Many warnings in MIPS port (Was: [PATCH] [MIPS] microMIPS gcc support)

[David Daney]

On 03/23/2013 02:07 AM, Richard Sandiford wrote:
> "Moore, Catherine" <Catherine_Moore@mentor.com> writes:
>> 2013-03-21  Catherine Moore  <clm@codesourcery.com>
>>
>> 	* config/mips/constraints.md (u, Udb7 Uead, Uean, Uesp, Uib3,
>> 	Uuw6, Usb4, ZS, ZT, ZU, ZV, ZW): New constraints.
>> 	* config/mip/predicates.md (lwsp_swsp_operand,
>> 	lw16_sw16_operand, lhu16_sh16_operand, lbu16_operand,
>> 	sb16_operand, db4_operand, db7_operand, ib3_operand,
>> 	sb4_operand, ub4_operand, uh4_operand, uw4_operand,
>> 	uw5_operand, uw6_operand, addiur2_operand, addiusp_operand,
>> 	andi16_operand): New predicates.
>> 	* config/mips/mips.md (compression): New attribute.
>> 	(enabled): New attribute.
>> 	(length): Consider compression in computing length.
>> 	(shift_compression): New code attribute.
>> 	(*add<mode>3): New operands. Record compression.
>> 	(sub<mode>3): Likewise.
>> 	(one_cmpl<mode>2): Likewise.
>> 	(*and<mode>3): Likewise.
>> 	(*ior<mode>3): Likewise.
>> 	(unnamed pattern for xor): Likewise.
>> 	(*zero_extend<SHORT:mode><GPR:mode>2): Likewise.
>> 	(*<optab><mode>3): Likewise.
>> 	(*mov<mode>_internal: Likewise.
>> 	* config/mips/mips-protos.h (mips_signed_immediate_p): New.
>> 	(mips_unsigned_immediate_p): New.
>> 	(umips_lwsp_swsp_address_p): New.
>> 	(m16_based_address_p): New.
>> 	* config/mips/mips-protos.h (mips_signed_immediate_p): New prototype.
>> 	(mips_unsigned_immediate_p): New prototype.
>> 	(lwsp_swsp_address_p): New prototype.
>> 	(m16_based_address_p): New prototype.
>> 	* config/mips/mips.c (mips_unsigned_immediate_p): New function.
>> 	(mips_signed_immediate_p): New function.
>> 	(m16_based_address_p): New function.
>> 	(lwsp_swsp_address_p): New function.
>> 	(mips_print_operand_punctuation): Recognize short delay slot insns
>> 	for microMIPS.add<mode>3"
>
> OK.  Thanks for your patience through all this.  Now the framework's
> been sorted out, the review process for future encoding patches should
> be much less painful.
>
> Richard

I just tried to bootstrap on o32 Debian.  This system has binutils 2.20.1.

Here is a sample of the resulting failure when building the libjava 
target libs:
.
.
.
  /home/daney/gccsvn/build/./gcc/xgcc -B/home/daney/gccsvn/build/./gcc/ 
-B/usr/local/mips-unknown-linux-gnu/bin/ 
-B/usr/local/mips-unknown-linux-gnu/lib/ -isystem 
/usr/local/mips-unknown-linux-gnu/include -isystem 
/usr/local/mips-unknown-linux-gnu/sys-include -DHAVE_CONFIG_H -I. 
-I../../../../trunk/libjava/libltdl -g -O2 -minterlink-mips16 -c 
../../../../trunk/libjava/libltdl/ltdl.c  -fPIC -DPIC -o .libs/ltdl.o
/tmp/cckECtVQ.s: Assembler messages:
/tmp/cckECtVQ.s:12: Warning: Tried to set unrecognized symbol: nomicromips

/tmp/cckECtVQ.s:115: Warning: Tried to set unrecognized symbol: nomicromips

/tmp/cckECtVQ.s:161: Warning: Tried to set unrecognized symbol: nomicromips
.
.
.

There are literally thousands and thousands of these warnings.

David Daney