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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 3 |
2 files changed, 8 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ebf8468..b836d07 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-02-27 James E Wilson <wilson@tuliptree.org> + + * combine.c (simplify_comparison): Require integral mode when + permuting SUBREG with AND. + 2003-02-27 Steve Ellcey <sje@cup.hp.com> * config/ia64/hpux.h (STARTFILE_PREFIX_SPEC): Remove. diff --git a/gcc/combine.c b/gcc/combine.c index fe5cce5..50b1876 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -11130,6 +11130,9 @@ simplify_comparison (code, pop0, pop1) represents the low part, permute the SUBREG and the AND and try again. */ if (GET_CODE (XEXP (op0, 0)) == SUBREG + /* Require an integral mode, to avoid creating something like + (AND:SF ...). */ + && SCALAR_INT_MODE_P (GET_MODE (SUBREG_REG (XEXP (op0, 0)))) /* It is unsafe to commute the AND into the SUBREG if the SUBREG is paradoxical and WORD_REGISTER_OPERATIONS is not defined. As originally written the upper bits have a defined value |