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[Bug rtl-optimization/15792] missed subreg optimization
- From: "bangerth at dealii dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 15 Jun 2004 20:07:01 -0000
- Subject: [Bug rtl-optimization/15792] missed subreg optimization
- References: <20040603042727.15792.pinskia@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From bangerth at dealii dot org 2004-06-15 20:06 -------
Indeed. In test1, we get a completely bogus sequence:
movl 12(%ebp), %edx
movl 8(%ebp), %eax
movl %edx, %ecx
orl %eax, %ecx
What is the compiler thinking, moving data first into adx just to move
it further into ecx the next moment?
W.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2004-06-15 20:07:00
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15792