From d120fec7e81bbd5e8cf2c551b573feaf6678b43d Mon Sep 17 00:00:00 2001
From: jsmall-nvidia <jsmall@nvidia.com>
Date: Mon, 27 Mar 2023 22:52:48 -0400
Subject: Upgrade `slang-llvm` (#2741)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Fix SlangCompileTarget to keep ordering.

* Add test.
Remove V2 version of interface to access IDownstreamCompiler
Update to slang-llvm which has _chkstk support.

* Update slang.h

Co-authored-by: Ellie Hermaszewska <github@sub.monoid.al>

---------

Co-authored-by: Yong He <yonghe@outlook.com>
Co-authored-by: Ellie Hermaszewska <github@sub.monoid.al>
---
 tests/bugs/stk-chk.slang              | 55 +++++++++++++++++++++++++++++++++++
 tests/bugs/stk-chk.slang.expected.txt |  4 +++
 2 files changed, 59 insertions(+)
 create mode 100644 tests/bugs/stk-chk.slang
 create mode 100644 tests/bugs/stk-chk.slang.expected.txt

(limited to 'tests/bugs')

diff --git a/tests/bugs/stk-chk.slang b/tests/bugs/stk-chk.slang
new file mode 100644
index 000000000..8fabaeee5
--- /dev/null
+++ b/tests/bugs/stk-chk.slang
@@ -0,0 +1,55 @@
+//TEST(compute):COMPARE_COMPUTE:-cpu 
+
+// Tests slang-llvm can deal with large items on stack. 
+// On some targets this requires special handling (_chkstk on windows for example) 
+
+struct LargeStruct
+{
+    int values[4096];
+};
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+//TEST_INPUT:ubuffer(data=[9 1000 27 34], stride=4):name inputBuffer
+StructuredBuffer<int> inputBuffer;
+
+LargeStruct _calcStruct(int a)
+{
+    LargeStruct s;
+    
+    int t = a;
+    
+    for (int i = 0; i < 4096; ++i)
+    {
+        s.values[i] = t;
+        
+        // Munge
+        t = t ^ (i * t) + (i - a) * 17 + inputBuffer[t & 3];
+    }
+    
+    return s;
+}
+
+int _calcValue(LargeStruct s)
+{
+    int v = 0;
+    for (int i = 0; i < 4096; ++i)
+    {
+        v ^= s.values[i];
+    }
+    return v + 1;
+}
+
+int _calc1(int a)
+{    
+    return _calcValue(_calcStruct(_calcValue(_calcStruct(_calcValue(_calcStruct(a ^ 19))))));
+}
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    int index = int(dispatchThreadID.x);
+    
+    outputBuffer[index] = _calc1(index) + 1;
+}
\ No newline at end of file
diff --git a/tests/bugs/stk-chk.slang.expected.txt b/tests/bugs/stk-chk.slang.expected.txt
new file mode 100644
index 000000000..530a099a9
--- /dev/null
+++ b/tests/bugs/stk-chk.slang.expected.txt
@@ -0,0 +1,4 @@
+5B2F1F3C
+FB3647FB
+AC4B2652
+A954D2BD
-- 
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