arm: Add support for VPR_REG in arm_class_likely_spilled_p

VPR_REG is the only register in its class, so it should be handled by
TARGET_CLASS_LIKELY_SPILLED_P, which is achieved by calling
default_class_likely_spilled_p.  No test fails without this patch, but
it seems it should be implemented.

Most of the work of this patch series was carried out while I was
working at STMicroelectronics as a Linaro assignee.

2022-02-22  Christophe Lyon  <christophe.lyon@arm.com>

	gcc/
	* config/arm/arm.cc (arm_class_likely_spilled_p): Handle VPR_REG.

diff --git a/gcc/config/arm/arm.cc b/gcc/config/arm/arm.cc
index 9c19589..8d7f095 100644 (file)
--- a/gcc/config/arm/arm.cc
+++ b/gcc/config/arm/arm.cc
@@ -29369,7 +29369,7 @@ arm_class_likely_spilled_p (reg_class_t rclass)
       || rclass  == CC_REG)
     return true;
 
-  return false;
+  return default_class_likely_spilled_p (rclass);
 }
 
 /* Implements target hook small_register_classes_for_mode_p.  */