Fix 7441: CUDA boolean vector layout to use 1-byte elements (#7862)

* Fix 7441: CUDA boolean vector layout to use 1-byte elements

Boolean vectors (bool1, bool2, bool3, bool4) were incorrectly implemented
as integer-based types using 4 bytes per element instead of actual 1-byte
boolean elements on CUDA targets.

Changes:
- Update CUDA prelude to define boolean vectors as structs with bool fields
  instead of typedef aliases to integer vectors
- Implement CUDALayoutRulesImpl::GetVectorLayout to use 1-byte alignment
  for boolean vectors, matching actual CUDA memory layout behavior
- Update make_bool functions to populate struct fields correctly

This ensures boolean vectors have the same memory layout as bool[4] arrays:
- bool1: 1 byte (was 4 bytes)
- bool2: 2 bytes (was 8 bytes)
- bool3: 3 bytes (was 12 bytes)
- bool4: 4 bytes (was 16 bytes)

Fixes memory layout mismatch between Slang reflection API and actual
CUDA compilation, achieving 75% memory savings for boolean vector usage.

* Fix CI issues -

Add and update associated functions and operators

* Make boolX same as uchar

* Use align construct on struct for boolX

* Improve Test case for robust alignment checks

* Formatting

* Disable selected slangpy tests

* add metal check which is slightly different than cuda

* Test-1

* Test-2

* Test-3

* Test-4

* ReflectionChange

* cleanup and update

* _slang_select with plain bool is needed for reverse-loop-checkpoint-test

1 files changed, 22 insertions, 22 deletions

diff --git a/tests/cuda/cuda-reflection.slang.expected b/tests/cuda/cuda-reflection.slang.expected
index 636bcedce..a6eeda092 100644
--- a/tests/cuda/cuda-reflection.slang.expected
+++ b/tests/cuda/cuda-reflection.slang.expected
@@ -6,7 +6,7 @@ standard output = {
     "parameters": [
         {
             "name": "cb",
-            "binding": {"kind": "uniform", "offset": 0, "size": 8},
+            "binding": {"kind": "uniform", "offset": 0, "size": 8, "elementStride": 0},
             "type": {
                 "kind": "constantBuffer",
                 "elementType": {
@@ -28,7 +28,7 @@ standard output = {
                                                 "kind": "scalar",
                                                 "scalarType": "float64"
                                             },
-                                            "binding": {"kind": "uniform", "offset": 0, "size": 8}
+                                            "binding": {"kind": "uniform", "offset": 0, "size": 8, "elementStride": 0}
                                         },
                                         {
                                             "name": "b",
@@ -36,13 +36,13 @@ standard output = {
                                                 "kind": "scalar",
                                                 "scalarType": "uint8"
                                             },
-                                            "binding": {"kind": "uniform", "offset": 8, "size": 1}
+                                            "binding": {"kind": "uniform", "offset": 8, "size": 1, "elementStride": 0}
                                         }
                                     ]
                                 },
                                 "uniformStride": 16
                             },
-                            "binding": {"kind": "uniform", "offset": 0, "size": 16}
+                            "binding": {"kind": "uniform", "offset": 0, "size": 16, "elementStride": 16}
                         },
                         {
                             "name": "c",
@@ -50,7 +50,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "uint8"
                             },
-                            "binding": {"kind": "uniform", "offset": 16, "size": 1}
+                            "binding": {"kind": "uniform", "offset": 16, "size": 1, "elementStride": 0}
                         },
                         {
                             "name": "d",
@@ -63,7 +63,7 @@ standard output = {
                                     "scalarType": "float16"
                                 }
                             },
-                            "binding": {"kind": "uniform", "offset": 20, "size": 24}
+                            "binding": {"kind": "uniform", "offset": 20, "size": 24, "elementStride": 0}
                         },
                         {
                             "name": "e",
@@ -71,12 +71,12 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "uint8"
                             },
-                            "binding": {"kind": "uniform", "offset": 44, "size": 1}
+                            "binding": {"kind": "uniform", "offset": 44, "size": 1, "elementStride": 0}
                         }
                     ]
                 },
                 "containerVarLayout": {
-                    "binding": {"kind": "uniform", "offset": 0, "size": 8}
+                    "binding": {"kind": "uniform", "offset": 0, "size": 8, "elementStride": 0}
                 },
                 "elementVarLayout": {
                     "type": {
@@ -98,7 +98,7 @@ standard output = {
                                                     "kind": "scalar",
                                                     "scalarType": "float64"
                                                 },
-                                                "binding": {"kind": "uniform", "offset": 0, "size": 8}
+                                                "binding": {"kind": "uniform", "offset": 0, "size": 8, "elementStride": 0}
                                             },
                                             {
                                                 "name": "b",
@@ -106,13 +106,13 @@ standard output = {
                                                     "kind": "scalar",
                                                     "scalarType": "uint8"
                                                 },
-                                                "binding": {"kind": "uniform", "offset": 8, "size": 1}
+                                                "binding": {"kind": "uniform", "offset": 8, "size": 1, "elementStride": 0}
                                             }
                                         ]
                                     },
                                     "uniformStride": 16
                                 },
-                                "binding": {"kind": "uniform", "offset": 0, "size": 16}
+                                "binding": {"kind": "uniform", "offset": 0, "size": 16, "elementStride": 16}
                             },
                             {
                                 "name": "c",
@@ -120,7 +120,7 @@ standard output = {
                                     "kind": "scalar",
                                     "scalarType": "uint8"
                                 },
-                                "binding": {"kind": "uniform", "offset": 16, "size": 1}
+                                "binding": {"kind": "uniform", "offset": 16, "size": 1, "elementStride": 0}
                             },
                             {
                                 "name": "d",
@@ -133,7 +133,7 @@ standard output = {
                                         "scalarType": "float16"
                                     }
                                 },
-                                "binding": {"kind": "uniform", "offset": 20, "size": 24}
+                                "binding": {"kind": "uniform", "offset": 20, "size": 24, "elementStride": 0}
                             },
                             {
                                 "name": "e",
@@ -141,17 +141,17 @@ standard output = {
                                     "kind": "scalar",
                                     "scalarType": "uint8"
                                 },
-                                "binding": {"kind": "uniform", "offset": 44, "size": 1}
+                                "binding": {"kind": "uniform", "offset": 44, "size": 1, "elementStride": 0}
                             }
                         ]
                     },
-                    "binding": {"kind": "uniform", "offset": 0, "size": 48}
+                    "binding": {"kind": "uniform", "offset": 0, "size": 48, "elementStride": 0}
                 }
             }
         },
         {
             "name": "sb",
-            "binding": {"kind": "uniform", "offset": 8, "size": 16},
+            "binding": {"kind": "uniform", "offset": 8, "size": 16, "elementStride": 0},
             "type": {
                 "kind": "resource",
                 "baseShape": "structuredBuffer",
@@ -175,7 +175,7 @@ standard output = {
                                                 "kind": "scalar",
                                                 "scalarType": "float64"
                                             },
-                                            "binding": {"kind": "uniform", "offset": 0, "size": 8}
+                                            "binding": {"kind": "uniform", "offset": 0, "size": 8, "elementStride": 0}
                                         },
                                         {
                                             "name": "b",
@@ -183,13 +183,13 @@ standard output = {
                                                 "kind": "scalar",
                                                 "scalarType": "uint8"
                                             },
-                                            "binding": {"kind": "uniform", "offset": 8, "size": 1}
+                                            "binding": {"kind": "uniform", "offset": 8, "size": 1, "elementStride": 0}
                                         }
                                     ]
                                 },
                                 "uniformStride": 16
                             },
-                            "binding": {"kind": "uniform", "offset": 0, "size": 16}
+                            "binding": {"kind": "uniform", "offset": 0, "size": 16, "elementStride": 16}
                         },
                         {
                             "name": "c",
@@ -197,7 +197,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "uint8"
                             },
-                            "binding": {"kind": "uniform", "offset": 16, "size": 1}
+                            "binding": {"kind": "uniform", "offset": 16, "size": 1, "elementStride": 0}
                         },
                         {
                             "name": "d",
@@ -210,7 +210,7 @@ standard output = {
                                     "scalarType": "float16"
                                 }
                             },
-                            "binding": {"kind": "uniform", "offset": 20, "size": 24}
+                            "binding": {"kind": "uniform", "offset": 20, "size": 24, "elementStride": 0}
                         },
                         {
                             "name": "e",
@@ -218,7 +218,7 @@ standard output = {
                                 "kind": "scalar",
                                 "scalarType": "uint8"
                             },
-                            "binding": {"kind": "uniform", "offset": 44, "size": 1}
+                            "binding": {"kind": "uniform", "offset": 44, "size": 1, "elementStride": 0}
                         }
                     ]
                 }