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[Bug rtl-optimization/69847] Spec 2006 403.gcc slows down with -mlra vs. reload on PowerPC
- From: "mwahab at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 05 Aug 2016 09:01:58 +0000
- Subject: [Bug rtl-optimization/69847] Spec 2006 403.gcc slows down with -mlra vs. reload on PowerPC
- Auto-submitted: auto-generated
- References: <bug-69847-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69847
--- Comment #24 from mwahab at gcc dot gnu.org ---
Created attachment 39055
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39055&action=edit
Testcase for ICE on arm targets
Attached vshuf-v64qi.i for the ICE on arm targets.
The failure is triggered with -mfloat-abi=hard -O1.
The cc1 command line is:
----
cc1 vshuf-v64qi.i -mfloat-abi=hard -O1
----
The float-abi option is suspicious but I get the same failure when
-march=armv8-a -mfpu=neon-fp-armv8 is added so I don't think that it's the lack
of FP registers that's the problem.
Matthew