subscribers: jlebar, dmgreen, cfe-commits, llvm-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D61620 Added: cfe/trunk/test/CodeGen/loop-unroll.c Modified: cfe/trunk/lib/CodeGen/BackendUtil.cpp Modified: cfe/trunk/lib/CodeGen/BackendUtil.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/BackendUtil.cpp?rev=361653&r1=361652&r2=361653&view=diff ============================================================================== --- cfe/trunk/lib/CodeGen/BackendUtil.cpp (original) +++ cfe/trunk/lib/CodeGen/BackendUtil.cpp Fri May 24 10:40:52 2019 @@ -1051,6 +1051,7 @@ void EmitAssemblyHelper::EmitAssemblyWit } PipelineTuningOptions PTO; + PTO.LoopUnrolling = CodeGenOpts.UnrollLoops; // For historical reasons, loop interleaving is set to mirror setting for loop // unrolling. PTO.LoopInterleaving = CodeGenOpts.UnrollLoops; Added: cfe/trunk/test/CodeGen/loop-unroll.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/loop-unroll.c?rev=361653&view=auto ============================================================================== --- cfe/trunk/test/CodeGen/loop-unroll.c (added) +++ cfe/trunk/test/CodeGen/loop-unroll.c Fri May 24 10:40:52 2019 @@ -0,0 +1,55 @@ +// RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -S -O1 -funroll-loops -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-ENABLE-UNROLL +// RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -S -O1 -fno-unroll-loops -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-DISABLE-UNROLL +// RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -fexperimental-new-pass-manager -S -O1 -funroll-loops -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-ENABLE-UNROLL +// RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -fexperimental-new-pass-manager -S -O1 -fno-unroll-loops -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-DISABLE-UNROLL + +// CHECK-ENABLE-UNROLL-LABEL: @for_test() +// CHECK-ENABLE-UNROLL: br label %[[FORBODY:[a-z0-9_\.]+]] +// CHECK-ENABLE-UNROLL: [[FORBODY]]: +// CHECK-ENABLE-UNROLL: store +// CHECK-ENABLE-UNROLL: store +// CHECK-ENABLE-UNROLL: br i1 %[[EXITCOND:[a-z0-9_\.]+]], label %[[FORBODY5:[a-z0-9_\.]+]], label %[[FORBODY]] +// CHECK-ENABLE-UNROLL: [[FORBODY5]]: +// CHECK-ENABLE-UNROLL: fmul +// CHECK-ENABLE-UNROLL: fadd +// CHECK-ENABLE-UNROLL: store +// CHECK-ENABLE-UNROLL: fmul +// CHECK-ENABLE-UNROLL: fadd +// CHECK-ENABLE-UNROLL: store +// CHECK-ENABLE-UNROLL: fmul +// CHECK-ENABLE-UNROLL: fadd +// CHECK-ENABLE-UNROLL: store + +// CHECK-DISABLE-UNROLL-LABEL: @for_test() +// CHECK-DISABLE-UNROLL: br label %[[FORBODY:[a-z0-9_\.]+]] +// CHECK-DISABLE-UNROLL: [[FORBODY]]: +// CHECK-DISABLE-UNROLL: store +// CHECK-DISABLE-UNROLL-NOT: store +// CHECK-DISABLE-UNROLL: br i1 %[[EXITCOND:[a-z0-9_\.]+]], label %[[FORBODY5:[a-z0-9_\.]+]], label %[[FORBODY]] +// CHECK-DISABLE-UNROLL: [[FORBODY5]]: +// CHECK-DISABLE-UNROLL: fmul +// CHECK-DISABLE-UNROLL: fadd +// CHECK-DISABLE-UNROLL: store +// CHECK-DISABLE-UNROLL: fmul +// CHECK-DISABLE-UNROLL: fadd +// CHECK-DISABLE-UNROLL: store +// CHECK-DISABLE-UNROLL-NOT: fmul +// CHECK-DISABLE-UNROLL-NOT: fadd +// CHECK-DISABLE-UNROLL-NOT: store + +int printf(const char * restrict format, ...); + +void for_test() { + double A[1000], B[1000]; + int L = 500; + for (int i = 0; i < L; i++) { + A[i] = i; + } + for (int i = 0; i < L; i++) { + B[i] = A[i]*5; + B[i]++; + A[i] *= 7; + A[i]++; + } + printf("%lf %lf\n", A[0], B[0]); +} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
