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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/55943] [4.6/4.7/4.8/4.9 Regression] ICE in gen_reg_rtx Date: Sat, 16 Mar 2013 13:18:00 -0000 [thread overview] Message-ID: <bug-55943-4-NA2LicjyxL@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-55943-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55943 John David Anglin <danglin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target|ia64-*-* |ia64-*-*,hppa*64*-*-* CC| |danglin at gcc dot gnu.org --- Comment #4 from John David Anglin <danglin at gcc dot gnu.org> 2013-03-16 13:17:17 UTC --- I believe the problem is in this hunk of code: /* See if we can coerce the target into moving both values at once. */ /* Move floating point as parts. */ if (GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT && can_create_pseudo_p () && optab_handler (mov_optab, GET_MODE_INNER (mode)) != CODE_FOR_nothing) try_int = false; /* Not possible if the values are inherently not adjacent. */ else if (GET_CODE (x) == CONCAT || GET_CODE (y) == CONCAT) try_int = false; /* Is possible if both are registers (or subregs of registers). */ else if (register_operand (x, mode) && register_operand (y, mode)) try_int = true; /* If one of the operands is a memory, and alignment constraints are friendly enough, we may be able to do combined memory operations. We do not attempt this if Y is a constant because that combination is usually better with the by-parts thing below. */ else if ((MEM_P (x) ? !CONSTANT_P (y) : MEM_P (y)) && (!STRICT_ALIGNMENT || get_mode_alignment (mode) == BIGGEST_ALIGNMENT)) try_int = true; else try_int = false; When the inner mode is smaller than a word, a pseudo is needed to extract the value. The asm causes this to occur after reload starts, causing the ICE.
next prev parent reply other threads:[~2013-03-16 13:18 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-01-11 17:35 [Bug middle-end/55943] New: " schwab@linux-m68k.org 2013-01-14 13:24 ` [Bug middle-end/55943] [4.8 Regression] " rguenth at gcc dot gnu.org 2013-01-14 15:45 ` [Bug middle-end/55943] [4.6/4.7/4.8 " jakub at gcc dot gnu.org 2013-02-07 21:13 ` aldyh at gcc dot gnu.org 2013-02-08 15:10 ` rguenth at gcc dot gnu.org 2013-03-16 13:18 ` danglin at gcc dot gnu.org [this message] 2013-03-16 13:20 ` [Bug middle-end/55943] [4.6/4.7/4.8/4.9 " danglin at gcc dot gnu.org 2013-03-22 14:42 ` jakub at gcc dot gnu.org 2013-05-31 10:58 ` [Bug middle-end/55943] [4.7/4.8/4.9 " jakub at gcc dot gnu.org 2013-10-16 9:48 ` jakub at gcc dot gnu.org 2014-03-27 1:04 ` danglin at gcc dot gnu.org 2014-05-22 9:01 ` [Bug middle-end/55943] [4.7/4.8/4.9/4.10 " rguenth at gcc dot gnu.org 2014-12-19 13:25 ` [Bug rtl-optimization/55943] [4.8/4.9/5 " jakub at gcc dot gnu.org 2015-06-23 8:14 ` [Bug rtl-optimization/55943] [4.8/4.9/5/6 " rguenth at gcc dot gnu.org 2015-06-26 19:52 ` [Bug rtl-optimization/55943] [4.9/5/6 " jakub at gcc dot gnu.org 2015-06-26 20:26 ` jakub at gcc dot gnu.org
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