diff options
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 7afe61d..b47f218 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -4626,13 +4626,15 @@ expand_builtin_alloca (tree exp, bool cannot_accumulate) return result; } -/* Expand a call to a bswap builtin with argument ARG0. MODE - is the mode to expand with. */ +/* Expand a call to bswap builtin in EXP. + Return NULL_RTX if a normal call should be emitted rather than expanding the + function in-line. If convenient, the result should be placed in TARGET. + SUBTARGET may be used as the target for computing one of EXP's operands. */ static rtx -expand_builtin_bswap (tree exp, rtx target, rtx subtarget) +expand_builtin_bswap (enum machine_mode target_mode, tree exp, rtx target, + rtx subtarget) { - enum machine_mode mode; tree arg; rtx op0; @@ -4640,14 +4642,18 @@ expand_builtin_bswap (tree exp, rtx target, rtx subtarget) return NULL_RTX; arg = CALL_EXPR_ARG (exp, 0); - mode = TYPE_MODE (TREE_TYPE (arg)); - op0 = expand_expr (arg, subtarget, VOIDmode, EXPAND_NORMAL); + op0 = expand_expr (arg, + subtarget && GET_MODE (subtarget) == target_mode + ? subtarget : NULL_RTX, + target_mode, EXPAND_NORMAL); + if (GET_MODE (op0) != target_mode) + op0 = convert_to_mode (target_mode, op0, 1); - target = expand_unop (mode, bswap_optab, op0, target, 1); + target = expand_unop (target_mode, bswap_optab, op0, target, 1); gcc_assert (target); - return convert_to_mode (mode, target, 0); + return convert_to_mode (target_mode, target, 1); } /* Expand a call to a unary builtin in EXP. @@ -6077,10 +6083,10 @@ expand_builtin (tree exp, rtx target, rtx subtarget, enum machine_mode mode, expand_stack_restore (CALL_EXPR_ARG (exp, 0)); return const0_rtx; + case BUILT_IN_BSWAP16: case BUILT_IN_BSWAP32: case BUILT_IN_BSWAP64: - target = expand_builtin_bswap (exp, target, subtarget); - + target = expand_builtin_bswap (target_mode, exp, target, subtarget); if (target) return target; break; @@ -8169,7 +8175,7 @@ fold_builtin_bitop (tree fndecl, tree arg) return NULL_TREE; } -/* Fold function call to builtin_bswap and the long and long long +/* Fold function call to builtin_bswap and the short, long and long long variants. Return NULL_TREE if no simplification can be made. */ static tree fold_builtin_bswap (tree fndecl, tree arg) @@ -8182,15 +8188,15 @@ fold_builtin_bswap (tree fndecl, tree arg) { HOST_WIDE_INT hi, width, r_hi = 0; unsigned HOST_WIDE_INT lo, r_lo = 0; - tree type; + tree type = TREE_TYPE (TREE_TYPE (fndecl)); - type = TREE_TYPE (arg); width = TYPE_PRECISION (type); lo = TREE_INT_CST_LOW (arg); hi = TREE_INT_CST_HIGH (arg); switch (DECL_FUNCTION_CODE (fndecl)) { + case BUILT_IN_BSWAP16: case BUILT_IN_BSWAP32: case BUILT_IN_BSWAP64: { @@ -8220,9 +8226,9 @@ fold_builtin_bswap (tree fndecl, tree arg) } if (width < HOST_BITS_PER_WIDE_INT) - return build_int_cst (TREE_TYPE (TREE_TYPE (fndecl)), r_lo); + return build_int_cst (type, r_lo); else - return build_int_cst_wide (TREE_TYPE (TREE_TYPE (fndecl)), r_lo, r_hi); + return build_int_cst_wide (type, r_lo, r_hi); } return NULL_TREE; @@ -10575,6 +10581,7 @@ fold_builtin_1 (location_t loc, tree fndecl, tree arg0, bool ignore) CASE_FLT_FN (BUILT_IN_LLRINT): return fold_fixed_mathfn (loc, fndecl, arg0); + case BUILT_IN_BSWAP16: case BUILT_IN_BSWAP32: case BUILT_IN_BSWAP64: return fold_builtin_bswap (fndecl, arg0); @@ -14339,6 +14346,7 @@ is_inexpensive_builtin (tree decl) case BUILT_IN_ABS: case BUILT_IN_ALLOCA: case BUILT_IN_ALLOCA_WITH_ALIGN: + case BUILT_IN_BSWAP16: case BUILT_IN_BSWAP32: case BUILT_IN_BSWAP64: case BUILT_IN_CLZ: |