Viewing file:  pr88497-5.c (1.37 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-require-effective-target vect_int } */
/* { dg-require-effective-target powerpc_altivec_ok { target { powerpc*-*-* } } } */
/* { dg-require-effective-target sse2 { target { i?86-*-* x86_64-*-* } } } */
/* { dg-options "-O2 -ffast-math -fdump-tree-reassoc1" } */
/* { dg-additional-options "-maltivec" { target { powerpc*-*-* } } } */
/* { dg-additional-options "-msse2" { target { i?86-*-* x86_64-*-* } } } */
/* To test reassoc can undistribute vector bit_field_ref on bitwise XOR.
v1, v2, v3, v4 of type vector int.
reassoc transforms
accumulator ^= v1[0] ^ v1[1] ^ v1[2] ^ v1[3] ^
v2[0] ^ v2[1] ^ v2[2] ^ v2[3] ^
v3[0] ^ v3[1] ^ v3[2] ^ v3[3] ^
v4[0] ^ v4[1] ^ v4[2] ^ v4[3] ;
into:
T = v1 ^ v2 ^ v3 ^ v4;
accumulator ^= T[0] ^ T[1] ^ T[2] ^ T[3];
Fewer bit_field_refs, only four for 128 or more bits vector. */
typedef int v4si __attribute__ ((vector_size (16)));
int
test (int accumulator, v4si v1, v4si v2, v4si v3, v4si v4)
{
accumulator ^= v1[0] ^ v1[1] ^ v1[2] ^ v1[3];
accumulator ^= v2[0] ^ v2[1] ^ v2[2] ^ v2[3];
accumulator ^= v3[0] ^ v3[1] ^ v3[2] ^ v3[3];
accumulator ^= v4[0] ^ v4[1] ^ v4[2] ^ v4[3];
return accumulator;
}
/* { dg-final { scan-tree-dump-times "BIT_FIELD_REF" 4 "reassoc1" { target { powerpc*-*-* i?86-*-* x86_64-*-* } } } } */
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