toolchain/gcc: add GCC 8.1.0
[openwrt/openwrt.git] / toolchain / gcc / patches / 8.1.0 / 110-Fix-MIPS-PR-84790.patch
1 Fix https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84790.
2 MIPS16 functions have a static assembler prologue which clobbers
3 registers v0 and v1. Add these register clobbers to function call
4 instructions.
5
6 --- a/gcc/config/mips/mips.c
7 +++ b/gcc/config/mips/mips.c
8 @@ -3102,6 +3102,12 @@ mips_emit_call_insn (rtx pattern, rtx or
9 emit_insn (gen_update_got_version ());
10 }
11
12 + if (TARGET_MIPS16 && TARGET_USE_GOT)
13 + {
14 + clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), MIPS16_PIC_TEMP);
15 + clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), MIPS_PROLOGUE_TEMP (word_mode));
16 + }
17 +
18 if (TARGET_MIPS16
19 && TARGET_EXPLICIT_RELOCS
20 && TARGET_CALL_CLOBBERED_GP)