about summary refs log tree commit diff
path: root/sysdeps/tile
diff options
context:
space:
mode:
authorJoseph Myers <joseph@codesourcery.com>2015-10-07 00:40:12 +0000
committerJoseph Myers <joseph@codesourcery.com>2015-10-07 00:40:12 +0000
commitb75bc69cdfe5247b2156ce249518f1c1df4d797d (patch)
tree7cbc51c7f8a7954e5394fcd873f42f7abeaa22df /sysdeps/tile
parenta68dec3b03b9c163ad79192cbe837208b2f90de1 (diff)
downloadglibc-b75bc69cdfe5247b2156ce249518f1c1df4d797d.tar.gz
glibc-b75bc69cdfe5247b2156ce249518f1c1df4d797d.tar.xz
glibc-b75bc69cdfe5247b2156ce249518f1c1df4d797d.zip
Don't use dbl-64/wordsize-64 lround based on llround for ILP32 (bug 19079).
The implementation of lround in dbl-64/wordsize-64 as an alias or
wrapper for llround is always incorrect when long is not 64-bit,
because it misses required exceptions in overflow cases, as shown by
my recently added tests.  This patch removes that alias / wrapper in
the non-LP64 case, together with the REGISTER_CAST_INT32_TO_INT64
macro, restoring the previous version of lround for dbl-64/wordsize-64
(newly conditioned on !_LP64).

Tested for x86_64, and for mips64 with use of dbl-64/wordsize-64
enabled.

	[BZ #19079]
	* sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c: Restore previous
	file, conditioned on [!_LP64].
	* sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c
	[!_LP64] (__lround): Do not define as function or alias.
	[!_LP64] (lround): Likewise.
	[!_LP64] (__lroundl): Likewise.
	[!_LP64] (lroundl): Likewise.
	* sysdeps/tile/sysdep.h (REGISTER_CAST_INT32_TO_INT64): Remove
	macro.
	* sysdeps/x86_64/x32/sysdep.h (REGISTER_CAST_INT32_TO_INT64):
	Likewise.
Diffstat (limited to 'sysdeps/tile')
-rw-r--r--sysdeps/tile/sysdep.h4
1 files changed, 0 insertions, 4 deletions
diff --git a/sysdeps/tile/sysdep.h b/sysdeps/tile/sysdep.h
index 7b3d8739d2..ead9dba0b4 100644
--- a/sysdeps/tile/sysdep.h
+++ b/sysdeps/tile/sysdep.h
@@ -108,7 +108,3 @@
 #endif
 
 #endif /* __ASSEMBLER__ */
-
-/* On tilegx, 32-bit values must have their high 32 bits sign extended;
-   random values are not allowed.  */
-#define REGISTER_CAST_INT32_TO_INT64 1