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[Bug target/42536] [4.4/4.5 regression] ICE in spill_failure, at reload1.c:2141
- From: "jakub 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 Jan 2010 14:30:25 -0000
- Subject: [Bug target/42536] [4.4/4.5 regression] ICE in spill_failure, at reload1.c:2141
- References: <bug-42536-5724@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from jakub at gcc dot gnu dot org 2010-01-02 14:30 -------
With 3 register vars in the function (ebx, edi, esi) on the register starved
ix86 the error is tollerable. From the 8 registers the programmer takes 3,
%esp is fixed, without -fomit-frame-pointer %ebp is fixed too, which leaves
just %eax, %edx and %ecx for register allocation. Even if this happens to
compile, the result can't work fast, as almost all insns need to have
temporaries spilled and reread back.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42536