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| author | Alan Modra <amodra@gmail.com> | 2018-11-13 14:25:30 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gcc.gnu.org> | 2018-11-13 14:25:30 +1030 |
| commit | 7877f4e000e999a902cf2898a535ae8e8ad45a3f (patch) | |
| tree | 076d41a9e8b41926eb635d993ddc07e421d49d22 /gcc/config | |
| parent | c6459f2dfa63a6581233eb143b7614422c88b352 (diff) | |
| download | gcc-7877f4e000e999a902cf2898a535ae8e8ad45a3f.zip gcc-7877f4e000e999a902cf2898a535ae8e8ad45a3f.tar.gz gcc-7877f4e000e999a902cf2898a535ae8e8ad45a3f.tar.bz2 | |
[RS6000] secondary_reload and find_replacement
This patch removes a call only necessary when using reload. It also
corrects a PRE_DEC address offset.
* config/rs6000/rs6000.c (rs6000_secondary_reload_inner): Negate
offset for PRE_DEC.
(rs6000_secondary_reload_gpr): Don't call find_replacement.
From-SVN: r266049
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index e0b1bbb..516e697 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -19701,7 +19701,10 @@ rs6000_secondary_reload_inner (rtx reg, rtx mem, rtx scratch, bool store_p) if ((addr_mask & RELOAD_REG_PRE_INCDEC) == 0) { - emit_insn (gen_add2_insn (op_reg, GEN_INT (GET_MODE_SIZE (mode)))); + int delta = GET_MODE_SIZE (mode); + if (GET_CODE (addr) == PRE_DEC) + delta = -delta; + emit_insn (gen_add2_insn (op_reg, GEN_INT (delta))); new_addr = op_reg; } break; @@ -19901,17 +19904,6 @@ rs6000_secondary_reload_gpr (rtx reg, rtx mem, rtx scratch, bool store_p) && GET_CODE (XEXP (addr, 1)) == PLUS && XEXP (XEXP (addr, 1), 0) == XEXP (addr, 0)); scratch_or_premodify = XEXP (addr, 0); - if (!HARD_REGISTER_P (scratch_or_premodify)) - /* If we have a pseudo here then reload will have arranged - to have it replaced, but only in the original insn. - Use the replacement here too. */ - scratch_or_premodify = find_replacement (&XEXP (addr, 0)); - - /* RTL emitted by rs6000_secondary_reload_gpr uses RTL - expressions from the original insn, without unsharing them. - Any RTL that points into the original insn will of course - have register replacements applied. That is why we don't - need to look for replacements under the PLUS. */ addr = XEXP (addr, 1); } gcc_assert (GET_CODE (addr) == PLUS || GET_CODE (addr) == LO_SUM); |