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From: jbeulich@novell.com To: gcc-gnats@gcc.gnu.org Subject: middle-end/7285: unsigned-to-floating conversion not IA64 spec conformant Date: Fri, 12 Jul 2002 04:56:00 -0000 [thread overview] Message-ID: <20020712115312.23620.qmail@sources.redhat.com> (raw) >Number: 7285 >Category: middle-end >Synopsis: unsigned-to-floating conversion not IA64 spec conformant >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Fri Jul 12 04:56:00 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Jan Beulich >Release: 3.1 >Organization: >Environment: Cross compiler hosted on Cygwin/Win2K >Description: Since fcvt.xuf is an alias of fnorm (and hence pf fma), it will always raise the denormal/unnormal exception (or if disabled, set the status flag in ar.fpsr), but since this is not intended, fpsr.sf1 should be used for these conversions rather than fpsr.sf0. This is then consistent with fcvt.xf, which never raises any exception. >How-To-Repeat: Compile code like long double test(unsigned long long x) {return x;} examine the result, and compare with the equivalent code generated by Intel's compiler. >Fix: Add the .sf1 completer to all three floatunsdi?f2 insn-s in ia64.md. >Release-Note: >Audit-Trail: >Unformatted:
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