Viewing file:  pr88497-2.c (1.38 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-require-effective-target vect_float } */
/* { 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 multiplication.
v1, v2, v3, v4 of type vector float.
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 float v4sf __attribute__ ((vector_size (16)));
float
test (float accumulator, v4sf v1, v4sf v2, v4sf v3, v4sf 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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