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emit_rtl.c (gen_lowpart_common): Conversion from const_int to const_double needs to be done right for big-endian...

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* emit_rtl.c (gen_lowpart_common): Conversion from const_int
        to const_double needs to be done right for big-endian systems.

From-SVN: r49180
This commit is contained in:
Hartmut Penner 2002-01-24 12:30:37 +00:00 committed by Hartmut Penner
parent 3b6cb9200d
commit 467cb2da56
2 changed files with 9 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-01-14 Hartmut Penner <hpenner@de.ibm.com>
* emit_rtl.c (gen_lowpart_common): Conversion from const_int
to const_double needs to be done right for big-endian systems.
2002-01-24 Jason Merrill <jason@redhat.com>
* config/sparc/sparc.md (call-jump peepholes): Pass the right insn

6
gcc/emit-rtl.c
View File

@ -919,13 +919,11 @@ gen_lowpart_common (mode, x)
low = INTVAL (x), high = low >> (HOST_BITS_PER_WIDE_INT -1);
else
low = CONST_DOUBLE_LOW (x), high = CONST_DOUBLE_HIGH (x);
#ifdef HOST_WORDS_BIG_ENDIAN
u.i[0] = high, u.i[1] = low;
#else
u.i[0] = low, u.i[1] = high;
#endif
return CONST_DOUBLE_FROM_REAL_VALUE (u.d, mode);
}
@ -1009,12 +1007,16 @@ gen_lowpart_common (mode, x)
high = CONST_DOUBLE_HIGH (x);
}
#if HOST_BITS_PER_WIDE_INT == 32
/* REAL_VALUE_TARGET_DOUBLE takes the addressing order of the
target machine. */
if (WORDS_BIG_ENDIAN)
i[0] = high, i[1] = low;
else
i[0] = low, i[1] = high;
#else
i[0] = low;
#endif
r = REAL_VALUE_FROM_TARGET_DOUBLE (i);
return CONST_DOUBLE_FROM_REAL_VALUE (r, mode);