clang/test/CodeGen/loop-vectorize.c

   1 // RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -S -O1 -vectorize-loops -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-ENABLE-VECT
   2 // RUN: %clang_cc1 -triple x86_64 -target-cpu x86-64 -S -O1 -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK-DISABLE-VECT
   3 // REQUIRES: x86-registered-target
   4
   5 // CHECK-ENABLE-VECT-LABEL: @for_test()
   6 // CHECK-ENABLE-VECT: fmul <{{[0-9]+}} x double>
   7
   8 // CHECK-DISABLE-VECT-LABEL: @for_test()
   9 // CHECK-DISABLE-VECT: fmul double
  10 // CHECK-DISABLE-VECT-NOT: fmul <{{[0-9]+}} x double>
  11
  12 int printf(const char * restrict format, ...);
  13
  14 void for_test(void) {
  15   double A[1000], B[1000];
  16   int L = 500;
  17   for (int i = 0; i < L; i++) {
  18     A[i] = i;
  19   }
  20   for (int i = 0; i < L; i++) {
  21     B[i] = A[i]*5;
  22   }
  23   printf("%lf %lf\n", A[0], B[0]);
  24 }