Support for 64 bit integer types (#1191)

* * For integer literals add postfix, and use unsigned/signed output appropriately
* Extend GLSL extension handling by type, and for adding 64 bit int extensions
* Added tests for int/uint64 types

* Add explicit Int/UInt64 emit functions to avoid ambiguity.

4 files changed, 53 insertions, 0 deletions

diff --git a/tests/hlsl-intrinsic/scalar-int64.slang b/tests/hlsl-intrinsic/scalar-int64.slang
new file mode 100644
index 000000000..4da2a553e
--- /dev/null
+++ b/tests/hlsl-intrinsic/scalar-int64.slang
@@ -0,0 +1,21 @@
+//TEST(compute):COMPARE_COMPUTE_EX:-cpu -compute 
+// No support for int64_t on dx11
+//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute
+// No support for int64_t on HLSL
+//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12 
+//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12 -use-dxil
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-cuda -compute
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    uint idx = dispatchThreadID.x;
+    
+    int64_t v = int64_t(idx) * 0x400010035435435ll; 
+    
+    outputBuffer[idx] = int(v) ^ int(((v >> 32) & 0xffffffff)); 
+}
\ No newline at end of file
diff --git a/tests/hlsl-intrinsic/scalar-int64.slang.expected.txt b/tests/hlsl-intrinsic/scalar-int64.slang.expected.txt
new file mode 100644
index 000000000..c0bb016cd
--- /dev/null
+++ b/tests/hlsl-intrinsic/scalar-int64.slang.expected.txt
@@ -0,0 +1,4 @@
+0
+31435535
+6286AA6A
+93C9FF9F
diff --git a/tests/hlsl-intrinsic/scalar-uint64.slang b/tests/hlsl-intrinsic/scalar-uint64.slang
new file mode 100644
index 000000000..a990ccc22
--- /dev/null
+++ b/tests/hlsl-intrinsic/scalar-uint64.slang
@@ -0,0 +1,24 @@
+//TEST(compute):COMPARE_COMPUTE_EX:-cpu -compute 
+// No support for uint64_t on DX11
+//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute
+// No support for uint64_t on fxc - we need SM6.0 and dxil
+// https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/hlsl-shader-model-6-0-features-for-direct3d-12
+//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12
+//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12 -profile cs_6_3 -use-dxil 
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute
+//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-cuda -compute
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    uint idx = dispatchThreadID.x;
+    
+    uint64_t v = uint64_t(idx) * 0x8000100354354354ull; 
+    // Let's check all the bits make it
+    v |= 0x8000000000000000ull;
+    
+    outputBuffer[idx] = int(v) ^ int(v >> 32); 
+}
\ No newline at end of file
diff --git a/tests/hlsl-intrinsic/scalar-uint64.slang.expected.txt b/tests/hlsl-intrinsic/scalar-uint64.slang.expected.txt
new file mode 100644
index 000000000..b8be0469a
--- /dev/null
+++ b/tests/hlsl-intrinsic/scalar-uint64.slang.expected.txt
@@ -0,0 +1,4 @@
+80000000
+D4355357
+286AA6AE
+7C9FF9F5