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| author | Jim Wilson <wilson@gcc.gnu.org> | 1993-12-24 12:20:44 -0800 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1993-12-24 12:20:44 -0800 |
| commit | 2bf29316da96818c2db73220318bce5679431c98 (patch) | |
| tree | 1fdf290899fe18dd7f7ef90b3f82326fae382c3d | |
| parent | 443332237923d52fde2cea17df1d57594c1577c2 (diff) | |
| download | gcc-2bf29316da96818c2db73220318bce5679431c98.zip gcc-2bf29316da96818c2db73220318bce5679431c98.tar.gz gcc-2bf29316da96818c2db73220318bce5679431c98.tar.bz2 | |
(convert_modes): Can't truncate REG with gen_lowpart if
TRULY_NOOP_TRUNCATION doesn't allow it.
From-SVN: r6306
| -rw-r--r-- | gcc/expr.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -1223,7 +1223,9 @@ convert_modes (mode, oldmode, x, unsignedp) || (GET_MODE_SIZE (mode) <= GET_MODE_SIZE (oldmode) && ((GET_CODE (x) == MEM && ! MEM_VOLATILE_P (x) && direct_load[(int) mode]) - || GET_CODE (x) == REG))))) + || (GET_CODE (x) == REG + && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (mode), + GET_MODE_BITSIZE (GET_MODE (x))))))))) { /* ?? If we don't know OLDMODE, we have to assume here that X does not need sign- or zero-extension. This may not be |