Remove broken sin/cos optimization for x86

Commit migrated from https://github.com/mono/mono/commit/76068d8d6130f837f004bd435b23175886319a02

diff --git a/src/mono/mono/mini/mini-x86.c b/src/mono/mono/mini/mini-x86.c
index 41f2ab3..76cba7a 100644 (file)
--- a/src/mono/mono/mini/mini-x86.c
+++ b/src/mono/mono/mini/mini-x86.c
@@ -3554,16 +3554,6 @@ mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
                case OP_FNEG:
                        x86_fchs (code);
                        break;          
-               case OP_SIN:
-                       x86_fsin (code);
-                       x86_fldz (code);
-                       x86_fp_op_reg (code, X86_FADD, 1, TRUE);
-                       break;          
-               case OP_COS:
-                       x86_fcos (code);
-                       x86_fldz (code);
-                       x86_fp_op_reg (code, X86_FADD, 1, TRUE);
-                       break;          
                case OP_ABS:
                        x86_fabs (code);
                        break;          
@@ -5589,11 +5579,7 @@ mono_arch_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMetho
        int opcode = 0;
 
        if (cmethod->klass == mono_class_try_get_math_class ()) {
-               if (strcmp (cmethod->name, "Sin") == 0) {
-                       opcode = OP_SIN;
-               } else if (strcmp (cmethod->name, "Cos") == 0) {
-                       opcode = OP_COS;
-               } else if (strcmp (cmethod->name, "Tan") == 0) {
+               if (strcmp (cmethod->name, "Tan") == 0) {
                        opcode = OP_TAN;
                } else if (strcmp (cmethod->name, "Atan") == 0) {
                        opcode = OP_ATAN;