Add #1644 testcase

diff --git a/tests/arch/ice40/bug1644.il.gz b/tests/arch/ice40/bug1644.il.gz
new file mode 100644 (file)
index 0000000..363c510
Binary files /dev/null and b/tests/arch/ice40/bug1644.il.gz differ

diff --git a/tests/arch/ice40/bug1644.ys b/tests/arch/ice40/bug1644.ys
new file mode 100644 (file)
index 0000000..5950f0e
--- /dev/null
+++ b/tests/arch/ice40/bug1644.ys
@@ -0,0 +1,2 @@
+read_ilang bug1644.il.gz
+synth_ice40 -top top -dsp -json adc_dac_pass_through.json -run :map_bram