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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-05-20 07:52:46 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-05-20 07:52:46 -0400 |
| commit | d030f4b2d7c66c17ebf516b22d01cce27427670e (patch) | |
| tree | eefdc0b2d4f298967bbbda6270f4fc10774b8660 /gcc/reload.c | |
| parent | c102bba010c9dcd4b58d4a3ea1effe24c98d859e (diff) | |
| download | gcc-d030f4b2d7c66c17ebf516b22d01cce27427670e.zip gcc-d030f4b2d7c66c17ebf516b22d01cce27427670e.tar.gz gcc-d030f4b2d7c66c17ebf516b22d01cce27427670e.tar.bz2 | |
(push_reload): Don't reload inside a SUBREG when SUBREG_WORD is
nonzero.
From-SVN: r9757
Diffstat (limited to 'gcc/reload.c')
| -rw-r--r-- | gcc/reload.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/gcc/reload.c b/gcc/reload.c index c9a1ffa..f354048 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -798,9 +798,11 @@ push_reload (in, out, inloc, outloc, class, Finally, reload the inner expression if it is a register that is in the class whose registers cannot be referenced in a different size - and M1 is not the same size as M2. */ + and M1 is not the same size as M2. If SUBREG_WORD is nonzero, we + cannot reload just the inside since we might end up with the wrong + register class. */ - if (in != 0 && GET_CODE (in) == SUBREG + if (in != 0 && GET_CODE (in) == SUBREG && SUBREG_WORD (in) == 0 #ifdef CLASS_CANNOT_CHANGE_SIZE && class != CLASS_CANNOT_CHANGE_SIZE #endif @@ -898,7 +900,7 @@ push_reload (in, out, inloc, outloc, class, storing in a subreg is entitled to clobber it all (except in the case of STRICT_LOW_PART, and in that case the constraint should label it input-output.) */ - if (out != 0 && GET_CODE (out) == SUBREG + if (out != 0 && GET_CODE (out) == SUBREG && SUBREG_WORD (out) == 0 #ifdef CLASS_CANNOT_CHANGE_SIZE && class != CLASS_CANNOT_CHANGE_SIZE #endif |