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sh.h (MODES_TIEABLE_P): Don't tie SFmode to other FP modes.

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* config/sh/sh.h (MODES_TIEABLE_P): Don't tie SFmode to other FP
modes.

From-SVN: r37380
This commit is contained in:
Alexandre Oliva 2000-11-11 05:54:02 +00:00 committed by Alexandre Oliva
parent 585ddf9c47
commit 93a7784807
2 changed files with 12 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2000-11-11 Alexandre Oliva <aoliva@redhat.com>
* config/sh/sh.h (MODES_TIEABLE_P): Don't tie SFmode to other FP
modes.
2000-11-10 Joseph S. Myers <jsm28@cam.ac.uk>
* gcc.texi, gcov.texi: Update dates and version numbers.

9
gcc/config/sh/sh.h
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@ -537,10 +537,15 @@ do { \
/* 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. */
for any hard reg, then this must be 0 for correct output.
That's the case for xd registers: we don't hold SFmode values in
them, so we can't tie an SFmode pseudos with one in another
floating-point mode. */
#define MODES_TIEABLE_P(MODE1, MODE2) \
((MODE1) == (MODE2) || GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2))
((MODE1) == (MODE2) \
|| (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \
&& (MODE1) != SFmode && (MODE2) != SFmode))
/* Specify the registers used for certain standard purposes.
The values of these macros are register numbers. */