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target/9612: Compiler fails using "-O2 -march=pentium4", succeeds with "-O2 -march=i686" or "-march=pentium4"

From: Graeme dot Ambler at bristol dot ac dot uk
To: gcc-gnats at gcc dot gnu dot org
Date: 7 Feb 2003 14:21:16 -0000
Subject: target/9612: Compiler fails using "-O2 -march=pentium4", succeeds with "-O2 -march=i686" or "-march=pentium4"
Reply-to: Graeme dot Ambler at bristol dot ac dot uk
>Number:         9612
>Category:       target
>Synopsis:       Compiler fails using "-O2 -march=pentium4", succeeds with "-O2 -march=i686" or "-march=pentium4"
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Fri Feb 07 14:26:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     Graeme Ambler, University of Bristol
>Release:        3.2.2
>Organization:
>Environment:
RedHat Linux 7.3 with all updates.  GCC configured with options
>Description:
$ gcc -c -O2 -march=pentium4 compute.c
compute.c: In function `generate_sector':
compute.c:175: unable to find a register to spill in class `FLOAT_REGS'
compute.c:175: this is the insn:
(insn 151 294 155 (set (reg:DF 9 st(1) [104])
        (float_extend:DF (subreg:SF (reg/v:DI 21 rxmm0 [79]) 0))) 133 {*extendsfdf2_1} (nil)
    (nil))
compute.c:175: confused by earlier errors, bailing out
$ 
>How-To-Repeat:
gcc -c -O2 -march=pentium4 compute.c
>Fix:
gcc -c -O2 -march=i686 compute.c
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
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Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="compute.c"

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