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| author | Jeff Law <law@gcc.gnu.org> | 1999-07-14 16:30:24 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-07-14 16:30:24 -0600 |
| commit | 87afbee625a00e6f657534f7959a28cec762320c (patch) | |
| tree | 88ffb81405bba08f3effade2c45b96d557a98c1c /gcc | |
| parent | bb183b9e6bd24141a9754677a782d341b52d00e3 (diff) | |
| download | gcc-87afbee625a00e6f657534f7959a28cec762320c.zip gcc-87afbee625a00e6f657534f7959a28cec762320c.tar.gz gcc-87afbee625a00e6f657534f7959a28cec762320c.tar.bz2 | |
reload.c (find_reloads): Emit a USE for a pseudo register without a hard register if...
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* reload.c (find_reloads): Emit a USE for a pseudo register without
a hard register if we could not create an optional reload for the
pseudo.
From-SVN: r28103
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/reload.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/reload.c b/gcc/reload.c index 011f899..d8b4136 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -3803,11 +3803,16 @@ find_reloads (insn, replace, ind_levels, live_known, reload_reg_p) (insn_code_number < 0 ? 0 : insn_operand_strict_low[insn_code_number][i]), 1, i, operand_type[i]); - /* If a memory reference remains, yet we can't make an optional + /* If a memory reference remains (either as a MEM or a pseudo that + did not get a hard register), yet we can't make an optional reload, check if this is actually a pseudo register reference; we then need to emit a USE and/or a CLOBBER so that reload inheritance will do the right thing. */ - else if (replace && GET_CODE (operand) == MEM) + else if (replace + && (GET_CODE (operand) == MEM + || (GET_CODE (operand) == REG + && REGNO (operand) >= FIRST_PSEUDO_REGISTER + && reg_renumber [REGNO (operand)] < 0))) { operand = *recog_operand_loc[i]; |