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From: "steven at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug optimization/13718] Miscompilation of comparison of complex values Date: Sat, 17 Jan 2004 14:33:00 -0000 [thread overview] Message-ID: <20040117143321.2107.qmail@sources.redhat.com> (raw) In-Reply-To: <20040117140859.13718.pbrook@gcc.gnu.org> ------- Additional Comments From steven at gcc dot gnu dot org 2004-01-17 14:33 ------- Yup. Dump "t.c.t22.complex": ;; Function foo (foo) foo (a, b) { complex float T.2; complex float T.1; <bb 0>: T.1 = *a_1; T.2 = *b_4; if (T.1 != T.2) goto <L0>; else goto <L1>; <L0>:; abort (); <L1>:; return; } Dump "t.c.t23.sra": Scalar replacements for foo: __real__ T.1 -> SR.4 __imag__ T.1 -> SR.5 __real__ T.2 -> SR.6 __imag__ T.2 -> SR.7 ;; Function foo (foo) foo (a, b) { float SR.7; float SR.6; float SR.5; float SR.4; complex float T.2; complex float T.1; <bb 0>: SR.4_6 = REALPART_EXPR <*a_1>; SR.5_3 = IMAGPART_EXPR <*a_1>; SR.6_8 = REALPART_EXPR <*b_4>; SR.7_9 = IMAGPART_EXPR <*b_4>; if (T.1 != T.2) goto <L0>; else goto <L1>; <L0>:; abort (); <L1>:; return; } Dump "t.c.t25.dce3": ;; Function foo (foo) foo (a, b) { float SR.7; float SR.6; float SR.5; float SR.4; complex float T.2; complex float T.1; <bb 0>: if (T.1 != T.2) goto <L0>; else goto <L1>; <L0>:; abort (); <L1>:; return; } Now where did the assignments go? BTW why isn't T.1 != T.2 folded to compare the real and imag parts? -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed| |1 Last reconfirmed|0000-00-00 00:00:00 |2004-01-17 14:33:20 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13718
next prev parent reply other threads:[~2004-01-17 14:33 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2004-01-17 14:09 [Bug optimization/13718] New: " pbrook at gcc dot gnu dot org 2004-01-17 14:33 ` steven at gcc dot gnu dot org [this message] 2004-01-17 15:00 ` [Bug optimization/13718] " steven at gcc dot gnu dot org 2004-01-17 20:30 ` [Bug optimization/13718] [tree-ssa] " pinskia at gcc dot gnu dot org 2004-01-17 20:51 ` cvs-commit at gcc dot gnu dot org 2004-01-17 20:55 ` rth at gcc dot gnu dot org 2004-01-17 21:00 ` pinskia at gcc dot gnu dot org
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