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author | Segher Boessenkool <segher@kernel.crashing.org> | 2014-05-08 00:00:58 +0200 |
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committer | Segher Boessenkool <segher@gcc.gnu.org> | 2014-05-08 00:00:58 +0200 |
commit | d839f53b7dfd86250420bce15382c98cbd43b4ec (patch) | |
tree | cd8a170e4a1bf065792be21e8461f7608f25a897 /boehm-gc | |
parent | d3b4df0b173c3ad5f1e8f5d9f6a5df3518322129 (diff) | |
download | gcc-d839f53b7dfd86250420bce15382c98cbd43b4ec.tar.gz |
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).
From-SVN: r210190
Diffstat (limited to 'boehm-gc')
0 files changed, 0 insertions, 0 deletions