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068a627455
glibc/soft-fp
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Joseph Myers 068a627455 soft-fp: Add _FP_UNREACHABLE. 
This patch makes soft-fp use a new macro _FP_UNREACHABLE in place of
calling abort in unreachable default cases of switch statements.
_FP_UNREACHABLE expands to call __builtin_unreachable for GCC 4.5 and
later; the fallback to abort is thus only for kernel use.

Tested for powerpc-nofpu that installed stripped shared libraries are
unchanged by this patch.  Also tested with the math/ tests for mips64
(in the case of fma there *was* previously an abort call generated,
unlike for the other operations - one switch only deals with a subset
of classes for one operand based on what could have been generated in
the earlier part of fma, whereas the other switches deal with all
combinations of two classes - and this is apparently too complicated
for the default case to have been optimized away).

	* soft-fp/soft-fp.h (_FP_UNREACHABLE): New macro.
	* soft-fp/op-common.h (_FP_MUL): Use _FP_UNREACHABLE instead of
	abort.
	(_FP_FMA): Likewise.
	(_FP_DIV): Likewise.
2015-03-11 01:14:34 +00:00
..
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Banner Update. 1999-12-29 18:11:48 +00:00
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double.h soft-fp: Use multiple-include guards. 2015-03-10 00:32:29 +00:00
eqdf2.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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extended.h soft-fp: Use multiple-include guards. 2015-03-10 00:32:29 +00:00
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op-1.h soft-fp: Use multiple-include guards. 2015-03-10 00:32:29 +00:00
op-2.h soft-fp: Use multiple-include guards. 2015-03-10 00:32:29 +00:00
op-4.h soft-fp: Use multiple-include guards. 2015-03-10 00:32:29 +00:00
op-8.h soft-fp: Use multiple-include guards. 2015-03-10 00:32:29 +00:00
op-common.h soft-fp: Add _FP_UNREACHABLE. 2015-03-11 01:14:34 +00:00
quad.h soft-fp: Use multiple-include guards. 2015-03-10 00:32:29 +00:00
single.h soft-fp: Use multiple-include guards. 2015-03-10 00:32:29 +00:00
soft-fp.h soft-fp: Add _FP_UNREACHABLE. 2015-03-11 01:14:34 +00:00
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testit.c Remove trailing whitespace. 2013-06-05 20:44:03 +00:00
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