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RISC-V: Lookup reversely in riscv_select_multilib_by_abi

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When use --print-multi-os-dir or -print-multi-directory, gcc outputs
different values with full -march option and the base one only.

$ ./gcc/xgcc --print-multi-os-dir -mabi=lp64d -march=rv64gc
lib64/lp64d

$ ./gcc/xgcc --print-multi-os-dir -mabi=lp64d -march=rv64gc_zba
.

The reason is that in multilib.h, the fallback value of multilib
is listed as the 1st one in `multilib_raw[]`.

gcc
	* common/config/riscv/riscv-common.cc(riscv_select_multilib_by_abi):
	look up reversely as the fallback path is listed as the 1st one.
This commit is contained in:
YunQiang Su 2024-09-05 15:14:43 +08:00 • committed by YunQiang Su
parent 811204f52a
commit 3162abfb50
1 changed files with 1 additions and 1 deletions
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2
gcc/common/config/riscv/riscv-common.cc
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@ -2079,7 +2079,7 @@ riscv_select_multilib_by_abi (
const std::string &riscv_current_abi_str,
const std::vector<riscv_multi_lib_info_t> &multilib_infos)
{
for (size_t i = 0; i < multilib_infos.size (); ++i)
for (ssize_t i = multilib_infos.size (); i >= 0; --i)
if (riscv_current_abi_str == multilib_infos[i].abi_str)
return xstrdup (multilib_infos[i].path.c_str ());