57 lines · c
1// RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -O1 -funroll-loops -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-ENABLE-UNROLL2// RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -O1 -fno-unroll-loops -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-DISABLE-UNROLL3// REQUIRES: x86-registered-target4 5// CHECK-ENABLE-UNROLL-LABEL: @for_test()6// CHECK-ENABLE-UNROLL: br label %[[FORBODY:[a-z0-9_\.]+]]7// CHECK-ENABLE-UNROLL: [[FORBODY]]:8// CHECK-ENABLE-UNROLL: store9// CHECK-ENABLE-UNROLL: store10// CHECK-ENABLE-UNROLL: br i1 %[[EXITCOND:[a-z0-9_\.]+]], label %[[FORBODY5:[a-z0-9_\.]+]], label %[[FORBODY]]11// CHECK-ENABLE-UNROLL: [[FORBODY5]]:12// CHECK-ENABLE-UNROLL: fmul13// CHECK-ENABLE-UNROLL: fadd14// CHECK-ENABLE-UNROLL: store15// CHECK-ENABLE-UNROLL: fmul16// CHECK-ENABLE-UNROLL: fadd17// CHECK-ENABLE-UNROLL: store18// CHECK-ENABLE-UNROLL: fmul19// CHECK-ENABLE-UNROLL: fadd20// CHECK-ENABLE-UNROLL: store21 22// CHECK-DISABLE-UNROLL-LABEL: @for_test()23// CHECK-DISABLE-UNROLL: br label %[[FORBODY:[a-z0-9_\.]+]]24// CHECK-DISABLE-UNROLL: [[FORBODY]]:25// CHECK-DISABLE-UNROLL: store26// CHECK-DISABLE-UNROLL-NOT: store27// CHECK-DISABLE-UNROLL: br i1 %[[EXITCOND:[a-z0-9_\.]+]], label %[[FORBODY5:[a-z0-9_\.]+]], label %[[FORBODY]]28// CHECK-DISABLE-UNROLL: [[FORBODY5]]:29// CHECK-DISABLE-UNROLL: fmul30// CHECK-DISABLE-UNROLL: fadd31// CHECK-DISABLE-UNROLL: store32// CHECK-DISABLE-UNROLL: fmul33// CHECK-DISABLE-UNROLL: fadd34// CHECK-DISABLE-UNROLL: store35// CHECK-DISABLE-UNROLL-NOT: fmul36// CHECK-DISABLE-UNROLL-NOT: fadd37// CHECK-DISABLE-UNROLL-NOT: store38// Limit scope of checking so this does not match "fadd" within git version string39// CHECK-DISABLE-UNROLL: !0 =40 41int printf(const char * restrict format, ...);42 43void for_test(void) {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