1 // 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 2 // 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 3 // 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 4 // 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 5 // REQUIRES: x86-registered-target 6 7 // CHECK-ENABLE-UNROLL-LABEL: @for_test() 8 // CHECK-ENABLE-UNROLL: br label %[[FORBODY:[a-z0-9_\.]+]] 9 // CHECK-ENABLE-UNROLL: [[FORBODY]]: 10 // CHECK-ENABLE-UNROLL: store 11 // CHECK-ENABLE-UNROLL: store 12 // CHECK-ENABLE-UNROLL: br i1 %[[EXITCOND:[a-z0-9_\.]+]], label %[[FORBODY5:[a-z0-9_\.]+]], label %[[FORBODY]] 13 // CHECK-ENABLE-UNROLL: [[FORBODY5]]: 14 // CHECK-ENABLE-UNROLL: fmul 15 // CHECK-ENABLE-UNROLL: fadd 16 // CHECK-ENABLE-UNROLL: store 17 // CHECK-ENABLE-UNROLL: fmul 18 // CHECK-ENABLE-UNROLL: fadd 19 // CHECK-ENABLE-UNROLL: store 20 // CHECK-ENABLE-UNROLL: fmul 21 // CHECK-ENABLE-UNROLL: fadd 22 // CHECK-ENABLE-UNROLL: store 23 24 // CHECK-DISABLE-UNROLL-LABEL: @for_test() 25 // CHECK-DISABLE-UNROLL: br label %[[FORBODY:[a-z0-9_\.]+]] 26 // CHECK-DISABLE-UNROLL: [[FORBODY]]: 27 // CHECK-DISABLE-UNROLL: store 28 // CHECK-DISABLE-UNROLL-NOT: store 29 // CHECK-DISABLE-UNROLL: br i1 %[[EXITCOND:[a-z0-9_\.]+]], label %[[FORBODY5:[a-z0-9_\.]+]], label %[[FORBODY]] 30 // CHECK-DISABLE-UNROLL: [[FORBODY5]]: 31 // CHECK-DISABLE-UNROLL: fmul 32 // CHECK-DISABLE-UNROLL: fadd 33 // CHECK-DISABLE-UNROLL: store 34 // CHECK-DISABLE-UNROLL: fmul 35 // CHECK-DISABLE-UNROLL: fadd 36 // CHECK-DISABLE-UNROLL: store 37 // CHECK-DISABLE-UNROLL-NOT: fmul 38 // CHECK-DISABLE-UNROLL-NOT: fadd 39 // CHECK-DISABLE-UNROLL-NOT: store 40 41 int printf(const char * restrict format, ...); 42 43 void for_test() { 44 double A[1000], B[1000]; 45 int L = 500; 46 for (int i = 0; i < L; i++) { 47 A[i] = i; 48 } 49 for (int i = 0; i < L; i++) { 50 B[i] = A[i]*5; 51 B[i]++; 52 A[i] *= 7; 53 A[i]++; 54 } 55 printf("%lf %lf\n", A[0], B[0]); 56 } 57