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| author | Aurelien Jarno <aurelien@aurel32.net> | 2016-07-21 08:27:47 +0000 |
|---|---|---|
| committer | Ramana Radhakrishnan <ramana@gcc.gnu.org> | 2016-07-21 08:27:47 +0000 |
| commit | a1b01d34036c85f23b7ca1a2c99e5b6bb0b8e68c (patch) | |
| tree | 3973337fb07a5c53e6c89382ef87a62c8ee3a2c6 /libgcc/ChangeLog | |
| parent | 23974819345d2dc793cc77c85a5d84d05c787fa2 (diff) | |
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[ARM] Fix PR target/59833
For Aurelien Jarno <aurelien@aurel32.net>
On ARM soft-float, the float to double conversion doesn't convert a sNaN
to qNaN as the IEEE Std 754 standard mandates:
"Under default exception handling, any operation signaling an invalid
operation exception and for which a floating-point result is to be
delivered shall deliver a quiet NaN."
Given the soft float ARM code ignores exceptions and always provides a
result, a float to double conversion of a signaling NaN should return a
quiet NaN. Fix this in extendsfdf2.
gcc/ChangeLog:
PR target/59833
* config/arm/ieee754-df.S (extendsfdf2): Convert sNaN to qNaN.
gcc/testsuite/ChangeLog:
* gcc.dg/pr59833.c: New testcase.
From-SVN: r238584
Diffstat (limited to 'libgcc/ChangeLog')
| -rw-r--r-- | libgcc/ChangeLog | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index f2d7114..f3e9104 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,3 +1,8 @@ +2016-07-21 Aurelien Jarno <aurelien@aurel32.net> + + PR target/59833 + * config/arm/ieee754-df.S (extendsfdf2): Convert sNaN to qNaN. + 2016-07-19 Nick Clifton <nickc@redhat.com> * config.host (m32r): Add m32r/t-m32r to tmake_file. |