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Free variable local allocs at block ends.

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* config/microblaze/microblaze.md (save_stack_block): Define.
   (restore_stack_block): Likewise.

From-SVN: r196110
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Edgar E. Iglesias 2013-02-17 16:18:09 +00:00 committed by Michael Eager
parent 162ceab464
commit 825527e8a6
2 changed files with 31 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2013-02-17 Edgar E. Iglesias <edgar.iglesias@gmail.com>
* config/microblaze/microblaze.md (save_stack_block): Define.
(restore_stack_block): Likewise.
2013-02-16 Edgar E. Iglesias <edgar.iglesias@gmail.com>
* config/microblaze/linux.h (TARGET_SUPPORTS_PIC): Define as 1.

26
gcc/config/microblaze/microblaze.md
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@ -1860,6 +1860,32 @@
}
)
(define_expand "save_stack_block"
[(match_operand 0 "register_operand" "")
(match_operand 1 "register_operand" "")]
""
{
emit_move_insn (operands[0], operands[1]);
DONE;
}
)
(define_expand "restore_stack_block"
[(match_operand 0 "register_operand" "")
(match_operand 1 "register_operand" "")]
""
{
rtx retaddr = gen_rtx_MEM (Pmode, stack_pointer_rtx);
rtx rtmp = gen_rtx_REG (SImode, R_TMP);
/* Move the retaddr. */
emit_move_insn (rtmp, retaddr);
emit_move_insn (operands[0], operands[1]);
emit_move_insn (gen_rtx_MEM (Pmode, operands[0]), rtmp);
DONE;
}
)
;; Trivial return. Make it look like a normal return insn as that
;; allows jump optimizations to work better .
(define_expand "return"