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From: "hjl at lucon dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/32293] [4.3 Regression] internal compiler error: in do_SUBST, at combine.c:502 Date: Tue, 12 Jun 2007 03:03:00 -0000 [thread overview] Message-ID: <20070612030320.29574.qmail@sourceware.org> (raw) In-Reply-To: <bug-32293-682@http.gcc.gnu.org/bugzilla/> ------- Comment #8 from hjl at lucon dot org 2007-06-12 03:03 ------- Here is the reduced testcase: --- unsigned int _IDEC_glbround; unsigned int _IDEC_glbflags; typedef unsigned UINT32; typedef signed SINT32; typedef unsigned long long UINT64; typedef signed long long SINT64; typedef __attribute__ ((aligned(16))) struct { UINT64 w[2]; } UINT128; static __inline UINT64 unpack_BID128 (UINT64 * psign_x, int *pexponent_x, UINT128 * pcoefficient_x, UINT128 * px) { UINT128 coeff; UINT64 ex; *psign_x = (px->w[1]) & 0x8000000000000000ull; ex = (px->w[1]) >> 49; *pexponent_x = ((int) ex) & 0x3fff; return coeff.w[0] | coeff.w[1]; } static __inline UINT32 get_BID32 (UINT32 sgn, int expon, UINT64 coeff, int rmode, unsigned *fpsc) { UINT32 r; if (((unsigned) expon) > 191) { r = sgn | 0x78000000ul; switch (rmode) { case 0x00002: if (sgn) r = sgn | 0x77f8967f; } return r; } r = expon; return r; } UINT32 bid128_to_bid32 (UINT128 x) { UINT128 *px; UINT128 CX; UINT64 sign_x; UINT32 res; int exponent_x = 0; px = &x; if (!unpack_BID128 (&sign_x, &exponent_x, &CX, px)) { return(res); } res = get_BID32 ((UINT32) (sign_x >> 32), exponent_x, CX.w[0], _IDEC_glbround, &_IDEC_glbflags); return(res);; } --- -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32293
next prev parent reply other threads:[~2007-06-12 3:03 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2007-06-11 21:39 [Bug rtl-optimization/32293] New: " hjl at lucon dot org 2007-06-11 21:40 ` [Bug rtl-optimization/32293] " hjl at lucon dot org 2007-06-11 21:43 ` pinskia at gcc dot gnu dot org 2007-06-11 21:44 ` pinskia at gcc dot gnu dot org 2007-06-11 22:05 ` hjl at lucon dot org 2007-06-11 22:06 ` pinskia at gcc dot gnu dot org 2007-06-11 22:38 ` hjl at lucon dot org 2007-06-11 22:41 ` pinskia at gcc dot gnu dot org 2007-06-11 22:49 ` hjl at lucon dot org 2007-06-11 22:51 ` pinskia at gcc dot gnu dot org 2007-06-11 22:56 ` hjl at lucon dot org 2007-06-12 3:03 ` hjl at lucon dot org [this message] 2007-06-12 7:01 ` ubizjak at gmail dot com 2007-06-12 8:26 ` ubizjak at gmail dot com 2007-06-12 10:31 ` uros at gcc dot gnu dot org 2007-06-12 11:31 ` rguenth at gcc dot gnu dot org
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