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[Bug middle-end/53381] [4.8 Regression] Bootstrap fails building stage1 libgcc
- From: "dave.anglin at bell dot net" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 17 May 2012 14:39:41 +0000
- Subject: [Bug middle-end/53381] [4.8 Regression] Bootstrap fails building stage1 libgcc
- Auto-submitted: auto-generated
- References: <bug-53381-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53381
--- Comment #9 from dave.anglin at bell dot net 2012-05-17 14:39:41 UTC ---
On 5/17/2012 2:48 AM, jakub at gcc dot gnu.org wrote:
> Note that e.g. dse.c (scan_insn) handles the AVX mem* just fine, but won't
> handle this PA pattern because (set (reg) (call ...)) isn't the first thing in
> the parallel. Any reason for that?
There is no reason other than the RTL was trying to reflect the save and
restore of the
PIC register. I hacked the call patterns to completely hide the
handling of the PIC register
until they are split after reload. So far, testing looks ok.