Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/20050307-1.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* PR target/20322 */ extern void abort (void); typedef unsigned long T; typedef struct { T a, b; unsigned char c, d; } S; #define M (sizeof (T) * 4) S __attribute__((noinline)) foo (T x, T y) { S e; T f[2], g; e.b = (x & (~(T) 0 >> M)) * (y & (~(T) 0 >> M)); e.a = (x >> M) * (y >> M); f[0] = (x & (~(T) 0 >> M)) * (y >> M); f[1] = (x >> M) * (y & (~(T) 0 >> M)); g = e.b; e.b += (f[0] & (~(T) 0 >> M)) << M; if (e.b < g) e.a++; g = e.b; e.b += (f[1] & (~(T) 0 >> M)) << M; if (e.b < g) e.a++; e.a += (f[0] >> M); e.a += (f[1] >> M); e.c = 1; e.d = 0; return e; } int main (void) { T x = 1UL << (M * 2 - 1); S y = foo (1, x); if (y.a || y.b != x || y.c != 1 || y.d) abort (); return 0; }