[llvm] [Intrinsic] Unify IIT_STRUCT{2-9} into ITT_STRUCT to support upto 257 return value (PR #160434)

[Rahul Joshi via llvm-commits]

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@@ -1,22 +1,58 @@
 // RUN: llvm-tblgen -gen-intrinsic-enums -I %p/../../include %s -DTEST_INTRINSICS_SUPPRESS_DEFS | FileCheck %s --check-prefix=CHECK-ENUM
-// RUN: llvm-tblgen -gen-intrinsic-impl -I %p/../../include %s -DTEST_INTRINSICS_SUPPRESS_DEFS > /dev/null 2>&1
+// RUN: llvm-tblgen -gen-intrinsic-impl -I %p/../../include %s -DTEST_INTRINSICS_SUPPRESS_DEFS | FileCheck %s --check-prefix=CHECK-IMPL
 // RUN: not llvm-tblgen -gen-intrinsic-impl -I %p/../../include %s -DTEST_INTRINSICS_SUPPRESS_DEFS -DENABLE_ERROR 2>&1 | FileCheck %s --check-prefix=CHECK-ERROR
 
 // XFAIL: vg_leak
 
 include "llvm/IR/Intrinsics.td"
 
-// Make sure we can return up to 9 values.
-// CHECK-ENUM: returns_9_results = {{[0-9]+}}, // llvm.returns.9.results
-def int_returns_9_results : Intrinsic<
-                              !listsplat(llvm_anyint_ty, 9),
-                              [], [], "llvm.returns.9.results">;
+// Make sure we can return up to 257 values. Intrinsics are in alphabetical order.
+// CHECK-ENUM: returns_a0_results = {{[0-9]+}}, // llvm.returns.a0.results
+// CHECK-ENUM: returns_b1_results, // llvm.returns.b1.results
+// CHECK-ENUM: returns_c2_results, // llvm.returns.c2.results
+// CHECK-ENUM: returns_d9_results, // llvm.returns.d9.results
+// CHECK-ENUM: returns_e10_results, // llvm.returns.e10.results
+// CHECK-ENUM: returns_f257_results, // llvm.returns.f257.results
 
-#ifdef ENABLE_ERROR
-// CHECK-ERROR: error: intrinsics can only return upto 9 values, 'int_returns_10_results' returns 10 values
-// CHECK-ERROR-NEXT: def int_returns_10_results : Intrinsic<
-def int_returns_10_results : Intrinsic<
+// Make sure the encoding table is correctly generated.
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jurahul wrote:

Right, hence out of scope for this PR.

https://github.com/llvm/llvm-project/pull/160434