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| author | Mingjie Xing <mingjie.xing@gmail.com> | 2010-09-03 09:29:19 +0000 |
|---|---|---|
| committer | Mingjie Xing <xmj@gcc.gnu.org> | 2010-09-03 09:29:19 +0000 |
| commit | 4904231323789b7d5a0f6fa70fe7f55ee6fba109 (patch) | |
| tree | 9e1bc64b5068f033b640c01b28e05460daa9b49b /gcc/config/mips/mips.h | |
| parent | e5ca969363516ec05db3357c22079d7fdcd70ccf (diff) | |
| download | gcc-4904231323789b7d5a0f6fa70fe7f55ee6fba109.zip gcc-4904231323789b7d5a0f6fa70fe7f55ee6fba109.tar.gz gcc-4904231323789b7d5a0f6fa70fe7f55ee6fba109.tar.bz2 | |
Fix shift count truncate problem for loongson.
From-SVN: r163799
Diffstat (limited to 'gcc/config/mips/mips.h')
| -rw-r--r-- | gcc/config/mips/mips.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h index 4dd86d4..74bf3d25 100644 --- a/gcc/config/mips/mips.h +++ b/gcc/config/mips/mips.h @@ -2423,9 +2423,10 @@ typedef struct mips_args { (often extended) would be needed for byte accesses. */ #define SLOW_BYTE_ACCESS (!TARGET_MIPS16) -/* Define this to be nonzero if shift instructions ignore all but the low-order - few bits. */ -#define SHIFT_COUNT_TRUNCATED 1 +/* Standard MIPS integer shifts truncate the shift amount to the + width of the shifted operand. However, Loongson vector shifts + do not truncate the shift amount at all. */ +#define SHIFT_COUNT_TRUNCATED (!TARGET_LOONGSON_2EF) /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits is done just by pretending it is already truncated. */ |