Merge pull request #784 from julian-seward1/issue779

Only create copy_nop instructions for types for which an encoding exi…
2019-06-05 15:05:56 +02:00
parent 23055196fc b1488decc4
commit 5fb347b7bc
5 changed files with 67 additions and 9 deletions
--- a/cranelift/filetests/filetests/regalloc/reload-779.clif
+++ b/cranelift/filetests/filetests/regalloc/reload-779.clif
@@ -0,0 +1,23 @@
+test compile
+target x86_64
+
+; Filed as https://github.com/CraneStation/cranelift/issues/779
+;
+; The copy_nop optimisation to reload (see Issue 773) was creating
+; copy_nop instructions for types for which there were no encoding.
+
+function u0:0(i64, i64, i64) system_v {
+    sig0 = () system_v
+    sig1 = (i16) system_v
+    fn1 = u0:94 sig0
+    fn2 = u0:95 sig1
+
+ebb0(v0: i64, v1: i64, v2: i64):
+    v3 = iconst.i16 0
+    jump ebb1(v3)
+
+ebb1(v4: i16):
+    call fn1()
+    call fn2(v4)
+    jump ebb1(v4)
+}