Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/gcc.dg/pr27363.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/gcc.dg/pr27363.c Fri Oct 27 22:46:09 2017 +0900 @@ -0,0 +1,39 @@ +/* PR27363. CSE was breaking on the arm store multiple insn used for + structure copies. */ +/* { dg-do run } */ +/* { dg-options "-Os" } */ +extern void abort (void); + +struct snd_mask { + unsigned int bits[6]; +}; + +static int __attribute__((noinline)) +snd_mask_refine(struct snd_mask *mask) +{ + struct snd_mask old; + + old = *mask; + if (mask->bits[0]==0 && mask->bits[1]==0) + return 1; + + return old.bits[0] != mask->bits[0]; +} + +int main(int argc, char *argv[]) +{ + struct snd_mask mask; + + + mask.bits[0] = 23; + mask.bits[1] = 42; + mask.bits[2] = 0; + mask.bits[3] = 0; + mask.bits[4] = 0; + mask.bits[5] = 0; + + + if (snd_mask_refine(&mask)) + abort(); + return 0; +}