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alpha.h (HARD_REGNO_MODE_OK): Allow only 4 and 8 byte unit modes in FP regs.

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* alpha.h (HARD_REGNO_MODE_OK): Allow only 4 and 8 byte unit modes
        in FP regs.
        (MODES_TIEABLE_P): Define asymmetricly wrt modes illegal in FP regs.

From-SVN: r25825
This commit is contained in:
Richard Henderson 1999-03-17 06:49:22 -08:00 committed by Richard Henderson
parent aec3cfba19
commit e6a8ebb4e0
2 changed files with 17 additions and 8 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
Wed Mar 17 14:51:19 1999 Richard Henderson <rth@cygnus.com>
* alpha.h (HARD_REGNO_MODE_OK): Allow only 4 and 8 byte unit modes
in FP regs.
(MODES_TIEABLE_P): Define asymmetricly wrt modes illegal in FP regs.
Wed Mar 17 14:41:41 1999 Nick Clifton <nickc@cygnus.com>
* config/arm/aout.h (ASM_GENERATE_INTERNAL_LABEL): Fix compile

19
gcc/config/alpha/alpha.h
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@ -622,17 +622,20 @@ extern void override_options ();
registers can hold 32-bit and 64-bit integers as well, but not 16-bit
or 8-bit values. */
#define HARD_REGNO_MODE_OK(REGNO, MODE) \
((REGNO) < 32 || ((MODE) != QImode && (MODE) != HImode))
#define HARD_REGNO_MODE_OK(REGNO, MODE) \
((REGNO) >= 32 && (REGNO) <= 62 \
? GET_MODE_UNIT_SIZE (MODE) == 8 || GET_MODE_UNIT_SIZE (MODE) == 4 \
: 1)
/* Value is 1 if it is a good idea to tie two pseudo registers
when one has mode MODE1 and one has mode MODE2.
If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
for any hard reg, then this must be 0 for correct output. */
/* A C expression that is nonzero if a value of mode
MODE1 is accessible in mode MODE2 without copying.
This asymmetric test is true when MODE1 could be put
in an FP register but MODE2 could not. */
#define MODES_TIEABLE_P(MODE1, MODE2) \
((MODE1) == QImode || (MODE1) == HImode \
? (MODE2) == QImode || (MODE2) == HImode \
(HARD_REGNO_MODE_OK (32, (MODE1)) \
? HARD_REGNO_MODE_OK (32, (MODE2)) \
: 1)
/* Specify the registers used for certain standard purposes.