30 lines
544 B
C
30 lines
544 B
C
// { dg-do run }
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// { dg-options "-O2" }
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#ifndef T
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# if __SIZEOF_INT128__ && defined __SSE__
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# define T __int128
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# else
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# define T long
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# endif
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#endif
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#ifndef R
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# ifdef __SSE__
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# define R "x"
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# else
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# define R "r"
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# endif
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#endif
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typedef T A; // #define T to long or __int128
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struct B { char d; A c; } __attribute__((packed));
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struct B b[50]; // many elements to avoid loop unrolling
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int main () {
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int i;
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for (i = 0; i < sizeof(b) / sizeof(*b); i++) {
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asm ("" : "+" R (b[i].c)); // #define R to "r" on ppc or "x" on x86_64
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}
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}
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