diff options
| author | J"orn Rennecke <amylaar@cygnus.co.uk> | 1999-03-02 16:42:59 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 1999-03-02 16:42:59 +0000 |
| commit | 0aa692fc03e59a5794e4386d7a9e87ec085704a1 (patch) | |
| tree | 0e4d660fb4bb3bfff571922c818be5d2aa55cf32 | |
| parent | 4ed9f2126ddc0f9095b464d3f5b27401da11b5fb (diff) | |
| download | gcc-0aa692fc03e59a5794e4386d7a9e87ec085704a1.zip gcc-0aa692fc03e59a5794e4386d7a9e87ec085704a1.tar.gz gcc-0aa692fc03e59a5794e4386d7a9e87ec085704a1.tar.bz2 | |
sh.c (force_into): New function.
* sh.c (force_into): New function.
(expand_block_move): Use it.
From-SVN: r25540
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/sh/sh.c | 28 |
2 files changed, 25 insertions, 8 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c50fc72..03315c6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Wed Mar 3 00:00:37 1999 J"orn Rennecke <amylaar@cygnus.co.uk> + + * sh.c (force_into): New function. + (expand_block_move): Use it. + Tue Mar 2 10:39:43 1999 Nick Clifton <nickc@cygnus.com> * cccp.c (struct default_include): Add 'included' field. diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index 6ddf439..180cce2 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -305,6 +305,18 @@ print_operand (stream, x, code) } } +static void force_into PROTO ((rtx, rtx)); + +/* Like force_operand, but guarantees that VALUE ends up in TARGET. */ +static void +force_into (value, target) + rtx value, target; +{ + value = force_operand (value, target); + if (! rtx_equal_p (value, target)) + emit_insn (gen_move_insn (target, value)); +} + /* Emit code to perform a block move. Choose the best method. OPERANDS[0] is the destination. @@ -342,8 +354,8 @@ expand_block_move (operands) = copy_to_mode_reg (Pmode, gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (entry_name))); - emit_insn (gen_move_insn (r4, XEXP (operands[0], 0))); - emit_insn (gen_move_insn (r5, XEXP (operands[1], 0))); + force_into (XEXP (operands[0], 0), r4); + force_into (XEXP (operands[1], 0), r5); emit_insn (gen_block_move_real_i4 (func_addr_rtx)); return 1; } @@ -363,8 +375,8 @@ expand_block_move (operands) = copy_to_mode_reg (Pmode, gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (entry_name))); - emit_insn (gen_move_insn (r4, XEXP (operands[0], 0))); - emit_insn (gen_move_insn (r5, XEXP (operands[1], 0))); + force_into (XEXP (operands[0], 0), r4); + force_into (XEXP (operands[1], 0), r5); dwords = bytes >> 3; emit_insn (gen_move_insn (r6, GEN_INT (dwords - 1))); @@ -389,8 +401,8 @@ expand_block_move (operands) = copy_to_mode_reg (Pmode, gen_rtx (SYMBOL_REF, Pmode, IDENTIFIER_POINTER (entry_name))); - emit_insn (gen_move_insn (r4, XEXP (operands[0], 0))); - emit_insn (gen_move_insn (r5, XEXP (operands[1], 0))); + force_into (XEXP (operands[0], 0), r4); + force_into (XEXP (operands[1], 0), r5); emit_insn (gen_block_move_real (func_addr_rtx)); return 1; } @@ -411,8 +423,8 @@ expand_block_move (operands) = copy_to_mode_reg (Pmode, gen_rtx (SYMBOL_REF, Pmode, IDENTIFIER_POINTER (entry_name))); - emit_insn (gen_move_insn (r4, XEXP (operands[0], 0))); - emit_insn (gen_move_insn (r5, XEXP (operands[1], 0))); + force_into (XEXP (operands[0], 0), r4); + force_into (XEXP (operands[1], 0), r5); /* r6 controls the size of the move. 16 is decremented from it for each 64 bytes moved. Then the negative bit left over is used |