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| author | dj <dj@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-06-29 21:15:01 +0000 |
|---|---|---|
| committer | dj <dj@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-06-29 21:15:01 +0000 |
| commit | ddf7cbcf3cb2d4df7cd809c65ed98359027b7a5a (patch) | |
| tree | 6b5797e3fd986b6af8e3abbbb0324e55a0e0565a | |
| parent | 7bae36c2d1c4b9dcf990421404047c2e9e2419e1 (diff) | |
| download | ppe42-gcc-ddf7cbcf3cb2d4df7cd809c65ed98359027b7a5a.tar.gz ppe42-gcc-ddf7cbcf3cb2d4df7cd809c65ed98359027b7a5a.zip | |
* simplify-rtx.c (simplify_subreg): When simplifying a CONCAT, at
least get rid of the CONCAT if we can't simplify further.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@43659 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 7 |
2 files changed, 11 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 407ae100a22..1feafbef801 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-06-29 DJ Delorie <dj@redhat.com> + + * simplify-rtx.c (simplify_subreg): When simplifying a CONCAT, at + least get rid of the CONCAT if we can't simplify further. + Fri Jun 29 12:27:24 2001 Jeffrey A Law (law@cygnus.com) * ssa-dce.c (ssa_eliminate_dead_code): Renamed from diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index a5ef0993600..20471cc5d5e 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -2430,9 +2430,14 @@ simplify_subreg (outermode, op, innermode, byte) int is_realpart = byte < GET_MODE_UNIT_SIZE (innermode); rtx part = is_realpart ? XEXP (op, 0) : XEXP (op, 1); unsigned int final_offset; + rtx res; final_offset = byte % (GET_MODE_UNIT_SIZE (innermode)); - return simplify_subreg (outermode, part, GET_MODE (part), final_offset); + res = simplify_subreg (outermode, part, GET_MODE (part), final_offset); + if (res) + return res; + /* We can at least simplify it by referring directly to the relevent part. */ + return gen_rtx_SUBREG (outermode, part, final_offset); } return NULL_RTX; |
