diff options
| -rw-r--r-- | i386-gen.c | 5 | ||||
| -rw-r--r-- | x86_64-gen.c | 12 |
2 files changed, 13 insertions, 4 deletions
@@ -895,7 +895,10 @@ ST_FUNC void gen_opf(int op) swapped = 0; if (swapped) o(0xc9d9); /* fxch %st(1) */ - o(0xe9da); /* fucompp */ + if (op == TOK_EQ || op == TOK_NE) + o(0xe9da); /* fucompp */ + else + o(0xd9de); /* fcompp */ o(0xe0df); /* fnstsw %ax */ if (op == TOK_EQ) { o(0x45e480); /* and $0x45, %ah */ diff --git a/x86_64-gen.c b/x86_64-gen.c index 2f4d8fe..1550c07 100644 --- a/x86_64-gen.c +++ b/x86_64-gen.c @@ -1793,7 +1793,10 @@ void gen_opf(int op) swapped = 0; if (swapped) o(0xc9d9); /* fxch %st(1) */ - o(0xe9da); /* fucompp */ + if (op == TOK_EQ || op == TOK_NE) + o(0xe9da); /* fucompp */ + else + o(0xd9de); /* fcompp */ o(0xe0df); /* fnstsw %ax */ if (op == TOK_EQ) { o(0x45e480); /* and $0x45, %ah */ @@ -1877,8 +1880,11 @@ void gen_opf(int op) if ((vtop->type.t & VT_BTYPE) == VT_DOUBLE) o(0x66); - o(0x2e0f); /* ucomisd */ - + if (op == TOK_EQ || op == TOK_NE) + o(0x2e0f); /* ucomisd */ + else + o(0x2f0f); /* comisd */ + if (vtop->r & VT_LVAL) { gen_modrm(vtop[-1].r, r, vtop->sym, fc); } else { |