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-rw-r--r--contrib/compiler-rt/lib/ppc/fixtfdi.c104
1 files changed, 0 insertions, 104 deletions
diff --git a/contrib/compiler-rt/lib/ppc/fixtfdi.c b/contrib/compiler-rt/lib/ppc/fixtfdi.c
deleted file mode 100644
index 56e7b3fbf3e5..000000000000
--- a/contrib/compiler-rt/lib/ppc/fixtfdi.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/* This file is distributed under the University of Illinois Open Source
- * License. See LICENSE.TXT for details.
- */
-
-/* int64_t __fixunstfdi(long double x);
- * This file implements the PowerPC 128-bit double-double -> int64_t conversion
- */
-
-#include "DD.h"
-#include "../int_math.h"
-
-uint64_t __fixtfdi(long double input)
-{
- const DD x = { .ld = input };
- const doublebits hibits = { .d = x.s.hi };
-
- const uint32_t absHighWord = (uint32_t)(hibits.x >> 32) & UINT32_C(0x7fffffff);
- const uint32_t absHighWordMinusOne = absHighWord - UINT32_C(0x3ff00000);
-
- /* If (1.0 - tiny) <= input < 0x1.0p63: */
- if (UINT32_C(0x03f00000) > absHighWordMinusOne)
- {
- /* Do an unsigned conversion of the absolute value, then restore the sign. */
- const int unbiasedHeadExponent = absHighWordMinusOne >> 20;
-
- int64_t result = hibits.x & INT64_C(0x000fffffffffffff); /* mantissa(hi) */
- result |= INT64_C(0x0010000000000000); /* matissa(hi) with implicit bit */
- result <<= 10; /* mantissa(hi) with one zero preceeding bit. */
-
- const int64_t hiNegationMask = ((int64_t)(hibits.x)) >> 63;
-
- /* If the tail is non-zero, we need to patch in the tail bits. */
- if (0.0 != x.s.lo)
- {
- const doublebits lobits = { .d = x.s.lo };
- int64_t tailMantissa = lobits.x & INT64_C(0x000fffffffffffff);
- tailMantissa |= INT64_C(0x0010000000000000);
-
- /* At this point we have the mantissa of |tail| */
- /* We need to negate it if head and tail have different signs. */
- const int64_t loNegationMask = ((int64_t)(lobits.x)) >> 63;
- const int64_t negationMask = loNegationMask ^ hiNegationMask;
- tailMantissa = (tailMantissa ^ negationMask) - negationMask;
-
- /* Now we have the mantissa of tail as a signed 2s-complement integer */
-
- const int biasedTailExponent = (int)(lobits.x >> 52) & 0x7ff;
-
- /* Shift the tail mantissa into the right position, accounting for the
- * bias of 10 that we shifted the head mantissa by.
- */
- tailMantissa >>= (unbiasedHeadExponent - (biasedTailExponent - (1023 - 10)));
-
- result += tailMantissa;
- }
-
- result >>= (62 - unbiasedHeadExponent);
-
- /* Restore the sign of the result and return */
- result = (result ^ hiNegationMask) - hiNegationMask;
- return result;
-
- }
-
- /* Edge cases handled here: */
-
- /* |x| < 1, result is zero. */
- if (1.0 > crt_fabs(x.s.hi))
- return INT64_C(0);
-
- /* x very close to INT64_MIN, care must be taken to see which side we are on. */
- if (x.s.hi == -0x1.0p63) {
-
- int64_t result = INT64_MIN;
-
- if (0.0 < x.s.lo)
- {
- /* If the tail is positive, the correct result is something other than INT64_MIN.
- * we'll need to figure out what it is.
- */
-
- const doublebits lobits = { .d = x.s.lo };
- int64_t tailMantissa = lobits.x & INT64_C(0x000fffffffffffff);
- tailMantissa |= INT64_C(0x0010000000000000);
-
- /* Now we negate the tailMantissa */
- tailMantissa = (tailMantissa ^ INT64_C(-1)) + INT64_C(1);
-
- /* And shift it by the appropriate amount */
- const int biasedTailExponent = (int)(lobits.x >> 52) & 0x7ff;
- tailMantissa >>= 1075 - biasedTailExponent;
-
- result -= tailMantissa;
- }
-
- return result;
- }
-
- /* Signed overflows, infinities, and NaNs */
- if (x.s.hi > 0.0)
- return INT64_MAX;
- else
- return INT64_MIN;
-}