Fix in gfunc_prolog for ARM the counting of the highest numbered VFP float register used for parameter passing, rounded to 2. It can be computed from the range of VFP float register with the highest range start and adding the number of VFP float register occupied. This ensure that parameter of type struct that spans over more than 2 float registers are correctly taken into account.
Unified · Split
| @@ -1227,7 +1227,8 @@ void gfunc_prolog(CType *func_type) · 1226 unmodified lines | ||
| 1227 | 1227 | #ifdef TCC_ARM_HARDFLOAT |
| 1228 | 1228 | if (!variadic && (is_float(sym2->type.t) |
| 1229 | 1229 | || is_hgen_float_aggr(&sym2->type))) { |
| 1230 | − int tmpnf = assign_vfpreg(&avregs, align, size) + 1; | |
| 1230 | + int tmpnf = assign_vfpreg(&avregs, align, size); | |
| 1231 | + tmpnf += (size + 3) / 4; | |
| 1231 | 1232 | nf = (tmpnf > nf) ? tmpnf : nf; |
| 1232 | 1233 | } else |
| 1233 | 1234 | #endif |