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| author | Alina Sbirlea <asbirlea@google.com> | 2019-05-24 17:40:52 +0000 |
|---|---|---|
| committer | Alina Sbirlea <asbirlea@google.com> | 2019-05-24 17:40:52 +0000 |
| commit | 21efe2afed7b743f37780f39b090af6145b4d527 (patch) | |
| tree | b132b2aeeb057bb2807bc6c97203c7a1bd342373 /clang | |
| parent | 4105882b87e5070d5918bec7b80157b9749180f8 (diff) | |
| download | bcm5719-llvm-21efe2afed7b743f37780f39b090af6145b4d527.tar.gz bcm5719-llvm-21efe2afed7b743f37780f39b090af6145b4d527.zip | |
[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
llvm-svn: 361653
Diffstat (limited to 'clang')
| -rw-r--r-- | clang/lib/CodeGen/BackendUtil.cpp | 1 | ||||
| -rw-r--r-- | clang/test/CodeGen/loop-unroll.c | 55 |
2 files changed, 56 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp index 1dbeec1c178..c5e56c7a069 100644 --- a/clang/lib/CodeGen/BackendUtil.cpp +++ b/clang/lib/CodeGen/BackendUtil.cpp @@ -1051,6 +1051,7 @@ void EmitAssemblyHelper::EmitAssemblyWithNewPassManager( } PipelineTuningOptions PTO; + PTO.LoopUnrolling = CodeGenOpts.UnrollLoops; // For historical reasons, loop interleaving is set to mirror setting for loop // unrolling. PTO.LoopInterleaving = CodeGenOpts.UnrollLoops; diff --git a/clang/test/CodeGen/loop-unroll.c b/clang/test/CodeGen/loop-unroll.c new file mode 100644 index 00000000000..c37411fa052 --- /dev/null +++ b/clang/test/CodeGen/loop-unroll.c @@ -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]); +} |
