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| author | John Hassey <hassey@gnu.org> | 1993-02-18 03:05:08 +0000 |
|---|---|---|
| committer | John Hassey <hassey@gnu.org> | 1993-02-18 03:05:08 +0000 |
| commit | 7f8f7371d3e43dcb01b3f9428507e40fa923de57 (patch) | |
| tree | ded4d7a206a3cc4446f67a92a6f822d1d6508015 /gcc | |
| parent | abc1d3f177dd5824bb9c5bb99abd177c2ee6f5be (diff) | |
| download | gcc-7f8f7371d3e43dcb01b3f9428507e40fa923de57.zip gcc-7f8f7371d3e43dcb01b3f9428507e40fa923de57.tar.gz gcc-7f8f7371d3e43dcb01b3f9428507e40fa923de57.tar.bz2 | |
(emit_ldst): For large offsets use register index
instead of immediate.
From-SVN: r3484
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/m88k/m88k.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/config/m88k/m88k.c b/gcc/config/m88k/m88k.c index aec823a..c4718fb 100644 --- a/gcc/config/m88k/m88k.c +++ b/gcc/config/m88k/m88k.c @@ -2127,7 +2127,22 @@ emit_ldst (store_p, regno, mode, offset) int offset; { rtx reg = gen_rtx (REG, mode, regno); - rtx mem = gen_rtx (MEM, mode, plus_constant (stack_pointer_rtx, offset)); + rtx mem; + + if (SMALL_INTVAL (offset)) + { + mem = gen_rtx (MEM, mode, plus_constant (stack_pointer_rtx, offset)); + } + else + { + /* offset is too large for immediate index must use register */ + + rtx disp = gen_rtx (CONST_INT, VOIDmode, offset); + rtx temp = gen_rtx (REG, SImode, TEMP_REGNUM); + rtx regi = gen_rtx (PLUS, SImode, stack_pointer_rtx, temp); + emit_move_insn (temp, disp); + mem = gen_rtx (MEM, mode, regi); + } if (store_p) emit_move_insn (mem, reg); |