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| author | J"orn Rennecke <amylaar@redhat.com> | 2000-11-06 20:09:04 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2000-11-06 20:09:04 +0000 |
| commit | f34c06e547edb048d9c5be8a2c019027da03da5f (patch) | |
| tree | c7978d0b02dbf357a24f4f4533ab561007f35730 /gcc | |
| parent | f559f30b4b87acccbfa73cfbb9c2c1ff610caed2 (diff) | |
| download | gcc-f34c06e547edb048d9c5be8a2c019027da03da5f.zip gcc-f34c06e547edb048d9c5be8a2c019027da03da5f.tar.gz gcc-f34c06e547edb048d9c5be8a2c019027da03da5f.tar.bz2 | |
reload1.c (eliminate_regs_in_insn): Allow a set to be a PARALLEL with (clobber (match_scratch...)).
* reload1.c (eliminate_regs_in_insn): Allow a set to be a PARALLEL
with (clobber (match_scratch...)).
From-SVN: r37281
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/reload1.c | 19 |
2 files changed, 20 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f24e183..0bf7049 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Mon Nov 6 20:08:13 2000 J"orn Rennecke <amylaar@redhat.com> + + * reload1.c (eliminate_regs_in_insn): Allow a set to be a PARALLEL + with (clobber (match_scratch...)). + 2000-11-06 Neil Booth <neilb@earthling.net> * c-lex.c (init_c_lex): If cpp_start_read fails, exit with diff --git a/gcc/reload1.c b/gcc/reload1.c index 66c98f5..9e985e4 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -2953,13 +2953,24 @@ eliminate_regs_in_insn (insn, replace) if (offset == 0) { - /* We assume here that we don't need a PARALLEL of - any CLOBBERs for this assignment. There's not - much we can do if we do need it. */ + int num_clobbers; + /* We assume here that if we need a PARALLEL with + CLOBBERs for this assignment, we can do with the + MATCH_SCRATCHes that add_clobbers allocates. + There's not much we can do if that doesn't work. */ PATTERN (insn) = gen_rtx_SET (VOIDmode, SET_DEST (old_set), ep->to_rtx); - INSN_CODE (insn) = recog (PATTERN (insn), insn, 0); + num_clobbers = 0; + INSN_CODE (insn) = recog (PATTERN (insn), insn, &num_clobbers); + if (num_clobbers) + { + rtvec vec = rtvec_alloc (num_clobbers + 1); + + vec->elem[0] = PATTERN (insn); + PATTERN (insn) = gen_rtx_PARALLEL (VOIDmode, vec); + add_clobbers (PATTERN (insn), INSN_CODE (insn)); + } if (INSN_CODE (insn) < 0) abort (); } |