Rename Cretonne to Cranelift!

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

@@ -0,0 +1,32 @@
+; Check that floating-point constants equal to zero are optimized correctly.
+test binemit
+target x86_64
+
+function %zero_const_32bit_no_rex() -> f32 fast {
+ebb0:
+  ; asm: xorps %xmm0, %xmm0
+  [-,%xmm0]    v0 = f32const 0.0     ; bin: 40 0f 57 c0
+  return v0
+}
+
+function %zero_const_32bit_rex() -> f32 fast {
+ebb0:
+  ; asm: xorps %xmm8, %xmm8
+  [-,%xmm8]    v1 = f32const 0.0     ; bin: 45 0f 57 c0
+  return v1
+}
+
+function %zero_const_64bit_no_rex() -> f64 fast {
+ebb0:
+  ; asm: xorpd %xmm0, %xmm0
+  [-,%xmm0]    v0 = f64const 0.0     ; bin: 66 40 0f 57 c0
+  return v0
+}
+
+function %zero_const_64bit_rex() -> f64 fast {
+ebb0:
+  ; asm: xorpd %xmm8, %xmm8
+  [-,%xmm8]    v1 = f64const 0.0     ; bin: 66 45 0f 57 c0
+  return v1
+}
+