Implement FileCheck tests for several test commands (#2747)

* Add missing expected.txt for test

* Diagnostics -> StdWriters in render test

* Allow specifying several test prefixes to run

`slang-test -- tests/foo tests/bar`

* Squash warnings in some tests

* Enable gfx debug layer in gfx test util

Makes this issue present consistently: https://github.com/shader-slang/slang/issues/2766

* Allow DebugDevice to return interfaces instantiated by the debugged object

* Check that we actaully have a shader cache for shader cache tests

* Implement FileCheck tests for several test commands

- SIMPLE, SIMPLE_EX
- SIMPLE_LINE
- REFLECTION, CPU_REFLECTION
- CROSS_COMPILE

It does not currently support the render tests or the COMPARE_COMPUTE commands

It is invoked by adding `(filecheck=MY_FILECHECK_PREFIX)` to the test command, for example

TEST:CROSS_COMPILE(filecheck=SPIRV): -target spirv-assembly

* Move LLVM FileCheck interface to slang-llvm

* Neaten slang-test tests

* Refine handling of expected output in slang-test

* Add example FileCheck buffer test

* Add cuda-kernel-export tests

Which were waiting on FileCheck

* Bump vs project files

* Make createLLVMFileCheck_V1 return a void* rather than specifically an IFileCheck

* Remove use of CharSlice from filecheck interface

* Bump slang-llvm version

---------

Co-authored-by: jsmall-nvidia <jsmall@nvidia.com>

2 files changed, 3 insertions, 1 deletions

diff --git a/tests/diagnostics/local-line.slang b/tests/diagnostics/local-line.slang
index 973c234c0..532307a8f 100644
--- a/tests/diagnostics/local-line.slang
+++ b/tests/diagnostics/local-line.slang
@@ -3,6 +3,7 @@
 //TEST:SIMPLE_LINE:-entry computeMain -target dxbc  -stage compute
 //TEST:SIMPLE_LINE:-entry computeMain -target dll -stage compute
 //TEST:SIMPLE_LINE:-entry computeMain -target ptx -stage compute
+//TEST:SIMPLE_LINE(filecheck=CHECK):-entry computeMain -target spirv -stage compute
 
 //TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
 RWStructuredBuffer<int> outputBuffer;
@@ -37,6 +38,7 @@ void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
         else
         {
             a = e; b = c + c; d += d + __SyntaxError(); e = doThing(e, int(dispatchThreadID.x));
+            // CHECK: [[#@LINE-1]]
             
         }
     }
diff --git a/tests/diagnostics/local-line.slang.expected b/tests/diagnostics/local-line.slang.expected
index a2720097d..425151f3a 100644
--- a/tests/diagnostics/local-line.slang.expected
+++ b/tests/diagnostics/local-line.slang.expected
@@ -1 +1 @@
-39
+40