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Fix float playback for cross-compilation #35

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Oct 21, 2023
Merged

Fix float playback for cross-compilation #35

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21 changes: 8 additions & 13 deletions gcc/jit/jit-playback.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,7 @@ along with GCC; see the file COPYING3. If not see
#include "gcc.h"
#include "diagnostic.h"
#include "stmt.h"
#include "realmpfr.h"

#include "jit-playback.h"
#include "jit-result.h"
Expand Down Expand Up @@ -1083,22 +1084,16 @@ new_rvalue_from_const <double> (type *type,
// FIXME: type-checking, or coercion?
tree inner_type = type->as_tree ();

mpfr_t mpf_value;

mpfr_init2 (mpf_value, 64);
mpfr_set_d (mpf_value, value, MPFR_RNDN);

/* We have a "double", we want a REAL_VALUE_TYPE.

real.cc:real_from_target appears to require the representation to be
split into 32-bit values, and then sent as an pair of host long
ints. */
realmpfr.cc:real_from_mpfr. */
REAL_VALUE_TYPE real_value;
union
{
double as_double;
uint32_t as_uint32s[2];
} u;
u.as_double = value;
long int as_long_ints[2];
as_long_ints[0] = u.as_uint32s[0];
as_long_ints[1] = u.as_uint32s[1];
real_from_target (&real_value, as_long_ints, DFmode);
real_from_mpfr (&real_value, mpf_value, inner_type, MPFR_RNDN);
tree inner = build_real (inner_type, real_value);
return new rvalue (this, inner);
}
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