| commit | 631c977b56234aef7d6242d09924f5a0a081cc64 | |
| author | segher <segher@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Wed, 7 May 2014 22:00:58 +0000 (7 22:00 +0000) | ||
| committer | segher <segher@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Wed, 7 May 2014 22:00:58 +0000 (7 22:00 +0000) | ||
| tree | cd8a170e4a1bf065792be21e8461f7608f25a897 | treesnapshot (tar.gz zip) |
| parent | a3ba513eef70417cc12a3cf01f8dc092162aa78b | commitdiff |
rs6000: New attributes for load/store: "sign_extend", "update" and "indexed"
The new attributes replace the instruction types *_ext*, *_u, *_ux.
This simplifies all code that does not care about the addressing modes,
putting the burden on the code that does care (mostly the scheduling
descriptions for certain CPUs).
It fixes a few minor bugs in the process.
The "update" and "indexed" attributes are automatic for any insn that
has a MEM as operand 0 or 1. Other insns have to set it manually, if
they do not like the default (which is "no"). Insns that are type
load/store/fpload/fpstore but have fewer than two operands need to set
it too, or the compiler will crash. There are very few of those.
This tries not to change semantics anywhere; in particular, the string
and multiple instructions set both "update" and "indexed" (although
they are neither).
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210190 138bc75d-0d04-0410-961f-82ee72b054a4
The new attributes replace the instruction types *_ext*, *_u, *_ux.
This simplifies all code that does not care about the addressing modes,
putting the burden on the code that does care (mostly the scheduling
descriptions for certain CPUs).
It fixes a few minor bugs in the process.
The "update" and "indexed" attributes are automatic for any insn that
has a MEM as operand 0 or 1. Other insns have to set it manually, if
they do not like the default (which is "no"). Insns that are type
load/store/fpload/fpstore but have fewer than two operands need to set
it too, or the compiler will crash. There are very few of those.
This tries not to change semantics anywhere; in particular, the string
and multiple instructions set both "update" and "indexed" (although
they are neither).
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210190 138bc75d-0d04-0410-961f-82ee72b054a4
31 files changed: