Rename Cretonne to Cranelift!

cranelift/filetests/isa/x86/optimized-zero-constants-32bit.clif

@@ -0,0 +1,18 @@
+; Check that floating-point constants equal to zero are optimized correctly.
+test binemit
+target i686
+
+function %foo() -> f32 fast {
+ebb0:
+  ; asm: xorps %xmm0, %xmm0
+  [-,%xmm0]    v0 = f32const 0.0     ; bin: 0f 57 c0
+  return v0
+}
+
+function %bar() -> f64 fast {
+ebb0:
+  ; asm: xorpd %xmm0, %xmm0
+  [-,%xmm0]    v1 = f64const 0.0     ; bin: 66 0f 57 c0
+  return v1
+}
+