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

From: David Daney <ddaney dot cavm at gmail dot com>
To: "Moore\, Catherine" <Catherine_Moore at mentor dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, "Rozycki\, Maciej" <Maciej_Rozycki at mentor dot com>, rdsandiford at googlemail dot com
Date: Fri, 12 Apr 2013 09:45:58 -0700
Subject: Many warnings in MIPS port (Was: [PATCH] [MIPS] microMIPS gcc support)
References: <FD3DCEAC5B03E9408544A1E416F1124211F9CC2E at NA-MBX-04 dot mgc dot mentorg dot com> <871ubukhs7 dot fsf at talisman dot default> <FD3DCEAC5B03E9408544A1E416F11242987BD288 at NA-MBX-01 dot mgc dot mentorg dot com> <87d2vdtv3x dot fsf at talisman dot default> <FD3DCEAC5B03E9408544A1E416F11242987BDF64 at NA-MBX-01 dot mgc dot mentorg dot com> <871ubhem70 dot fsf at talisman dot default> <FD3DCEAC5B03E9408544A1E416F11242987BE308 at NA-MBX-01 dot mgc dot mentorg dot com> <878v5jp4xl dot fsf at talisman dot default> <FD3DCEAC5B03E9408544A1E416F11242987BE97B at NA-MBX-01 dot mgc dot mentorg dot com> <874ng7p1lr dot fsf at talisman dot default> <FD3DCEAC5B03E9408544A1E416F11242987BEADD at NA-MBX-01 dot mgc dot mentorg dot com> <8738vp7nfn dot fsf at talisman dot default> <FD3DCEAC5B03E9408544A1E416F11242987BEB4A at NA-MBX-01 dot mgc dot mentorg dot com> <87boad5gav dot fsf at talisman dot default> <FD3DCEAC5B03E9408544A1E416F11242987BECCA at NA-MBX-01 dot mgc dot mentorg dot com> <87620k5mh1 dot fsf at talisman dot default> <FD3DCEAC5B03E9408544A1E416F11242987BEFBE at NA-MBX-01 dot mgc dot mentorg dot com> <87sj3m4h8j dot fsf at talisman dot default>

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 libjavatarget 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

Follow-Ups:
- Re: Many warnings in MIPS port (Was: [PATCH] [MIPS] microMIPS gcc support)
  - From: Maciej W. Rozycki

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