2010-07-02  Daniel Jacobowitz  <dan@codesourcery.com>
	    Julian Brown  <julian@codesourcery.com>
	    Sandra Loosemore <sandra@codesourcery.com>

	gcc/
	* config/arm/arm.c (arm_canonicalize_comparison): Canonicalize DImode
	comparisons.  Adjust to take both operands.
	(arm_select_cc_mode): Handle DImode comparisons.
	(arm_gen_compare_reg): Generate a scratch register for DImode
	comparisons which require one.  Use xor for Thumb equality checks.
	(arm_const_double_by_immediates): New.
	(arm_print_operand): Allow 'Q' and 'R' for constants.
	(get_arm_condition_code): Handle new CC_CZmode and CC_NCVmode.
	* config/arm/arm.h (CANONICALIZE_COMPARISON): Always use
	arm_canonicalize_comparison.
	* config/arm/arm-modes.def: Add CC_CZmode and CC_NCVmode.
	* config/arm/arm-protos.h (arm_canonicalize_comparison): Update
	prototype.
	(arm_const_double_by_immediates): Declare.
	* config/arm/constraints.md (Di): New constraint.
	* config/arm/predicates.md (arm_immediate_di_operand)
	(arm_di_operand, cmpdi_operand): New.
	* config/arm/arm.md (cbranchdi4): Handle non-Cirrus also.
	(*arm_cmpdi_insn, *arm_cmpdi_unsigned)
	(*arm_cmpdi_zero, *thumb_cmpdi_zero): New insns.
	(cstoredi4): Handle non-Cirrus also.

	gcc/testsuite/
	* gcc.c-torture/execute/20100416-1.c: New test case.


Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Sandra Loosemore <sandra@codesourcery.com>

From-SVN: r161764