asm2wasm import overloading fix (#924)

* asm2wasm should not promote an overloaded import result to f64 if it is a single type and void

1 files changed, 19 insertions, 0 deletions

diff --git a/test/use-import-and-drop.asm.js b/test/use-import-and-drop.asm.js
new file mode 100644
index 000000000..57688ced9
--- /dev/null
+++ b/test/use-import-and-drop.asm.js
@@ -0,0 +1,19 @@
+Module["asm"] = (function(global, env, buffer) {
+ "use asm";
+ var setTempRet0=env.setTempRet0;
+ var Math_imul = global.Math.imul;
+ function test1() {
+  var $b$1 = 0, $x_sroa_0_0_extract_trunc = 0, $2 = 0, $1$1 = 0, $1$0 = 0;
+  // Here we use setTempRet0 as if it returns i32, and later as if no return value.
+  // We should *not* expand the return type to f64, as this is not an overloaded return value
+  return (setTempRet0((((Math_imul($b$1, $x_sroa_0_0_extract_trunc) | 0) + $2 | 0) + $1$1 | $1$1 & 0) | 0), 0 | $1$0 & -1) | 0;
+ }
+ function test2() {
+  setTempRet0(10);
+ }
+ return {
+ };
+});
+
+
+