Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.target/s390/zvector/pr94613.c @ 152:2b5abeee2509
update gcc11
author | anatofuz |
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date | Mon, 25 May 2020 07:50:57 +0900 |
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/* { dg-do run } */ /* { dg-require-effective-target s390_vx } */ /* { dg-options "-O3 -mzarch -march=arch13 -mzvector -std=gnu99 --save-temps" } */ #include <vecintrin.h> /* The initial implementation of vec_sel used an IF_THEN_ELSE rtx. This did NOT match what the vsel instruction does. vsel is a bit-wise operation. Using IF_THEN_ELSE made the + operation to be simplified away in combine. A plus operation affects other bits in the same element. Hence per-element simplifications are wrong for vsel. */ vector unsigned char __attribute__((noinline)) foo (vector unsigned char a, vector unsigned char b, vector unsigned char c) { return vec_sel (a + b, c, a); } /* FIXME: The OR operation still should be optimized away in that case. */ vector unsigned char __attribute__((noinline)) bar (vector unsigned char a, vector unsigned char b, vector unsigned char c) { return vec_sel (a | b, c, a); } int main () { vector unsigned char v = (vector unsigned char){ 1 }; if (foo (v, v, v)[0] != 3) __builtin_abort (); if (bar (v, v, v)[0] != 1) __builtin_abort (); return 0; }