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| author | Jeff Law <law@gcc.gnu.org> | 1998-04-14 02:04:21 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1998-04-14 02:04:21 -0600 |
| commit | 80608e279347300c822a048eb4b37b607f930b76 (patch) | |
| tree | 1736d4d6a2a38dc658dba69d19cc0c2ebd9e2166 /gcc/combine.c | |
| parent | d5daf0986fe2946d7dd9704cfe3e2407e98f2637 (diff) | |
| download | gcc-80608e279347300c822a048eb4b37b607f930b76.zip gcc-80608e279347300c822a048eb4b37b607f930b76.tar.gz gcc-80608e279347300c822a048eb4b37b607f930b76.tar.bz2 | |
combine.c (simplify_rtx, [...]): Respect value of TRULY_NOOP_TRUNCATION.
8
* combine.c (simplify_rtx, case TRUNCATE): Respect value of
TRULY_NOOP_TRUNCATION.
From-SVN: r19204
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index c831be1..66de17e 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -3736,7 +3736,9 @@ simplify_rtx (x, op0_mode, last, in_dest) if (GET_MODE_CLASS (mode) == MODE_PARTIAL_INT) break; - if (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT) + if (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT + && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (mode), + GET_MODE_BITSIZE (GET_MODE (XEXP (x, 0))))) SUBST (XEXP (x, 0), force_to_mode (XEXP (x, 0), GET_MODE (XEXP (x, 0)), GET_MODE_MASK (mode), NULL_RTX, 0)); |