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| author | Jim Wilson <wilson@gcc.gnu.org> | 1992-09-24 22:33:07 -0700 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1992-09-24 22:33:07 -0700 |
| commit | a9fb8bb9590ac49cfe0dd70856311e523dfe13eb (patch) | |
| tree | 4ee60e325424160ce5f02016ca51f941749cb300 | |
| parent | 1154b096fa7adf994299811ab5824de6c77e1f68 (diff) | |
| download | gcc-a9fb8bb9590ac49cfe0dd70856311e523dfe13eb.zip gcc-a9fb8bb9590ac49cfe0dd70856311e523dfe13eb.tar.gz gcc-a9fb8bb9590ac49cfe0dd70856311e523dfe13eb.tar.bz2 | |
(movti): Split CONST_INTs into 4 moves, and force all other constants to
memory.
From-SVN: r2236
| -rw-r--r-- | gcc/config/a29k/a29k.md | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/config/a29k/a29k.md b/gcc/config/a29k/a29k.md index 8f73924..06fe6f1 100644 --- a/gcc/config/a29k/a29k.md +++ b/gcc/config/a29k/a29k.md @@ -2254,6 +2254,35 @@ { if (GET_CODE (operands[0]) == MEM) operands[1] = force_reg (TImode, operands[1]); + + /* We can't handle constants in general because there is no rtl to represent + 128 bit constants. Splitting happens to work for CONST_INTs so we split + them for good code. Other constants will get forced to memory. */ + + if (GET_CODE (operands[1]) == CONST_INT) + { + rtx part0, part1, part2, part3; + + part0 = operand_subword (operands[0], 0, 1, TImode); + part1 = operand_subword (operands[0], 1, 1, TImode); + part2 = operand_subword (operands[0], 2, 1, TImode); + part3 = operand_subword (operands[0], 3, 1, TImode); + + emit_move_insn (part0, const0_rtx); + emit_move_insn (part1, const0_rtx); + emit_move_insn (part2, const0_rtx); + emit_move_insn (part3, const0_rtx); + + DONE; + } + else if (CONSTANT_P (operands[1])) + { + operands[1] = force_const_mem (TImode, operands[1]); + if (! memory_address_p (TImode, XEXP (operands[1], 0)) + && ! reload_in_progress) + operands[1] = change_address (operands[1], TImode, + XEXP (operands[1], 0)); + } }") ;; For compare operations, we simply store the comparison operands and |