diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/combine.c | 12 |
2 files changed, 4 insertions, 12 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2ba0302..1ace8b0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2016-12-05 Segher Boessenkool <segher@kernel.crashing.org> + + * combine.c: Revert r243162. + 2016-12-05 Paolo Bonzini <bonzini@gnu.org> * match.pd: Simplify X ? C : 0 where C is a power of 2 and diff --git a/gcc/combine.c b/gcc/combine.c index 7ba634a..b429453 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -5602,18 +5602,6 @@ combine_simplify_rtx (rtx x, machine_mode op0_mode, int in_dest, && OBJECT_P (SUBREG_REG (XEXP (x, 0))))))) { rtx cond, true_rtx, false_rtx; - unsigned HOST_WIDE_INT nz; - - /* If the operation is an AND wrapped in a SIGN_EXTEND or ZERO_EXTEND with - either operand being just a constant single bit value, do nothing since - IF_THEN_ELSE is likely to increase the expression's complexity. */ - if (HWI_COMPUTABLE_MODE_P (mode) - && pow2p_hwi (nz = nonzero_bits (x, mode)) - && ! ((code == SIGN_EXTEND || code == ZERO_EXTEND) - && GET_CODE (XEXP (x, 0)) == AND - && CONST_INT_P (XEXP (XEXP (x, 0), 0)) - && UINTVAL (XEXP (XEXP (x, 0), 0)) == nz)) - return x; cond = if_then_else_cond (x, &true_rtx, &false_rtx); if (cond != 0 |