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[Bug target/40741] code size explosion for integer comparison
- From: "bonzini at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Oct 2009 10:17:52 -0000
- Subject: [Bug target/40741] code size explosion for integer comparison
- References: <bug-40741-17659@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from bonzini at gnu dot org 2009-10-28 10:17 -------
Subject: Bug 40741
Author: bonzini
Date: Wed Oct 28 10:17:29 2009
New Revision: 153650
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=153650
Log:
2009-10-28 Paolo Bonzini <bonzini@gnu.org>
PR rtl-optimization/40741
* config/arm/arm.c (thumb1_rtx_costs): IOR or XOR with
a small constant is cheap.
* config/arm/arm.md (andsi3, iorsi3): Try to place the result of
force_reg on the LHS.
(xorsi3): Likewise, and split the XOR if the constant is complex
and not in Thumb mode.
2009-10-28 Paolo Bonzini <bonzini@gnu.org>
PR rtl-optimization/40741
* gcc.target/arm/thumb-branch1.c: New.
Added:
trunk/gcc/testsuite/gcc.target/arm/thumb-branch1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
trunk/gcc/config/arm/arm.md
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40741