diff options
| -rw-r--r-- | gcc/ChangeLog | 10 | ||||
| -rw-r--r-- | gcc/optabs-tree.c | 39 | ||||
| -rw-r--r-- | gcc/optabs.c | 19 | ||||
| -rw-r--r-- | gcc/optabs.h | 6 |
4 files changed, 68 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 922ca5d..c9ca3ba 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,6 +1,16 @@ 2019-10-07 Ilya Leoshkevich <iii@linux.ibm.com> PR target/77918 + * optabs-tree.c (vcond_icode_p): New function. + (vcond_eq_icode_p): Likewise. + (expand_vec_cond_expr_p): Use vcond_icode_p and + vcond_eq_icode_p. + * optabs.c (can_vcond_compare_p): New function. + * optabs.h (can_vcond_compare_p): Likewise. + +2019-10-07 Ilya Leoshkevich <iii@linux.ibm.com> + + PR target/77918 * gimple-expr.c (gimple_cond_get_ops_from_tree): Assert that the caller passes a non-trapping condition. (is_gimple_condexpr): Allow trapping conditions. diff --git a/gcc/optabs-tree.c b/gcc/optabs-tree.c index 8157798..a5ecbf0 100644 --- a/gcc/optabs-tree.c +++ b/gcc/optabs-tree.c @@ -23,7 +23,10 @@ along with GCC; see the file COPYING3. If not see #include "coretypes.h" #include "target.h" #include "insn-codes.h" +#include "rtl.h" #include "tree.h" +#include "memmodel.h" +#include "optabs.h" #include "optabs-tree.h" #include "stor-layout.h" @@ -329,6 +332,31 @@ expand_vec_cmp_expr_p (tree value_type, tree mask_type, enum tree_code code) return false; } +/* Return true iff vcond_optab/vcondu_optab can handle a vector + comparison for code CODE, comparing operands of type CMP_OP_TYPE and + producing a result of type VALUE_TYPE. */ + +static bool +vcond_icode_p (tree value_type, tree cmp_op_type, enum tree_code code) +{ + return can_vcond_compare_p (get_rtx_code (code, TYPE_UNSIGNED (cmp_op_type)), + TYPE_MODE (value_type), TYPE_MODE (cmp_op_type)); +} + +/* Return true iff vcondeq_optab can handle a vector comparison for code CODE, + comparing operands of type CMP_OP_TYPE and producing a result of type + VALUE_TYPE. */ + +static bool +vcond_eq_icode_p (tree value_type, tree cmp_op_type, enum tree_code code) +{ + if (code != EQ_EXPR && code != NE_EXPR) + return false; + + return get_vcond_eq_icode (TYPE_MODE (value_type), TYPE_MODE (cmp_op_type)) + != CODE_FOR_nothing; +} + /* Return TRUE iff, appropriate vector insns are available for vector cond expr with vector type VALUE_TYPE and a comparison with operand vector types in CMP_OP_TYPE. */ @@ -347,14 +375,13 @@ expand_vec_cond_expr_p (tree value_type, tree cmp_op_type, enum tree_code code) || maybe_ne (GET_MODE_NUNITS (value_mode), GET_MODE_NUNITS (cmp_op_mode))) return false; - if (get_vcond_icode (TYPE_MODE (value_type), TYPE_MODE (cmp_op_type), - TYPE_UNSIGNED (cmp_op_type)) == CODE_FOR_nothing - && ((code != EQ_EXPR && code != NE_EXPR) - || get_vcond_eq_icode (TYPE_MODE (value_type), - TYPE_MODE (cmp_op_type)) == CODE_FOR_nothing)) + if (TREE_CODE_CLASS (code) != tcc_comparison) + /* This may happen, for example, if code == SSA_NAME, in which case we + cannot be certain whether a vector insn is available. */ return false; - return true; + return vcond_icode_p (value_type, cmp_op_type, code) + || vcond_eq_icode_p (value_type, cmp_op_type, code); } /* Use the current target and options to initialize diff --git a/gcc/optabs.c b/gcc/optabs.c index 35921e6..d6701df 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -3819,6 +3819,25 @@ can_compare_p (enum rtx_code code, machine_mode mode, return 0; } +/* Return whether the backend can emit a vector comparison for code CODE, + comparing operands of mode CMP_OP_MODE and producing a result with + VALUE_MODE. */ + +bool +can_vcond_compare_p (enum rtx_code code, machine_mode value_mode, + machine_mode cmp_op_mode) +{ + enum insn_code icode; + bool unsigned_p = (code == LTU || code == LEU || code == GTU || code == GEU); + rtx reg1 = alloca_raw_REG (cmp_op_mode, LAST_VIRTUAL_REGISTER + 1); + rtx reg2 = alloca_raw_REG (cmp_op_mode, LAST_VIRTUAL_REGISTER + 2); + rtx test = alloca_rtx_fmt_ee (code, value_mode, reg1, reg2); + + return (icode = get_vcond_icode (value_mode, cmp_op_mode, unsigned_p)) + != CODE_FOR_nothing + && insn_operand_matches (icode, 3, test); +} + /* This function is called when we are going to emit a compare instruction that compares the values found in X and Y, using the rtl operator COMPARISON. diff --git a/gcc/optabs.h b/gcc/optabs.h index 897bb5d..b1348ce 100644 --- a/gcc/optabs.h +++ b/gcc/optabs.h @@ -242,6 +242,12 @@ enum can_compare_purpose (without splitting it into pieces). */ extern int can_compare_p (enum rtx_code, machine_mode, enum can_compare_purpose); + +/* Return whether the backend can emit a vector comparison for code CODE, + comparing operands of mode CMP_OP_MODE and producing a result with + VALUE_MODE. */ +extern bool can_vcond_compare_p (enum rtx_code, machine_mode, machine_mode); + extern rtx prepare_operand (enum insn_code, rtx, int, machine_mode, machine_mode, int); /* Emit a pair of rtl insns to compare two rtx's and to jump |