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[committed] hppa: Add new shift/add patterns

From: John David Anglin <dave dot anglin at bell dot net>
To: "gcc-patches at gcc dot gnu dot org Patches" <gcc-patches at gcc dot gnu dot org>
Date: Tue, 1 Nov 2016 14:29:15 -0400
Subject: [committed] hppa: Add new shift/add patterns
Authentication-results: sourceware.org; auth=none

The attached change fixes an obscure reload problem compiling hash.c in racket-6.7.  This occurs
when we to load the address of a DFmode MEM with a scaled-indexed address to integer registers.
Although we prefer ASHIFT to MULT, MULT is still used in memory addresses and we need to handle
this form either directly as an insn pattern or as a secondary reload.

Tested on hppa-unknown-linux-gnu and hppa64-hp-hpux11.11.  Committed to trunk and gcc-6 branch.

Dave
--
John David Anglin	dave.anglin@bell.net

Attachment: pa.md.d.txt
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