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Fix GCC 4.9 internal compiler error when using poly128_t (Issue 233)

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This commit is contained in:
Jeffrey Walton 2016-07-28 23:52:55 -04:00
parent bca0fa6a9e
commit 0db3a4e5d7
1 changed files with 25 additions and 7 deletions
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32
cpu.cpp
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@ -439,12 +439,21 @@ static bool TryPMULL()
volatile bool result = true;
__try
{
const poly64_t a1={1}, b1={2};
const poly64x2_t a2={1}, b2={2};
const poly64_t a1={2}, b1={3};
const poly64x2_t a2={4,5}, b2={6,7};
const poly64x2_t a3={0x8080808080808080,0xa0a0a0a0a0a0a0a0}, b3={0xc0c0c0c0c0c0c0c0, 0xe0e0e0e0e0e0e0e0};
const poly128_t r1 = vmull_p64(a1, b1);
const poly128_t r2 = vmull_high_p64(a2, b2);
const poly128_t r3 = vmull_high_p64(a3, b3);
result = (r1 != r2);
// Also see https://github.com/weidai11/cryptopp/issues/233.
const uint64x2_t& t1 = vreinterpretq_u64_p128(r1); // {6,0}
const uint64x2_t& t2 = vreinterpretq_u64_p128(r2); // {24,0}
const uint64x2_t& t3 = vreinterpretq_u64_p128(r3); // {bignum,bignum}
result = !!(vgetq_lane_u64(t1,0) == 0x06 && vgetq_lane_u64(t1,1) == 0x00 && vgetq_lane_u64(t2,0) == 0x1b &&
vgetq_lane_u64(t2,1) == 0x00 && vgetq_lane_u64(t3,0) == 0x6c006c006c006c00 && vgetq_lane_u64(t3,1) == 0x6c006c006c006c00);
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
@ -468,12 +477,21 @@ static bool TryPMULL()
result = false;
else
{
const poly64_t a1={1}, b1={2};
const poly64x2_t a2={1}, b2={2};
const poly64_t a1={2}, b1={3};
const poly64x2_t a2={4,5}, b2={6,7};
const poly64x2_t a3={0x8080808080808080,0xa0a0a0a0a0a0a0a0}, b3={0xc0c0c0c0c0c0c0c0, 0xe0e0e0e0e0e0e0e0};
const poly128_t r1 = vmull_p64(a1, b1);
const poly128_t r2 = vmull_high_p64(a2, b2);
const poly128_t r3 = vmull_high_p64(a3, b3);
result = (r1 != r2);
// Linaro is missing vreinterpretq_u64_p128. Also see https://github.com/weidai11/cryptopp/issues/233.
const uint64x2_t& t1 = (uint64x2_t)(r1); // {6,0}
const uint64x2_t& t2 = (uint64x2_t)(r2); // {24,0}
const uint64x2_t& t3 = (uint64x2_t)(r3); // {bignum,bignum}
result = !!(vgetq_lane_u64(t1,0) == 0x06 && vgetq_lane_u64(t1,1) == 0x00 && vgetq_lane_u64(t2,0) == 0x1b &&
vgetq_lane_u64(t2,1) == 0x00 && vgetq_lane_u64(t3,0) == 0x6c006c006c006c00 && vgetq_lane_u64(t3,1) == 0x6c006c006c006c00);
}
sigprocmask(SIG_SETMASK, (sigset_t*)&oldMask, NULL);
@ -482,7 +500,7 @@ static bool TryPMULL()
# endif
#else
return false;
#endif // CRYPTOPP_BOOL_CRYPTO_INTRINSICS_AVAILABLE
#endif // CRYPTOPP_BOOL_ARM_CRYPTO_INTRINSICS_AVAILABLE
}
static bool TryCRC32()