x64: Fix udiv and sdiv for 8bit integers

2020-08-22 10:44:12 +02:00
parent 74642b166f
commit ce033f2a0c
4 changed files with 59 additions and 19 deletions
--- a/cranelift/codegen/src/isa/x64/inst/emit_tests.rs
+++ b/cranelift/codegen/src/isa/x64/inst/emit_tests.rs
@@ -1354,6 +1354,10 @@ fn test_x64_emit() {
        "mul     %rdi",
    ));

+    // ========================================================
+    // cbw
+    insns.push((Inst::sign_extend_al_to_ah(), "6698", "cbw"));
+
    // ========================================================
    // cdq family: SignExtendRaxRdx
    insns.push((Inst::sign_extend_rax_to_rdx(2), "6699", "cwd"));