From 227450e9f3a506fdfcff67aa45135fe31f3f91f6 Mon Sep 17 00:00:00 2001 From: Martin Liska Date: Mon, 13 Dec 2021 15:34:30 +0100 Subject: [PATCH] i386: Fix emissing of __builtin_cpu_supports. PR target/103661 gcc/ChangeLog: * config/i386/i386-builtins.c (fold_builtin_cpu): Compare to 0 as API expects that non-zero values are returned (do that it mask == 31). For "avx512vbmi2" argument, we return now 1 << 31, which is a negative integer value. --- gcc/config/i386/i386-builtins.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/gcc/config/i386/i386-builtins.c b/gcc/config/i386/i386-builtins.c index 0fb14b55712..bca244fc011 100644 --- a/gcc/config/i386/i386-builtins.c +++ b/gcc/config/i386/i386-builtins.c @@ -2353,7 +2353,11 @@ fold_builtin_cpu (tree fndecl, tree *args) /* Return __cpu_model.__cpu_features[0] & field_val */ final = build2 (BIT_AND_EXPR, unsigned_type_node, array_elt, build_int_cstu (unsigned_type_node, field_val)); - return build1 (CONVERT_EXPR, integer_type_node, final); + if (isa_names_table[i].feature == 31) + return build2 (NE_EXPR, integer_type_node, final, + build_int_cst (unsigned_type_node, 0)); + else + return build1 (CONVERT_EXPR, integer_type_node, final); } gcc_unreachable (); } -- 2.34.1