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* [Bug rtl-optimization/23941] New: compress_float_constant creates denormals
@ 2005-09-18 7:24 rth at gcc dot gnu dot org
2005-09-18 7:24 ` [Bug rtl-optimization/23941] " rth at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: rth at gcc dot gnu dot org @ 2005-09-18 7:24 UTC (permalink / raw)
To: gcc-bugs
extern void abort (void);
double d = __FLT_MIN__ / 2;
int main()
{
double x = __FLT_MIN__ / 2;
if (x != d)
abort ();
return 0;
}
This test will SIGFPE on alpha, because we'll emit the constant for X as
a float. Obviously this cannot be represented as a normalized number.
--
Summary: compress_float_constant creates denormals
Product: gcc
Version: 4.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: rth at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: alpha
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23941
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug rtl-optimization/23941] compress_float_constant creates denormals 2005-09-18 7:24 [Bug rtl-optimization/23941] New: compress_float_constant creates denormals rth at gcc dot gnu dot org @ 2005-09-18 7:24 ` rth at gcc dot gnu dot org 2005-09-19 16:56 ` cvs-commit at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: rth at gcc dot gnu dot org @ 2005-09-18 7:24 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |rth at gcc dot gnu dot org |dot org | Status|UNCONFIRMED |ASSIGNED Ever Confirmed| |1 Last reconfirmed|0000-00-00 00:00:00 |2005-09-18 07:24:27 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23941 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/23941] compress_float_constant creates denormals 2005-09-18 7:24 [Bug rtl-optimization/23941] New: compress_float_constant creates denormals rth at gcc dot gnu dot org 2005-09-18 7:24 ` [Bug rtl-optimization/23941] " rth at gcc dot gnu dot org @ 2005-09-19 16:56 ` cvs-commit at gcc dot gnu dot org 2005-09-19 17:02 ` cvs-commit at gcc dot gnu dot org 2005-09-19 17:10 ` rth at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2005-09-19 16:56 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-09-19 16:56 ------- Subject: Bug 23941 CVSROOT: /cvs/gcc Module name: gcc Branch: gcc-4_0-branch Changes by: rth@gcc.gnu.org 2005-09-19 16:56:24 Modified files: gcc : ChangeLog real.c Added files: gcc/testsuite/gcc.c-torture/execute: pr23941.c Log message: PR 23941 * real.c (exact_real_truncate): Return false if the format cannot represent the number as a normal. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.431&r2=2.7592.2.432 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/real.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.151&r2=1.151.8.1 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/pr23941.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23941 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/23941] compress_float_constant creates denormals 2005-09-18 7:24 [Bug rtl-optimization/23941] New: compress_float_constant creates denormals rth at gcc dot gnu dot org 2005-09-18 7:24 ` [Bug rtl-optimization/23941] " rth at gcc dot gnu dot org 2005-09-19 16:56 ` cvs-commit at gcc dot gnu dot org @ 2005-09-19 17:02 ` cvs-commit at gcc dot gnu dot org 2005-09-19 17:10 ` rth at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2005-09-19 17:02 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-09-19 17:01 ------- Subject: Bug 23941 CVSROOT: /cvs/gcc Module name: gcc Changes by: rth@gcc.gnu.org 2005-09-19 17:01:41 Modified files: gcc : ChangeLog real.c Added files: gcc/testsuite/gcc.c-torture/execute: pr23941.c Log message: PR 23941 * real.c (exact_real_truncate): Return false if the format cannot represent the number as a normal. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/pr23941.c.diff?cvsroot=gcc&r1=1.1&r2=1.2 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9979&r2=2.9980 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/real.c.diff?cvsroot=gcc&r1=1.157&r2=1.158 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23941 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/23941] compress_float_constant creates denormals 2005-09-18 7:24 [Bug rtl-optimization/23941] New: compress_float_constant creates denormals rth at gcc dot gnu dot org ` (2 preceding siblings ...) 2005-09-19 17:02 ` cvs-commit at gcc dot gnu dot org @ 2005-09-19 17:10 ` rth at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: rth at gcc dot gnu dot org @ 2005-09-19 17:10 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From rth at gcc dot gnu dot org 2005-09-19 17:10 ------- Fixed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED Target Milestone|--- |4.0.2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23941 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-09-19 17:10 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2005-09-18 7:24 [Bug rtl-optimization/23941] New: compress_float_constant creates denormals rth at gcc dot gnu dot org 2005-09-18 7:24 ` [Bug rtl-optimization/23941] " rth at gcc dot gnu dot org 2005-09-19 16:56 ` cvs-commit at gcc dot gnu dot org 2005-09-19 17:02 ` cvs-commit at gcc dot gnu dot org 2005-09-19 17:10 ` rth at gcc dot gnu dot org
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