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-rw-r--r--gcc/combine.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/combine.c b/gcc/combine.c
index 787b0db..4dbf022 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -5939,7 +5939,9 @@ combine_simplify_rtx (rtx x, enum machine_mode op0_mode, int in_dest,
else if (SHIFT_COUNT_TRUNCATED && !REG_P (XEXP (x, 1)))
SUBST (XEXP (x, 1),
force_to_mode (XEXP (x, 1), GET_MODE (XEXP (x, 1)),
- targetm.shift_truncation_mask (GET_MODE (x)),
+ ((unsigned HOST_WIDE_INT) 1
+ << exact_log2 (GET_MODE_BITSIZE (GET_MODE (x))))
+ - 1,
0));
break;
@@ -9875,7 +9877,7 @@ simplify_shift_const_1 (enum rtx_code code, enum machine_mode result_mode,
want to do this inside the loop as it makes it more difficult to
combine shifts. */
if (SHIFT_COUNT_TRUNCATED)
- orig_count &= targetm.shift_truncation_mask (mode);
+ orig_count &= GET_MODE_BITSIZE (mode) - 1;
/* If we were given an invalid count, don't do anything except exactly
what was requested. */