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fix float to u64 intrinsics

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reverts commit
310e3b428c
(more info there)

now functions check for
sign bit in float.

now hopefully this patch will
cover entirety of areas it might affect
This commit is contained in:
Kyryl Melekhin 2020-09-10 17:35:36 +00:00
parent 60c1f70bb9
commit 618ba55a81
2 changed files with 27 additions and 10 deletions
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17
lib/libtcc1.c
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@ -543,8 +543,14 @@ unsigned long long __fixunssfdi (float a1)
if (exp >= 41)
return (unsigned long long)-1;
else if (exp >= 0)
if(SIGN(fl1.l))
return (unsigned long long)-(l << exp);
else
return (unsigned long long)l << exp;
else if (exp >= -23)
if(SIGN(fl1.l))
return -(l >> -exp);
else
return l >> -exp;
else
return 0;
@ -575,8 +581,14 @@ unsigned long long __fixunsdfdi (double a1)
if (exp >= 12)
return (unsigned long long)-1;
else if (exp >= 0)
if(SIGND(dl1))
return -(l >> exp);
else
return l << exp;
else if (exp >= -52)
if(SIGND(dl1))
return -(l >> -exp);
else
return l >> -exp;
else
return 0;
@ -608,7 +620,12 @@ unsigned long long __fixunsxfdi (long double a1)
if (exp > 0)
return (unsigned long long)-1;
else if (exp >= -63)
{
if(SIGNLD(dl1))
return -(l >> -exp);
else
return l >> -exp;
}
else
return 0;
}

2
tccgen.c
View file

@ -3478,7 +3478,7 @@ again:
vtop->c.i = (vtop->c.ld != 0);
} else {
if(sf)
vtop->c.i = (int64_t)vtop->c.ld;
vtop->c.i = vtop->c.ld;
else if (sbt_bt == VT_LLONG || (PTR_SIZE == 8 && sbt == VT_PTR))
;
else if (sbt & VT_UNSIGNED)