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[Bug target/40615] unnecessary CSE
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 2 Jul 2009 09:15:51 -0000
- Subject: [Bug target/40615] unnecessary CSE
- References: <bug-40615-17659@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from steven at gcc dot gnu dot org 2009-07-02 09:15 -------
Is there a C test case? Can you add objdump of the gcc-generated asm and the
fixed asm to show the impact on code size? (/me is surprised that 3*"add
r0,sp,4" is smaller than 1**"add r0,sp,4"+3*"mov r0,r4"... Thumb is amazing :-)
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40615