1 /* { dg-do compile } */
2 /* { dg-options "-O3 -fno-tree-fre -fno-tree-pre -fdump-tree-optimized --param sra-max-scalarization-size-Ospeed=32" } */
3 /* System Z needs hardware vector support for this to work (the optimization
4 gets too complex without it.
5 { dg-additional-options "-march=z13" { target s390x-*-* } } */
6 /* Use generic tuning on x86 for the same reasons as why alpha, powerpc etc. are
7 xfailed below.
8 { dg-additional-options "-mtune=generic" { target i?86-*-* x86_64-*-* } } */
9
10 int
foo()11 foo ()
12 {
13 const int a[8] = { 0, 1, 2, 3, 4, 5, 6, 7 };
14 int i, sum;
15
16 sum = 0;
17 for (i = 0; i < sizeof (a) / sizeof (*a); i++)
18 sum += a[i];
19
20 return sum;
21 }
22
23 /* After late unrolling the above loop completely DOM should be
24 able to optimize this to return 28. */
25
26 /* On alpha, the vectorizer generates writes of two vector elements at once,
27 but the loop reads only one element at a time, and DOM cannot resolve these.
28 The same happens on powerpc depending on the SIMD support available. */
29
30 /* { dg-final { scan-tree-dump "return 28;" "optimized" { xfail { { alpha*-*-* hppa*64*-*-* nvptx*-*-* mmix-knuth-mmixware } || { { { lp64 && { powerpc*-*-* sparc*-*-* riscv*-*-* } } || aarch64_sve } || { arm*-*-* && { ! arm_neon } } } } } } } */
31