Add new unit test for inline asm syntax passing through input variables to output variables.

1 files changed, 8 insertions, 1 deletions

diff --git a/tests/test_core.py b/tests/test_core.py
index 54fbdcd1..054721f9 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -3756,11 +3756,18 @@ def process(filename):
         int main() {
           asm("Module.print('Inline JS is very cool')");
           printf("%.2f\n", get());
+
+          // Test that passing multiple input and output variables works.
+          int src1 = 1, src2 = 2, src3 = 3;
+          int dst1 = 0, dst2 = 0, dst3 = 0;
+          asm("Module.print(%3); Module.print(%4); Module.print(%5); %0 = %3; %1 = %4; %2 = %5;" : "=r"(dst1),"=r"(dst2),"=r"(dst3): "r"(src1),"r"(src2),"r"(src3));
+          printf("%d\n%d\n%d\n", dst1, dst2, dst3);
+
           return 0;
         }
         '''
 
-      self.do_run(src, 'Inline JS is very cool\n3.64\n')
+      self.do_run(src, 'Inline JS is very cool\n3.64\n1\n2\n3\n1\n2\n3\n')
 
   def test_inlinejs2(self):
       if Settings.ASM_JS: Settings.ASM_JS = 2 # skip validation, asm does not support random code