diff options
Diffstat (limited to 'gcc/expr.h')
| -rw-r--r-- | gcc/expr.h | 29 |
1 files changed, 29 insertions, 0 deletions
@@ -256,6 +256,34 @@ enum direction {none, upward, downward}; /* Value has this type. */ /* Functions from optabs.c, commonly used, and without need for the optabs tables: */ +/* Passed to expand_simple_binop and expand_binop to say which options + to try to use if the requested operation can't be open-coded on the + requisite mode. Either OPTAB_LIB or OPTAB_LIB_WIDEN says try using + a library call. Either OPTAB_WIDEN or OPTAB_LIB_WIDEN says try + using a wider mode. OPTAB_MUST_WIDEN says try widening and don't + try anything else. */ + +enum optab_methods +{ + OPTAB_DIRECT, + OPTAB_LIB, + OPTAB_WIDEN, + OPTAB_LIB_WIDEN, + OPTAB_MUST_WIDEN +}; + +/* Generate code for a simple binary or unary operation. "Simple" in + this case means "can be unambiguously described by a (mode, code) + pair and mapped to a single optab." */ +extern rtx expand_simple_binop PARAMS ((enum machine_mode, enum rtx_code, rtx, + rtx, rtx, int, enum optab_methods)); +extern rtx expand_simple_unop PARAMS ((enum machine_mode, enum rtx_code, + rtx, rtx, int)); + +/* Report whether the machine description contains an insn which can + perform the operation described by CODE and MODE. */ +extern int have_insn_for PARAMS ((enum rtx_code, enum machine_mode)); + /* Emit code to make a call to a constant function or a library call. */ extern void emit_libcall_block PARAMS ((rtx, rtx, rtx, rtx)); @@ -266,6 +294,7 @@ extern void emit_libcall_block PARAMS ((rtx, rtx, rtx, rtx)); extern rtx gen_add2_insn PARAMS ((rtx, rtx)); extern rtx gen_add3_insn PARAMS ((rtx, rtx, rtx)); extern rtx gen_sub2_insn PARAMS ((rtx, rtx)); +extern rtx gen_sub3_insn PARAMS ((rtx, rtx, rtx)); extern rtx gen_move_insn PARAMS ((rtx, rtx)); extern int have_add2_insn PARAMS ((rtx, rtx)); extern int have_sub2_insn PARAMS ((rtx, rtx)); |