Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/vmx/gcc-bug-i.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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#include "harness.h" /* This problem occurs if a function is inlined. When its local variables get allocated space on the caller's (the function to which it is inlined) stack frame, they don't get 16-byte alignment even if they need it. Here's an example with a union (that's the first case I uncovered, but it's probably a general occurrence on inlining). */ #define N 10 /* adjust N = size of buffer to try to get bad alignment for inlined union */ #define DO_INLINE __attribute__ ((always_inline)) #define DONT_INLINE __attribute__ ((noinline)) #ifdef __LITTLE_ENDIAN__ static inline DO_INLINE int inline_me(vector signed short data) { union {vector signed short v; signed short s[8];} u; signed short x; unsigned char x1, x2; u.v = data; x = u.s[7]; x1 = (x >> 8) & 0xff; x2 = x & 0xff; return ((x2 << 8) | x1); } #else static inline DO_INLINE int inline_me(vector signed short data) { union {vector signed short v; signed short s[8];} u; u.v = data; return u.s[7]; } #endif static DONT_INLINE int foo(vector signed short data) { int c, buffer[N], i; c = inline_me(data); for (i=0; i<N; i++) { if (i == 0) buffer[i] = c; else buffer[i] = buffer[i-1] + c*i; } return buffer[N-1]; } static void test() { check(foo((vector signed short) ((vector unsigned char){1,2,3,4,5,6,7,8, 9,10,11,12,13,14,15,16})) == 0x2b4e0, "foo"); }