diff options
| author | Richard Henderson <rth@cygnus.com> | 1997-12-15 10:39:02 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 1997-12-15 10:39:02 -0800 |
| commit | 166cdf4ab4c19a9017c07e95a7af8b77aae3a7f0 (patch) | |
| tree | cc4e1bde2c0421d91ca1972c84019afb3b941709 /gcc/expmed.c | |
| parent | bcbbac264c104c997e3361588fefb5480933d31e (diff) | |
| download | gcc-166cdf4ab4c19a9017c07e95a7af8b77aae3a7f0.zip gcc-166cdf4ab4c19a9017c07e95a7af8b77aae3a7f0.tar.gz gcc-166cdf4ab4c19a9017c07e95a7af8b77aae3a7f0.tar.bz2 | |
* expmed.c (expand_shift): If SHIFT_COUNT_TRUNCATED, drop a SUBREG.
From-SVN: r17107
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 8170c26..fba7182 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -1752,11 +1752,16 @@ expand_shift (code, mode, shifted, amount, target, unsignedp) op1 = expand_expr (amount, NULL_RTX, VOIDmode, 0); #ifdef SHIFT_COUNT_TRUNCATED - if (SHIFT_COUNT_TRUNCATED - && GET_CODE (op1) == CONST_INT - && (unsigned HOST_WIDE_INT) INTVAL (op1) >= GET_MODE_BITSIZE (mode)) - op1 = GEN_INT ((unsigned HOST_WIDE_INT) INTVAL (op1) - % GET_MODE_BITSIZE (mode)); + if (SHIFT_COUNT_TRUNCATED) + { + if (GET_CODE (op1) == CONST_INT + && (unsigned HOST_WIDE_INT) INTVAL (op1) >= GET_MODE_BITSIZE (mode)) + op1 = GEN_INT ((unsigned HOST_WIDE_INT) INTVAL (op1) + % GET_MODE_BITSIZE (mode)); + else if (GET_CODE (op1) == SUBREG + && SUBREG_WORD (op1) == 0) + op1 = SUBREG_REG (op1); + } #endif if (op1 == const0_rtx) |