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-rw-r--r--gcc/config/pa/pa64-regs.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/gcc/config/pa/pa64-regs.h b/gcc/config/pa/pa64-regs.h
index 828265f23b8..ec865606d5f 100644
--- a/gcc/config/pa/pa64-regs.h
+++ b/gcc/config/pa/pa64-regs.h
@@ -235,12 +235,25 @@ enum reg_class { NO_REGS, R1_REGS, GENERAL_REGS, FPUPPER_REGS, FP_REGS,
{{0x00000000, 0x00000000}, /* NO_REGS */ \
{0x00000002, 0x00000000}, /* R1_REGS */ \
{0xfffffffe, 0x00000000}, /* GENERAL_REGS */ \
- {0x00000000, 0x00000000}, /* FPUPPER_REGS */ \
+ {0x00000000, 0x00000000}, /* FPUPPER_REGS */ \
{0x00000000, 0x0fffffff}, /* FP_REGS */ \
{0xfffffffe, 0x0fffffff}, /* GENERAL_OR_FP_REGS */ \
{0x00000000, 0x10000000}, /* SHIFT_REGS */ \
{0xfffffffe, 0x1fffffff}} /* ALL_REGS */
+/* The following macro defines cover classes for Integrated Register
+ Allocator. Cover classes is a set of non-intersected register
+ classes covering all hard registers used for register allocation
+ purpose. Any move between two registers of a cover class should be
+ cheaper than load or store of the registers. The macro value is
+ array of register classes with LIM_REG_CLASSES used as the end
+ marker. */
+
+#define IRA_COVER_CLASSES \
+{ \
+ GENERAL_REGS, FP_REGS, SHIFT_REGS, LIM_REG_CLASSES \
+}
+
/* Defines invalid mode changes. */
#define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \