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| author | uweigand <uweigand@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-10-28 12:47:21 +0000 |
|---|---|---|
| committer | uweigand <uweigand@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-10-28 12:47:21 +0000 |
| commit | d7041732999cc4ab850ff823358b34eba59af6bf (patch) | |
| tree | a9bda2464d7b200ebd679487ccda3fef16f416b1 /gcc/recog.c | |
| parent | 99005f0295bbd3d43057a21061be9e36015a7258 (diff) | |
| download | gcc-d7041732999cc4ab850ff823358b34eba59af6bf.tar.gz | |
PR target/15286
* final.c (alter_subreg): Compute correct offset to use with
paradoxical SUBREGs of memory operands.
* recog.c (general_operand): Allow paradoxical SUBREGs of
memory operands after reload.
* simplify-rtx.c (simplify_gen_subreg): Fail if simplify_subreg
has failed when passed a hard register.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@89752 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/recog.c')
| -rw-r--r-- | gcc/recog.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/recog.c b/gcc/recog.c index 61e1186d07a..eeb37afe9bb 100644 --- a/gcc/recog.c +++ b/gcc/recog.c @@ -936,8 +936,10 @@ general_operand (rtx op, enum machine_mode mode) #ifdef INSN_SCHEDULING /* On machines that have insn scheduling, we want all memory - reference to be explicit, so outlaw paradoxical SUBREGs. */ - if (MEM_P (sub) + reference to be explicit, so outlaw paradoxical SUBREGs. + However, we must allow them after reload so that they can + get cleaned up by cleanup_subreg_operands. */ + if (!reload_completed && MEM_P (sub) && GET_MODE_SIZE (mode) > GET_MODE_SIZE (GET_MODE (sub))) return 0; #endif |