diff options
| author | Jim Wilson <wilson@gcc.gnu.org> | 1997-06-15 17:45:02 -0700 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1997-06-15 17:45:02 -0700 |
| commit | 119f2738a65cad2dd277c5c86cd10efb3f503d73 (patch) | |
| tree | 8b6a3b9556f3b0689d15c839594f28c84bf49104 /gcc/config/mips | |
| parent | ef76d03b8af2720923b55595bf516e26341d0977 (diff) | |
| download | gcc-119f2738a65cad2dd277c5c86cd10efb3f503d73.tar.gz | |
(mips_expand_prologue): If tsize_rtx is large_int...
(mips_expand_prologue): If tsize_rtx is large_int, emit two
insns instead of one splitable insn, setting RTX_FRAME_RELATED_P.
From-SVN: r14249
Diffstat (limited to 'gcc/config/mips')
| -rw-r--r-- | gcc/config/mips/mips.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c index b97e0f65710..fee0408a8d0 100644 --- a/gcc/config/mips/mips.c +++ b/gcc/config/mips/mips.c @@ -5443,8 +5443,25 @@ mips_expand_prologue () if (tsize > 32767) { tmp_rtx = gen_rtx (REG, Pmode, MIPS_TEMP1_REGNUM); - insn = emit_move_insn (tmp_rtx, tsize_rtx); - RTX_FRAME_RELATED_P (insn) = 1; + + /* Instruction splitting doesn't preserve the RTX_FRAME_RELATED_P + bit, so make sure that we don't emit anything that can be + split. */ + if (large_int (tsize_rtx)) + { + insn = emit_move_insn (tmp_rtx, + GEN_INT (tsize & 0xffff0000)); + RTX_FRAME_RELATED_P (insn) = 1; + insn = emit_insn (gen_iorsi3 (tmp_rtx, tmp_rtx, + GEN_INT (tsize & 0x0000ffff))); + RTX_FRAME_RELATED_P (insn) = 1; + } + else + { + insn = emit_move_insn (tmp_rtx, tsize_rtx); + RTX_FRAME_RELATED_P (insn) = 1; + } + tsize_rtx = tmp_rtx; } |