Correctly zero extend operand of fcvt_from_uint for 8ints and 16bit ints (#997)

Fixes #996
2019-09-18 10:06:15 +02:00
parent 156938facf
commit add6a4f269
3 changed files with 26 additions and 19 deletions
--- a/cranelift/filetests/filetests/isa/x86/saturating-float-cast.clif
+++ b/cranelift/filetests/filetests/isa/x86/saturating-float-cast.clif
@@ -0,0 +1,13 @@
+test compile
+target x86_64
+
+function u0:0() -> f32 system_v {
+ebb0:
+    v0 = iconst.i8 255
+; check: v2 = iconst.i32 255
+; nextln: v0 = ireduce.i8 v2
+    v1 = fcvt_from_uint.f32 v0
+; nextln: v3 = uextend.i64 v0
+; nextln: v1 = fcvt_from_sint.f32 v3
+    return v1
+}