Add standard expansions for fcopysign.

This is also just a sign bit manipulation.
2017-09-25 15:17:32 -07:00
parent 6bec5f8507
commit 79968a2325
3 changed files with 20 additions and 2 deletions
--- a/cranelift/filetests/wasm/f64-arith.cton
+++ b/cranelift/filetests/wasm/f64-arith.cton
@@ -84,4 +84,9 @@ ebb0(v0: f64, v1: f64):

 ; function %f64_min(f64, f64) -> f64
 ; function %f64_max(f64, f64) -> f64
-; function %f64_copysign(f64, f64) -> f64
+
+function %f64_copysign(f64, f64) -> f64 {
+ebb0(v0: f64, v1: f64):
+    v2 = fcopysign v0, v1
+    return v2
+}