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dfp.c: Replace type punning assignments with memcpy throughout.

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* dfp.c: Replace type punning assignments with memcpy throughout.
	* Makefile.in (dfp.o-warn): Remove.

From-SVN: r145644
This commit is contained in:
Ben Elliston 2009-04-07 01:29:54 +00:00 • committed by Ben Elliston
parent 633dd06142
commit 95aac11b84
3 changed files with 33 additions and 29 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2009-04-07 Ben Elliston <bje@au.ibm.com>
* dfp.c: Replace type punning assignments with memcpy throughout.
* Makefile.in (dfp.o-warn): Remove.
2009-04-07 Alan Modra <amodra@bigpond.net.au>
PR target/39634

2
gcc/Makefile.in
View file

@ -175,8 +175,6 @@ GCC_WARN_CFLAGS = $(LOOSE_WARN) $($(@D)-warn) $(NOCOMMON_FLAG) $($@-warn)
# be subject to -Werror:
# flex output may yield harmless "no previous prototype" warnings
build/gengtype-lex.o-warn = -Wno-error
# dfp.c contains many alias violations
dfp.o-warn = -fno-strict-aliasing
# mips-tfile.c contains -Wcast-qual warnings.
mips-tfile.o-warn = -Wno-error

55
gcc/dfp.c
View file

@ -1,5 +1,6 @@
/* Decimal floating point support.
Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software
Foundation, Inc.
This file is part of GCC.
@ -139,7 +140,7 @@ encode_decimal32 (const struct real_format *fmt ATTRIBUTE_UNUSED,
decimal_to_decnumber (r, &dn);
decimal32FromNumber (&d32, &dn, &set);
buf[0] = *(uint32_t *) d32.bytes;
memcpy (&buf[0], d32.bytes, sizeof (uint32_t));
}
/* Decode an IEEE 754 decimal32 type into a real. */
@ -155,7 +156,7 @@ decode_decimal32 (const struct real_format *fmt ATTRIBUTE_UNUSED,
decContextDefault (&set, DEC_INIT_DECIMAL128);
set.traps = 0;
*((uint32_t *) d32.bytes) = (uint32_t) buf[0];
memcpy (&d32.bytes, &buf[0], sizeof (uint32_t));
decimal32ToNumber (&d32, &dn);
decimal_from_decnumber (r, &dn, &set);
@ -179,13 +180,13 @@ encode_decimal64 (const struct real_format *fmt ATTRIBUTE_UNUSED,
if (WORDS_BIGENDIAN == FLOAT_WORDS_BIG_ENDIAN)
{
buf[0] = *(uint32_t *) &d64.bytes[0];
buf[1] = *(uint32_t *) &d64.bytes[4];
memcpy (&buf[0], &d64.bytes[0], sizeof (uint32_t));
memcpy (&buf[1], &d64.bytes[4], sizeof (uint32_t));
}
else
{
buf[0] = *(uint32_t *) &d64.bytes[4];
buf[1] = *(uint32_t *) &d64.bytes[0];
memcpy (&buf[0], &d64.bytes[4], sizeof (uint32_t));
memcpy (&buf[1], &d64.bytes[0], sizeof (uint32_t));
}
}
@ -204,13 +205,13 @@ decode_decimal64 (const struct real_format *fmt ATTRIBUTE_UNUSED,
if (WORDS_BIGENDIAN == FLOAT_WORDS_BIG_ENDIAN)
{
*((uint32_t *) &d64.bytes[0]) = (uint32_t) buf[0];
*((uint32_t *) &d64.bytes[4]) = (uint32_t) buf[1];
memcpy (&d64.bytes[0], &buf[0], sizeof (uint32_t));
memcpy (&d64.bytes[4], &buf[1], sizeof (uint32_t));
}
else
{
*((uint32_t *) &d64.bytes[0]) = (uint32_t) buf[1];
*((uint32_t *) &d64.bytes[4]) = (uint32_t) buf[0];
memcpy (&d64.bytes[0], &buf[1], sizeof (uint32_t));
memcpy (&d64.bytes[4], &buf[0], sizeof (uint32_t));
}
decimal64ToNumber (&d64, &dn);
@ -235,17 +236,17 @@ encode_decimal128 (const struct real_format *fmt ATTRIBUTE_UNUSED,
if (WORDS_BIGENDIAN == FLOAT_WORDS_BIG_ENDIAN)
{
buf[0] = *(uint32_t *) &d128.bytes[0];
buf[1] = *(uint32_t *) &d128.bytes[4];
buf[2] = *(uint32_t *) &d128.bytes[8];
buf[3] = *(uint32_t *) &d128.bytes[12];
memcpy (&buf[0], &d128.bytes[0], sizeof (uint32_t));
memcpy (&buf[1], &d128.bytes[4], sizeof (uint32_t));
memcpy (&buf[2], &d128.bytes[8], sizeof (uint32_t));
memcpy (&buf[3], &d128.bytes[12], sizeof (uint32_t));
}
else
{
buf[0] = *(uint32_t *) &d128.bytes[12];
buf[1] = *(uint32_t *) &d128.bytes[8];
buf[2] = *(uint32_t *) &d128.bytes[4];
buf[3] = *(uint32_t *) &d128.bytes[0];
memcpy (&buf[0], &d128.bytes[12], sizeof (uint32_t));
memcpy (&buf[1], &d128.bytes[8], sizeof (uint32_t));
memcpy (&buf[2], &d128.bytes[4], sizeof (uint32_t));
memcpy (&buf[3], &d128.bytes[0], sizeof (uint32_t));
}
}
@ -264,17 +265,17 @@ decode_decimal128 (const struct real_format *fmt ATTRIBUTE_UNUSED,
if (WORDS_BIGENDIAN == FLOAT_WORDS_BIG_ENDIAN)
{
*((uint32_t *) &d128.bytes[0]) = (uint32_t) buf[0];
*((uint32_t *) &d128.bytes[4]) = (uint32_t) buf[1];
*((uint32_t *) &d128.bytes[8]) = (uint32_t) buf[2];
*((uint32_t *) &d128.bytes[12]) = (uint32_t) buf[3];
memcpy (&d128.bytes[0], &buf[0], sizeof (uint32_t));
memcpy (&d128.bytes[4], &buf[1], sizeof (uint32_t));
memcpy (&d128.bytes[8], &buf[2], sizeof (uint32_t));
memcpy (&d128.bytes[12], &buf[3], sizeof (uint32_t));
}
else
{
*((uint32_t *) &d128.bytes[0]) = (uint32_t) buf[3];
*((uint32_t *) &d128.bytes[4]) = (uint32_t) buf[2];
*((uint32_t *) &d128.bytes[8]) = (uint32_t) buf[1];
*((uint32_t *) &d128.bytes[12]) = (uint32_t) buf[0];
memcpy (&d128.bytes[0], &buf[3], sizeof (uint32_t));
memcpy (&d128.bytes[4], &buf[2], sizeof (uint32_t));
memcpy (&d128.bytes[8], &buf[1], sizeof (uint32_t));
memcpy (&d128.bytes[12], &buf[0], sizeof (uint32_t));
}
decimal128ToNumber (&d128, &dn);