diff options
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index ab826769fad..42f714b3d82 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -782,13 +782,13 @@ expand_binop (enum machine_mode mode, optab binoptab, rtx op0, rtx op1, binoptab = add_optab; } - /* If we are inside an appropriately-short loop and one operand is an - expensive constant, force it into a register. */ - if (CONSTANT_P (op0) && preserve_subexpressions_p () + /* If we are inside an appropriately-short loop and we are optimizing, + force expensive constants into a register. */ + if (CONSTANT_P (op0) && optimize && rtx_cost (op0, binoptab->code) > COSTS_N_INSNS (1)) op0 = force_reg (mode, op0); - if (CONSTANT_P (op1) && preserve_subexpressions_p () + if (CONSTANT_P (op1) && optimize && ! shift_op && rtx_cost (op1, binoptab->code) > COSTS_N_INSNS (1)) op1 = force_reg (mode, op1); @@ -2348,13 +2348,13 @@ expand_twoval_binop (optab binoptab, rtx op0, rtx op1, rtx targ0, rtx targ1, op1 = force_not_mem (op1); } - /* If we are inside an appropriately-short loop and one operand is an - expensive constant, force it into a register. */ - if (CONSTANT_P (op0) && preserve_subexpressions_p () + /* If we are inside an appropriately-short loop and we are optimizing, + force expensive constants into a register. */ + if (CONSTANT_P (op0) && optimize && rtx_cost (op0, binoptab->code) > COSTS_N_INSNS (1)) op0 = force_reg (mode, op0); - if (CONSTANT_P (op1) && preserve_subexpressions_p () + if (CONSTANT_P (op1) && optimize && rtx_cost (op1, binoptab->code) > COSTS_N_INSNS (1)) op1 = force_reg (mode, op1); @@ -3750,13 +3750,13 @@ prepare_cmp_insn (rtx *px, rtx *py, enum rtx_code *pcomparison, rtx size, } } - /* If we are inside an appropriately-short loop and one operand is an - expensive constant, force it into a register. */ - if (CONSTANT_P (x) && preserve_subexpressions_p () + /* If we are inside an appropriately-short loop and we are optimizing, + force expensive constants into a register. */ + if (CONSTANT_P (x) && optimize && rtx_cost (x, COMPARE) > COSTS_N_INSNS (1)) x = force_reg (mode, x); - if (CONSTANT_P (y) && preserve_subexpressions_p () + if (CONSTANT_P (y) && optimize && rtx_cost (y, COMPARE) > COSTS_N_INSNS (1)) y = force_reg (mode, y); |