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| author | Michael Eager <eager@eagercon.com> | 2011-12-29 15:50:28 +0000 |
|---|---|---|
| committer | Michael Eager <eager@gcc.gnu.org> | 2011-12-29 15:50:28 +0000 |
| commit | 1893a69a50e1baae2fe767b9ab8c883588e87c0a (patch) | |
| tree | c9eab138ad6040d5dbd6d6f765fb1d0d20528606 | |
| parent | 10b293bbd0844afa8a500f535dbd4b3a010f5d81 (diff) | |
| download | gcc-1893a69a50e1baae2fe767b9ab8c883588e87c0a.zip gcc-1893a69a50e1baae2fe767b9ab8c883588e87c0a.tar.gz gcc-1893a69a50e1baae2fe767b9ab8c883588e87c0a.tar.bz2 | |
microblaze.md: Add expander for simple_return...
* config/microblaze/microblaze.md: Add expander for simple_return,
return, add return_internal and simple_return_internal insns.
From-SVN: r182725
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/microblaze/microblaze.md | 34 |
2 files changed, 31 insertions, 8 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4c8ff34..8b7c11e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-12-29 Michael Eager <eager@eagercon.com> + + * config/microblaze/microblaze.md: Add expander for simple_return, + return, add return_internal and simple_return_internal insns. + 2011-12-29 Oleg Endo <olegendo@gcc.gnu.org> * config/sh/sh.h (BRANCH_COST): Use sh_branch_cost variable. diff --git a/gcc/config/microblaze/microblaze.md b/gcc/config/microblaze/microblaze.md index 61ae2f7..a4c341f 100644 --- a/gcc/config/microblaze/microblaze.md +++ b/gcc/config/microblaze/microblaze.md @@ -82,6 +82,13 @@ ;; # instructions (4 bytes each) (define_attr "length" "" (const_int 4)) +(define_code_iterator any_return [return simple_return]) + +;; <optab> expands to the name of the optab for a particular code. +(define_code_attr optab [(return "return") + (simple_return "simple_return")]) + + ;;---------------------------------------------------- ;; Attribute describing the processor. ;;---------------------------------------------------- @@ -1936,9 +1943,21 @@ ;; Trivial return. Make it look like a normal return insn as that ;; allows jump optimizations to work better . -(define_insn "return" - [(return)] +(define_expand "return" + [(simple_return)] "microblaze_can_use_return_insn ()" + {} +) + +(define_expand "simple_return" + [(simple_return)] + "" + {} +) + +(define_insn "*<optab>" + [(any_return)] + "" { if (microblaze_is_interrupt_handler ()) return "rtid\tr14, 0\;%#"; @@ -1947,15 +1966,14 @@ } [(set_attr "type" "jump") (set_attr "mode" "none") - (set_attr "length" "4")]) + (set_attr "length" "4")] +) ;; Normal return. -;; We match any mode for the return address, so that this will work with -;; both 32 bit and 64 bit targets. -(define_insn "return_internal" - [(parallel [(use (match_operand:SI 0 "register_operand" "")) - (return)])] +(define_insn "<optab>_internal" + [(any_return) + (use (match_operand:SI 0 "register_operand" ""))] "" { if (microblaze_is_interrupt_handler ()) |