r274107 - in /trunk/gcc: ChangeLog config/riscv...

[kito@gcc.gnu.org]

Author: kito
Date: Mon Aug  5 03:32:38 2019
New Revision: 274107

URL: https://gcc.gnu.org/viewcvs?rev=274107&root=gcc&view=rev
Log:
RISC-V: Promote type correctly for libcalls

 - argument and return value for libcall won't promote at
   default_promote_function_mode_always_promote, however we expect it
   should sign-extend as normal function.

 - Witout this patch, this test case will fail at -march=rv64i -mabi=lp64.

 - The implementation of riscv_promote_function_mode is borrowed from MIPS.

gcc/ChangeLog

	* config/riscv/riscv.c (riscv_promote_function_mode): New.
	(TARGET_PROMOTE_FUNCTION_MODE): Use riscv_promote_function_mode.

gcc/testsuite/ChangeLog

	* gcc.target/riscv/promote-type-for-libcall.c: New.

Added:
    trunk/gcc/testsuite/gcc.target/riscv/promote-type-for-libcall.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/riscv/riscv.c
    trunk/gcc/testsuite/ChangeLog