+2002-07-22 Richard Sandiford <rsandifo@redhat.com>
+
+ * config/mips/mips.h (CLASS_CANNOT_CHANGE_MODE): Include FP_REGS
+ on big-endian targets.
+
2002-07-22 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* hwint.h (HOST_WIDE_INT_PRINT_DEC_SPACE,
so (subreg:SI (reg:DI hi) 0) gets the high word instead of the low
word as intended.
+ Similarly, when using paired floating-point registers, the first
+ register holds the low word, regardless of endianness. So in big
+ endian mode, (subreg:SI (reg:DF $f0) 0) does not get the high word
+ as intended.
+
Also, loading a 32-bit value into a 64-bit floating-point register
will not sign-extend the value, despite what LOAD_EXTEND_OP says.
We can't allow 64-bit float registers to change from a 32-bit
mode to a 64-bit mode. */
#define CLASS_CANNOT_CHANGE_MODE \
- (TARGET_BIG_ENDIAN \
- ? (TARGET_FLOAT64 ? FP_REGS : NO_REGS) \
+ (TARGET_BIG_ENDIAN ? FP_REGS \
: (TARGET_FLOAT64 ? HI_AND_FP_REGS : HI_REG))
/* Defines illegal mode changes for CLASS_CANNOT_CHANGE_MODE. */