[PATCH, ARM]: Improve handling of DImode comparisons

[Richard Earnshaw]

On Mon, 2010-06-21 at 21:49 -0400, Sandra Loosemore wrote:
> 2010-06-21  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.
> 


OK

R.