[clang] [llvm] [HLSL][SPIRV][DXIL] Implement `dot4add_u8packed` intrinsic (PR #115068)

[Greg Roth via cfe-commits]

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@@ -0,0 +1,18 @@
+
+// RUN: %clang_cc1 -finclude-default-header -triple \
+// RUN:   dxil-pc-shadermodel6.3-compute %s -emit-llvm -disable-llvm-passes -o - | \
+// RUN:   FileCheck %s -DTARGET=dx
+// RUN: %clang_cc1 -finclude-default-header -triple \
+// RUN:   spirv-pc-vulkan-compute %s -emit-llvm -disable-llvm-passes -o - | \
+// RUN:   FileCheck %s -DTARGET=spv
+
+// Test basic lowering to runtime function call.
+
+// CHECK-LABEL: test
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pow2clk wrote:

It would be slightly tighter to make this a check for `define {{.*}}test` as it could match the function declaration at present.

https://github.com/llvm/llvm-project/pull/115068