blob: b6dd7ba94fffab44d8a621a44c956c26ce520e07 [file] [log] [blame]
 /* { dg-do run } */ /* { dg-require-effective-target vect_double } */ /* { dg-require-effective-target vsx_hw { target { powerpc*-*-* } } } */ /* { dg-require-effective-target sse2_runtime { target { i?86-*-* x86_64-*-* } } } */ /* { dg-options "-O2 -ffast-math -fdump-tree-reassoc1" } */ /* { dg-additional-options "-mvsx" { target { powerpc*-*-* } } } */ /* { dg-additional-options "-msse2" { target { i?86-*-* x86_64-*-* } } } */ /* To test reassoc can undistribute vector bit_field_ref summation. arg1 and arg2 are two arrays whose elements of type vector double. Assuming: A0 = arg1[0], A1 = arg1[1], A2 = arg1[2], A3 = arg1[3], B0 = arg2[0], B1 = arg2[1], B2 = arg2[2], B3 = arg2[3], Then: V0 = A0 * B0, V1 = A1 * B1, V2 = A2 * B2, V3 = A3 * B3, reassoc transforms accumulator += V0[0] + V0[1] + V1[0] + V1[1] + V2[0] + V2[1] + V3[0] + V3[1]; into: T = V0 + V1 + V2 + V3 accumulator += T[0] + T[1]; Fewer bit_field_refs, only two for 128 or more bits vector. */ typedef double v2df __attribute__ ((vector_size (16))); __attribute__ ((noinline)) double test (double accumulator, v2df arg1[], v2df arg2[]) { v2df temp; temp = arg1[0] * arg2[0]; accumulator += temp[0] + temp[1]; temp = arg1[1] * arg2[1]; accumulator += temp[0] + temp[1]; temp = arg1[2] * arg2[2]; accumulator += temp[0] + temp[1]; temp = arg1[3] * arg2[3]; accumulator += temp[0] + temp[1]; return accumulator; } extern void abort (void); int main () { v2df v2[4] = {{1.0, 2.0}, {4.0, 8.0}, {1.0, 3.0}, {9.0, 27.0}}; v2df v3[4] = {{1.0, 4.0}, {16.0, 64.0}, {1.0, 2.0}, {3.0, 4.0}}; double acc = 100.0; double res = test (acc, v2, v3); if (res != 827.0) abort (); return 0; } /* { dg-final { scan-tree-dump-times "BIT_FIELD_REF" 2 "reassoc1" { target { powerpc*-*-* i?86-*-* x86_64-*-* } } } } */