Dragan Mladjenovic via Gcc-patches <gcc-patches@gcc.gnu.org> 于2021年9月26日周日 下午9:26写道: > > This allows us to choose the different names if needed in the future. >
I try to apply this patch to current gcc, I get this error: /build/mips-mti-elf/srcs-gcc/gcc/testsuite/gcc.c-torture/compile/20010226-1.c: In function 'foo':^M /build/mips-mti-elf/srcs-gcc/gcc/testsuite/gcc.c-torture/compile/20010226-1.c:24:1: internal compiler error: output_operand: invalid %-code^M 0xa435c4 output_operand_lossage(char const*, ...)^M ../../srcs-gcc/gcc/final.c:3235^M 0xa43ec6 output_asm_insn(char const*, rtx_def**)^M ../../srcs-gcc/gcc/final.c:3604^M 0xa482c7 output_asm_insn(char const*, rtx_def**)^M ../../srcs-gcc/gcc/final.c:3466^M 0xa482c7 final_scan_insn_1^M ../../srcs-gcc/gcc/final.c:2894^M 0xa485bb final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)^M ../../srcs-gcc/gcc/final.c:2940^M 0xa486a6 final_1^M ../../srcs-gcc/gcc/final.c:1997^M 0xa49262 rest_of_handle_final^M ../../srcs-gcc/gcc/final.c:4285^M 0xa49262 execute^M ../../srcs-gcc/gcc/final.c:4363^M Please submit a full bug report,^M with preprocessed source if appropriate.^M Please include the complete backtrace with any bug report.^M See <https://gcc.gnu.org/bugs/> for instructions.^M compiler exited with status 1 > gcc/ChangeLog: > > * config/mips/mips.c (mips_print_operand_punctuation): > Handle '&' punctuation. > (mips_output_probe_stack_range): Use '%.' instead of $0. > * config/mips/mips.h (GLOBAL_POINTER_REGNUM): Move to ... > * config/mips/mips.md (GLOBAL_POINTER_REGNUM): ... here. > (trap, *conditional_trap_reg<mode>, *msac, *muls, > *muls<u>_di, <u>msubsidi4): Use '%.' instead of $0. > (clear_hazard_<mode>): Use '%&' instead of $31. > --- > gcc/config/mips/mips.c | 9 +++++++-- > gcc/config/mips/mips.h | 4 ---- > gcc/config/mips/mips.md | 17 +++++++++-------- > 3 files changed, 16 insertions(+), 14 deletions(-) > 3 files changed, 16 insertions(+), 14 deletions(-) > > diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c > index ce60c5500b7..ab63575eb26 100644 > --- a/gcc/config/mips/mips.c > +++ b/gcc/config/mips/mips.c > @@ -8816,6 +8816,7 @@ mips_pop_asm_switch (struct mips_asm_switch *asm_switch) > '^' Print the name of the pic call-through register (t9 or $25). > '+' Print the name of the gp register (usually gp or $28). > '$' Print the name of the stack pointer register (sp or $29). > + '&' Print the name of the return register (ra or $31). > ':' Print "c" to use the compact version if the delay slot is a nop. > '!' Print "s" to use the short version if the delay slot contains a > 16-bit instruction. > @@ -8902,6 +8903,10 @@ mips_print_operand_punctuation (FILE *file, int ch) > fputs (reg_names[STACK_POINTER_REGNUM], file); > break; > > + case '&': > + fputs (reg_names[RETURN_ADDR_REGNUM], file); > + break; > + > case ':': > /* When final_sequence is 0, the delay slot will be a nop. We can > use the compact version where available. The %: formatter will > @@ -12133,9 +12138,9 @@ mips_output_probe_stack_range (rtx reg1, rtx reg2) > strcpy (tmp, "%(%<bne\t%0,%1,"); > output_asm_insn (strcat (tmp, &loop_lab[1]), xops); > if (TARGET_64BIT) > - output_asm_insn ("sd\t$0,0(%0)%)", xops); > + output_asm_insn ("sd\t%.,0(%0)%)", xops); > else > - output_asm_insn ("sw\t$0,0(%0)%)", xops); > + output_asm_insn ("sw\t%.,0(%0)%)", xops); > I guess the problem is due to this. > return ""; > } > diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h > index f4e30ba3fdb..a44ccada0bc 100644 > --- a/gcc/config/mips/mips.h > +++ b/gcc/config/mips/mips.h > @@ -2064,10 +2064,6 @@ FP_ASM_SPEC "\ > function address than to call an address kept in a register. */ > #define NO_FUNCTION_CSE 1 > > -/* The ABI-defined global pointer. Sometimes we use a different > - register in leaf functions: see PIC_OFFSET_TABLE_REGNUM. */ > -#define GLOBAL_POINTER_REGNUM (GP_REG_FIRST + 28) > - > /* We normally use $28 as the global pointer. However, when generating > n32/64 PIC, it is better for leaf functions to use a call-clobbered > register instead. They can then avoid saving and restoring $28 > diff --git a/gcc/config/mips/mips.md b/gcc/config/mips/mips.md > index dee71dc1fb0..1c8b3b98b20 100644 > --- a/gcc/config/mips/mips.md > +++ b/gcc/config/mips/mips.md > @@ -167,6 +167,7 @@ > (GET_FCSR_REGNUM 2) > (SET_FCSR_REGNUM 4) > (PIC_FUNCTION_ADDR_REGNUM 25) > + (GLOBAL_POINTER_REGNUM 28) > (RETURN_ADDR_REGNUM 31) > (CPRESTORE_SLOT_REGNUM 76) > (GOT_VERSION_REGNUM 79) > @@ -1205,7 +1206,7 @@ > "" > { > if (ISA_HAS_COND_TRAP) > - return "teq\t$0,$0"; > + return "teq\t%.,%."; > else if (TARGET_MIPS16) > return "break 0"; > else > @@ -1230,7 +1231,7 @@ > (match_operand:GPR 2 "reg_or_0_operand" > "dJ")]) > (const_int 0))] > "ISA_HAS_COND_TRAP && !ISA_HAS_COND_TRAPI" > - "t%C0\t%z1,%2" > + "t%C0\t%z1,%z2" > [(set_attr "type" "trap")]) > > (define_insn "*conditional_trap<mode>" > @@ -1860,7 +1861,7 @@ > else if (TARGET_MIPS5500) > return "msub\t%2,%3"; > else > - return "msac\t$0,%2,%3"; > + return "msac\t%.,%2,%3"; > } > [(set_attr "type" "imadd") > (set_attr "accum_in" "1") > @@ -2060,7 +2061,7 @@ > (clobber (match_scratch:SI 3 "=X,l"))] > "ISA_HAS_MULS" > "@ > - muls\t$0,%1,%2 > + muls\t%.,%1,%2 > muls\t%0,%1,%2" > [(set_attr "type" "imul,imul3") > (set_attr "mode" "SI")]) > @@ -2243,7 +2244,7 @@ > (any_extend:DI (match_operand:SI 1 "register_operand" "d")) > (any_extend:DI (match_operand:SI 2 "register_operand" "d")))))] > "!TARGET_64BIT && ISA_HAS_MULS" > - "muls<u>\t$0,%1,%2" > + "muls<u>\t%.,%1,%2" > [(set_attr "type" "imul") > (set_attr "mode" "SI")]) > > @@ -2268,7 +2269,7 @@ > else if (TARGET_MIPS5500 || GENERATE_MADD_MSUB) > return "msub<u>\t%1,%2"; > else > - return "msac<u>\t$0,%1,%2"; > + return "msac<u>\t%.,%1,%2"; > } > [(set_attr "type" "imadd") > (set_attr "accum_in" "3") > @@ -5622,8 +5623,8 @@ > { > return "%(%<bal\t1f\n" > "\tnop\n" > - "1:\t<d>addiu\t$31,$31,12\n" > - "\tjr.hb\t$31\n" > + "1:\t<d>addiu\t%&,%&,12\n" > + "\tjr.hb\t%&\n" > "\tnop%>%)"; > }