gcc/testsuite/gcc.target/arm/lob3.c

   1 /* Check that GCC does not generate Armv8.1-M low over head loop instructions
   2    if causes VFP emulation library calls to happen inside the loop.  */
   3 /* { dg-do compile } */
   4 /* { dg-skip-if "avoid conflicting multilib options" { *-*-* } { "-marm" "-mcpu=*" "-mfloat-abi=hard" } } */
   5 /* { dg-options "-march=armv8.1-m.main -mthumb -O3 --save-temps -mfloat-abi=soft" } */
   6 /* { dg-require-effective-target arm_softfloat } */
   7 #include <stdlib.h>
   8 #include "lob.h"
   9
  10 double a[N];
  11 double b[N];
  12 double c[N];
  13
  14 int
  15 main (void)
  16 {
  17   for (int i = 0; i < N; i++)
  18     {
  19       a[i] = i;
  20       b[i] = i * 2;
  21       c[i] = a[i] + b[i];
  22     }
  23
  24   return 0;
  25 }
  26 /* { dg-final { scan-assembler-not {dls\s\S*,\s\S*} } } */
  27 /* { dg-final { scan-assembler-not {le\slr,\s\S*} } } */