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riscv: Fix ftoi and ftof(long double->float)

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float to int must be truncations, not normal rounding.
And ftof was typoed to select the wrong conversion function.

This fixes tcctest.c completely.  (make -C tests test1)
This commit is contained in:
Michael Matz 2019-07-22 02:31:08 +02:00
parent 06184aec53
commit 1ada32900b
1 changed files with 2 additions and 2 deletions
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4
riscv64-gen.c
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@ -1067,7 +1067,7 @@ ST_FUNC void gen_cvt_ftoi(int t)
vtop++;
vtop->r = dr;
dr = ireg(dr);
EIu(0x53, 7, dr, rr, ((0x60 | (ft == VT_DOUBLE ? 1 : 0)) << 5) | (u ? 1 : 0) | (l ? 2 : 0)); // fcvt.[wl][u].[sd]
EIu(0x53, 1, dr, rr, ((0x60 | (ft == VT_DOUBLE ? 1 : 0)) << 5) | (u ? 1 : 0) | (l ? 2 : 0)); // fcvt.[wl][u].[sd] rtz
}
}
@ -1080,7 +1080,7 @@ ST_FUNC void gen_cvt_ftof(int dt)
if (dt == VT_LDOUBLE || st == VT_LDOUBLE) {
int func = (dt == VT_LDOUBLE) ?
(st == VT_FLOAT ? TOK___extendsftf2 : TOK___extenddftf2) :
(st == VT_FLOAT ? TOK___trunctfsf2 : TOK___trunctfdf2);
(dt == VT_FLOAT ? TOK___trunctfsf2 : TOK___trunctfdf2);
vpush_global_sym(&func_old_type, func);
vrott(2);
gfunc_call(1);