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From: jean-marc.valin@hermes.usherb.ca To: gcc-gnats@gcc.gnu.org Subject: c/8364: unable to find a register to spill in class `FLOAT_REGS' Date: Sat, 26 Oct 2002 00:16:00 -0000 [thread overview] Message-ID: <20021026071314.22597.qmail@sources.redhat.com> (raw) >Number: 8364 >Category: c >Synopsis: unable to find a register to spill in class `FLOAT_REGS' >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: ice-on-legal-code >Submitter-Id: net >Arrival-Date: Sat Oct 26 00:16:01 PDT 2002 >Closed-Date: >Last-Modified: >Originator: ? >Release: gcc 3.1 (and 3.2) >Organization: >Environment: Linux/x86 (RedHat 7.2) >Description: When compiling a (valid) C file with -march=pentium4, I get an internal compiler error: crash_gcc.c: In function `split_cb_search_shape_sign': crash_gcc.c:86: unable to find a register to spill in class `FLOAT_REGS' crash_gcc.c:86: this is the insn: (insn 157 154 158 (set (reg:SF 8 st(0) [99]) (subreg:SF (reg/v:DI 21 rxmm0 [75]) 0)) 90 {*movsf_1} (nil) (nil)) crash_gcc.c:86: confused by earlier errors, bailing out This does not happen when I don't compile for pentium4. The file I attached was simplified as much as I could (it doesn't do anything useful anymore, but it's valid) but it doesn't seem like the problem is related to a single statement. Also, depending on the exact content, I sometime get this error instead: Internal compiler error in ix86_secondary_memory_needed, at config/i386/i386.c:12251 >How-To-Repeat: gcc -march=pentium4 -O2 -c crash_gcc.c >Fix: ? >Release-Note: >Audit-Trail: >Unformatted: ----gnatsweb-attachment---- Content-Type: application/octet-stream; name="crash_gcc.c" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="crash_gcc.c" Cgp0eXBlZGVmIHN0cnVjdCBzcGxpdF9jYl9wYXJhbXMgewogICBpbnQgICAgIHN1YnZlY3Rfc2l6 ZTsKICAgaW50ICAgICBuYl9zdWJ2ZWN0OwogICBmbG9hdCAgKnNoYXBlX2NiOwogICBpbnQgICAg IHNoYXBlX2JpdHM7Cn0gc3BsaXRfY2JfcGFyYW1zOwoKCnZvaWQgc3BsaXRfY2Jfc2VhcmNoX3No YXBlX3NpZ24oCmZsb2F0IHRhcmdldFtdLAkJCS8qIHRhcmdldCB2ZWN0b3IgKi8Kdm9pZCAqcGFy LCAgICAgICAgICAgICAgICAgICAgICAvKiBDb2RlYm9vay9zZWFyY2ggcGFyYW1ldGVycyovCmlu dCAgIHAsICAgICAgICAgICAgICAgICAgICAgICAgLyogbnVtYmVyIG9mIExQQyBjb2VmZnMgKi8K aW50ICAgbnNmLCAgICAgICAgICAgICAgICAgICAgICAvKiBudW1iZXIgb2Ygc2FtcGxlcyBpbiBz dWJmcmFtZSAqLwpmbG9hdCAqZXhjCikKewogICBpbnQgaSxqOwogICBmbG9hdCByZXNwWzQwXTsK ICAgZmxvYXQgdFs0MF0sIEVbNjRdOwogICBmbG9hdCAqc2hhcGVfY2I7CiAgIGludCBzaGFwZV9j Yl9zaXplLCBzdWJ2ZWN0X3NpemUsIG5iX3N1YnZlY3Q7CiAgIHNwbGl0X2NiX3BhcmFtcyAqcGFy YW1zOwoKICAgcGFyYW1zID0gKHNwbGl0X2NiX3BhcmFtcyAqKSBwYXI7CiAgIHN1YnZlY3Rfc2l6 ZSA9IHBhcmFtcy0+c3VidmVjdF9zaXplOwogICBuYl9zdWJ2ZWN0ID0gcGFyYW1zLT5uYl9zdWJ2 ZWN0OwogICBzaGFwZV9jYl9zaXplID0gMTw8cGFyYW1zLT5zaGFwZV9iaXRzOwogICBzaGFwZV9j YiA9IHBhcmFtcy0+c2hhcGVfY2I7CiAgIAoKICAgZm9yIChpPTA7aTxuYl9zdWJ2ZWN0O2krKykK ICAgewogICAgICBpbnQgYmVzdF9pbmRleFsyXT17MCwwfSwgazsKICAgICAgZmxvYXQgZGlzdCwg YmVzdF9kaXN0WzJdPXstMSwtMX0sIGJlc3Rfc2lnblsyXT17MCwwfTsKICAgICAgZmxvYXQgKmEs ICp4OwogICAgICBmbG9hdCBlbmVyZ3k9MDsKICAgICAgeD10K3N1YnZlY3Rfc2l6ZSppOwoKICAg ICAgLyogRmluZCBiZXN0IGNvZGV3b3JkIGZvciBjdXJyZW50IHN1Yi12ZWN0b3IgKi8KICAgICAg Zm9yIChqPTA7ajxzaGFwZV9jYl9zaXplO2orKykKICAgICAgewogICAgICAgICBpbnQgc2lnbjsK ICAgICAgICAgZGlzdD0wOwogICAgICAgICBhPXJlc3AraipzdWJ2ZWN0X3NpemU7CiAgICAgICAg IGRpc3Q9MDsKICAgICAgICAgZm9yIChrPTA7azxzdWJ2ZWN0X3NpemU7aysrKQogICAgICAgICAg ICBkaXN0IC09IDIqYVtrXSp4W2tdOwogICAgICAgICBkaXN0ICs9IGVuZXJneStFW2pdOwogICAg ICAgICBpZiAoZGlzdDxiZXN0X2Rpc3RbMF0gfHwgYmVzdF9kaXN0WzBdPDApCiAgICAgICAgIHsK ICAgICAgICAgICAgYmVzdF9kaXN0WzFdPWJlc3RfZGlzdFswXTsKICAgICAgICAgICAgYmVzdF9p bmRleFsxXT1iZXN0X2luZGV4WzBdOwogICAgICAgICAgICBiZXN0X3NpZ25bMV09YmVzdF9zaWdu WzBdOwogICAgICAgICAgICBiZXN0X2Rpc3RbMF09ZGlzdDsKICAgICAgICAgICAgYmVzdF9pbmRl eFswXT1qOwogICAgICAgICAgICBiZXN0X3NpZ25bMF09c2lnbjsKICAgICAgICAgfQogICAgICB9 CiAgICAgIGlmIChpPG5iX3N1YnZlY3QtMSkKICAgICAgewogICAgICAgICBpbnQgbmJlc3Q7CiAg ICAgICAgIGZvciAobmJlc3Q9MDtuYmVzdDwyO25iZXN0KyspCiAgICAgICAgIHsKICAgICAgICAg ICAgICAgeD10K3N1YnZlY3Rfc2l6ZSooaSsxKTsKICAgICAgICAgICAgICAgZm9yIChqPTA7ajxz aGFwZV9jYl9zaXplO2orKykKICAgICAgICAgICAgICAgewogICAgICAgICAgICAgICAgICBhPXJl c3AraipzdWJ2ZWN0X3NpemU7CiAgICAgICAgICAgICAgICAgIGRpc3QgPSAwOwogICAgICAgICAg ICAgICAgICBmb3IgKGs9MDtrPHN1YnZlY3Rfc2l6ZTtrKyspCiAgICAgICAgICAgICAgICAgICAg IGRpc3QgLT0gMiphW2tdKnhba107CiAgICAgICAgICAgICAgICAgIGRpc3QgKz0gZW5lcmd5K0Vb al07CiAgICAgICAgICAgICAgIH0KICAgICAgICAgICAgICAgCgogICAgICAgICB9CgoKICAgICAg fQoKICAgfQogICAKCiAgIAp9Cg==
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