Use scratchData on `IRInst` to replace HashSets. (#2978)

* Use scratchData on `IRInst` to replace HashSets.

* Update test results.

* Initialize scratchData.

* Update autodiff documentation.

* Use enum instead of bool.

---------

Co-authored-by: Yong He <yhe@nvidia.com>

3 files changed, 14 insertions, 22 deletions

diff --git a/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-assign.slang.1.expected b/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-assign.slang.1.expected
index c7be594d1..97b04be47 100644
--- a/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-assign.slang.1.expected
+++ b/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-assign.slang.1.expected
@@ -37,7 +37,7 @@ void main()
     hitObjectRecordMissNV(hitObj_1, _S5, ray_0.Origin_0, ray_0.TMin_0, ray_0.Direction_0, ray_0.TMax_0);
     bool _S6 = (hitObjectIsMissNV((hitObj_1)));
     uint _S7 = uint(int(_S6));
-    ((outputBuffer_0)._data[(uint(idx_0))]) = _S7;
+    ((outputBuffer_0)._data[(_S4)]) = _S7;
     return;
 }
 
diff --git a/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-make-hit.slang.1.expected b/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-make-hit.slang.1.expected
index 938a19480..c9589b805 100644
--- a/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-make-hit.slang.1.expected
+++ b/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-make-hit.slang.1.expected
@@ -91,29 +91,21 @@ void main()
     ray_2.Direction_0 = vec3(0.0, 1.0, 0.0);
     ray_2.TMax_0 = 10000.0;
     uint _S10 = uint(idx_0);
-    int _S11 = idx_0 * 2;
-    uint _S12 = uint(_S11);
-    int _S13 = idx_0 * 3;
-    uint _S14 = uint(_S13);
-    RayDesc_0 _S15 = ray_2;
+    uint _S11 = uint(idx_0 * 2);
+    uint _S12 = uint(idx_0 * 3);
+    RayDesc_0 _S13 = ray_2;
     hitObjectNV hitObj_0;
-    int _S16 = int(_S10);
-    int _S17 = int(_S12);
-    int _S18 = int(_S14);
-    hitObjectRecordHitWithIndexNV(hitObj_0, scene_0, _S16, _S17, _S18, 0U, 0U, _S15.Origin_0, _S15.TMin_0, _S15.Direction_0, _S15.TMax_0, (0));
+    int _S14 = int(_S10);
+    int _S15 = int(_S11);
+    int _S16 = int(_S12);
+    hitObjectRecordHitWithIndexNV(hitObj_0, scene_0, _S14, _S15, _S16, 0U, 0U, _S13.Origin_0, _S13.TMin_0, _S13.Direction_0, _S13.TMax_0, (0));
     uint r_3 = calcValue_0(hitObj_0);
-    uint _S19 = uint(idx_0);
-    uint _S20 = uint(_S11);
-    uint _S21 = uint(_S13);
-    RayDesc_0 _S22 = ray_2;
+    RayDesc_0 _S17 = ray_2;
     hitObjectNV hitObj_1;
-    int _S23 = int(_S19);
-    int _S24 = int(_S21);
-    int _S25 = int(_S20);
-    hitObjectRecordHitNV(hitObj_1, scene_0, _S23, _S24, _S25, 0U, 0U, 4U, _S22.Origin_0, _S22.TMin_0, _S22.Direction_0, _S22.TMax_0, (0));
-    uint _S26 = calcValue_0(hitObj_1);
-    uint r_4 = r_3 + _S26;
-    ((outputBuffer_0)._data[(uint(idx_0))]) = r_4;
+    hitObjectRecordHitNV(hitObj_1, scene_0, _S14, _S16, _S15, 0U, 0U, 4U, _S17.Origin_0, _S17.TMin_0, _S17.Direction_0, _S17.TMax_0, (0));
+    uint _S18 = calcValue_0(hitObj_1);
+    uint r_4 = r_3 + _S18;
+    ((outputBuffer_0)._data[(_S10)]) = r_4;
     return;
 }
 
diff --git a/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-make-miss.slang.1.expected b/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-make-miss.slang.1.expected
index 3afe48bc9..c79c238e6 100644
--- a/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-make-miss.slang.1.expected
+++ b/tests/hlsl-intrinsic/shader-execution-reordering/hit-object-make-miss.slang.1.expected
@@ -32,7 +32,7 @@ void main()
     hitObjectRecordMissNV(hitObj_0, _S2, ray_0.Origin_0, ray_0.TMin_0, ray_0.Direction_0, ray_0.TMax_0);
     bool _S3 = (hitObjectIsMissNV((hitObj_0)));
     uint _S4 = uint(int(_S3));
-    ((outputBuffer_0)._data[(uint(idx_0))]) = _S4;
+    ((outputBuffer_0)._data[(_S2)]) = _S4;
     return;
 }