diff options
| -rw-r--r-- | gcc/config/xtensa/xtensa.cc | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/gcc/config/xtensa/xtensa.cc b/gcc/config/xtensa/xtensa.cc index a1f1849..6cf6b35 100644 --- a/gcc/config/xtensa/xtensa.cc +++ b/gcc/config/xtensa/xtensa.cc @@ -4519,13 +4519,15 @@ xtensa_insn_cost (rtx_insn *insn, bool speed) { if (!(recog_memoized (insn) < 0)) { - int len = get_attr_length (insn), n = (len + 2) / 3; + int len = get_attr_length (insn); if (len == 0) return COSTS_N_INSNS (0); if (speed) /* For speed cost. */ { + int n = (len + 2) / 3; + /* "L32R" may be particular slow (implementation-dependent). */ if (xtensa_is_insn_L32R_p (insn)) return COSTS_N_INSNS (1 + xtensa_extra_l32r_costs); @@ -4572,10 +4574,11 @@ xtensa_insn_cost (rtx_insn *insn, bool speed) { /* "L32R" itself plus constant in litpool. */ if (xtensa_is_insn_L32R_p (insn)) - return COSTS_N_INSNS (2) + 1; + len = 3 + 4; - /* Consider ".n" short instructions. */ - return COSTS_N_INSNS (n) - (n * 3 - len); + /* Consider fractional instruction length (for example, ".n" + short instructions or "L32R" litpool constants. */ + return (COSTS_N_INSNS (len) + 1) / 3; } } } |