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| author | Jim Wilson <wilson@cygnus.com> | 1999-12-06 23:22:47 +0000 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1999-12-06 15:22:47 -0800 |
| commit | 402b6c2a7aec8bac15a092efcc9612ae4bc3468a (patch) | |
| tree | 1344c2997ec0fc0d0ef7a31b1aab9e5902aa2c99 /gcc/combine.c | |
| parent | de1f429d34431c2609b8d88588b63ade95abf0e7 (diff) | |
| download | gcc-402b6c2a7aec8bac15a092efcc9612ae4bc3468a.zip gcc-402b6c2a7aec8bac15a092efcc9612ae4bc3468a.tar.gz gcc-402b6c2a7aec8bac15a092efcc9612ae4bc3468a.tar.bz2 | |
Fix ia64 execute/930630-1.c miscompilation.
* combine.c (force_to_mode, case LSHIFTRT): New local inner_mask. Set
inner_mask instead of mask.
From-SVN: r30812
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 825d8a7..c3864e0 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -6815,18 +6815,19 @@ force_to_mode (x, mode, mask, reg, just_select) && GET_MODE_BITSIZE (op_mode) <= HOST_BITS_PER_WIDE_INT) { rtx inner = XEXP (x, 0); + unsigned HOST_WIDE_INT inner_mask; /* Select the mask of the bits we need for the shift operand. */ - mask <<= INTVAL (XEXP (x, 1)); + inner_mask = mask << INTVAL (XEXP (x, 1)); /* We can only change the mode of the shift if we can do arithmetic - in the mode of the shift and MASK is no wider than the width of - OP_MODE. */ + in the mode of the shift and INNER_MASK is no wider than the + width of OP_MODE. */ if (GET_MODE_BITSIZE (op_mode) > HOST_BITS_PER_WIDE_INT - || (mask & ~ GET_MODE_MASK (op_mode)) != 0) + || (inner_mask & ~ GET_MODE_MASK (op_mode)) != 0) op_mode = GET_MODE (x); - inner = force_to_mode (inner, op_mode, mask, reg, next_select); + inner = force_to_mode (inner, op_mode, inner_mask, reg, next_select); if (GET_MODE (x) != op_mode || inner != XEXP (x, 0)) x = gen_binary (LSHIFTRT, op_mode, inner, XEXP (x, 1)); |