[arm-embedded] Backport mainline 174526

[Joey Ye]

Committed

2011-09-06  chengbin  <bin.cheng@arm.com>

	Backport cortex-r5 from mainline based on r174526

	* config/arm/arm-cores.def: Add cortex-r5.  Add DIV flags to
	Cortex-A15.
	* config/arm/arm-tune.md: Regenerate.
	* config/arm/arm.c (FL_DIV): Rename...
	(FL_THUMB_DIV): ... to this.
	(FL_ARM_DIV): Define.
	(FL_FOR_ARCH7R, FL_FOR_ARCH7M): Use FL_THUMB_DIV.
	(arm_arch_hwdiv): Remove.
	(arm_arch_thumb_hwdiv, arm_arch_arm_hwdiv): New variables.
	(arm_issue_rate): Add cortexr5.
	* config/arm/arm.h (TARGET_CPU_CPP_BUILTINS): Set
	__ARM_ARCH_EXT_IDIV__.
	(TARGET_IDIV): Define.
	(arm_arch_hwdiv): Remove.
	(arm_arch_arm_hwdiv, arm_arch_thumb_hwdiv): New prototypes.
	* config/arm/arm.md (tune_cortexr4): Add cortexr5.
	(divsi3, udivsi3): New patterns.
	* config/arm/thumb2.md (divsi3, udivsi3): Remove.
	* doc/invoke.texi: Document ARM -mcpu=cortex-r5

	The mainline changelog is:
	2011-06-01  Paul Brook  <paul@cpodesourcery.com>

	* config/arm/arm-cores.def: Add cortex-r5.  Add DIV flags to
	Cortex-A15.
	* config/arm/arm-tune.md: Regenerate.
	* config/arm/arm-tables.opt: Regenerate.
	* config/arm/arm.c (FL_DIV): Rename...
	(FL_THUMB_DIV): ... to this.
	(FL_ARM_DIV): Define.
	(FL_FOR_ARCH7R, FL_FOR_ARCH7M): Use FL_THUMB_DIV.
	(arm_arch_hwdiv): Remove.
	(arm_arch_thumb_hwdiv, arm_arch_arm_hwdiv): New variables.
	(arm_issue_rate): Add cortexr5.
	* config/arm/arm.h (TARGET_CPU_CPP_BUILTINS): Set
	__ARM_ARCH_EXT_IDIV__.
	(TARGET_IDIV): Define.
	(arm_arch_hwdiv): Remove.
	(arm_arch_arm_hwdiv, arm_arch_thumb_hwdiv): New prototypes.
	* config/arm/arm.md (tune_cortexr4): Add cortexr5.
	(divsi3, udivsi3): New patterns.
	* config/arm/thumb2.md (divsi3, udivsi3): Remove.
	* doc/invoke.texi: Document ARM -mcpu=cortex-r5
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