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-rw-r--r--tests/bugs/gh-519.slang42
-rw-r--r--tests/bugs/gh-519.slang.expected.txt4
2 files changed, 46 insertions, 0 deletions
diff --git a/tests/bugs/gh-519.slang b/tests/bugs/gh-519.slang
new file mode 100644
index 000000000..35bf6dcd7
--- /dev/null
+++ b/tests/bugs/gh-519.slang
@@ -0,0 +1,42 @@
+//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute
+//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute
+
+// This bug involved incorrect computation of the successor
+// blocks for a `switch`, which led to incorrect SSA form.
+
+int test(int val)
+{
+ int tmp = 0;
+ switch(val)
+ {
+ case 0:
+ tmp = 1;
+ break;
+
+ case 1:
+ tmp = 2;
+ break;
+
+ case 2:
+ tmp = 3;
+ break;
+
+ default:
+ tmp = val + 1;
+ break;
+ }
+ return tmp;
+}
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):dxbinding(0),glbinding(0),out
+RWStructuredBuffer<int> gBuffer;
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+ uint tid = dispatchThreadID.x;
+ int val = int(tid);
+ val = test(val);
+ gBuffer[tid] = val;
+} \ No newline at end of file
diff --git a/tests/bugs/gh-519.slang.expected.txt b/tests/bugs/gh-519.slang.expected.txt
new file mode 100644
index 000000000..94ebaf900
--- /dev/null
+++ b/tests/bugs/gh-519.slang.expected.txt
@@ -0,0 +1,4 @@
+1
+2
+3
+4