[clang] [Clang] Add constexpr support for AVX512 permutex2 intrinsics (PR #165085)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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<summary>
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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp,c -- clang/lib/AST/ByteCode/InterpBuiltin.cpp clang/lib/AST/ExprConstant.cpp clang/lib/Headers/avx10_2_512bf16intrin.h clang/lib/Headers/avx10_2bf16intrin.h clang/lib/Headers/avx512bwintrin.h clang/lib/Headers/avx512fintrin.h clang/lib/Headers/avx512fp16intrin.h clang/lib/Headers/avx512vbmiintrin.h clang/lib/Headers/avx512vbmivlintrin.h clang/lib/Headers/avx512vlbwintrin.h clang/lib/Headers/avx512vlfp16intrin.h clang/lib/Headers/avx512vlintrin.h clang/test/CodeGen/X86/avx512bw-builtins.c clang/test/CodeGen/X86/avx512f-builtins.c clang/test/CodeGen/X86/avx512vbmi-builtins.c clang/test/CodeGen/X86/avx512vbmivl-builtin.c clang/test/CodeGen/X86/avx512vl-builtins.c clang/test/CodeGen/X86/avx512vlbw-builtins.c --diff_from_common_commit
``````````

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changing `origin/main` to the base branch/commit you want to compare against.
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<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index 2888f1f08..8fab6efaf 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -13100,12 +13100,12 @@ bool VectorExprEvaluator::VisitCallExpr(const CallExpr *E) {
   case X86::BI__builtin_ia32_vpermi2varq128:
   case X86::BI__builtin_ia32_vpermi2varpd128: {
     APValue R;
-    if (!evalShuffleGeneric(
-            Info, E, R, [](unsigned DstIdx, unsigned ShuffleMask) {
-              int Offset = ShuffleMask & 0x1;
-              unsigned SrcIdx = (ShuffleMask >> 1) & 0x1;
-              return std::pair<unsigned, int>{SrcIdx, Offset};
-            }))
+    if (!evalShuffleGeneric(Info, E, R,
+                            [](unsigned DstIdx, unsigned ShuffleMask) {
+                              int Offset = ShuffleMask & 0x1;
+                              unsigned SrcIdx = (ShuffleMask >> 1) & 0x1;
+                              return std::pair<unsigned, int>{SrcIdx, Offset};
+                            }))
       return false;
     return Success(R, E);
   }
@@ -13114,12 +13114,12 @@ bool VectorExprEvaluator::VisitCallExpr(const CallExpr *E) {
   case X86::BI__builtin_ia32_vpermi2varq256:
   case X86::BI__builtin_ia32_vpermi2varpd256: {
     APValue R;
-    if (!evalShuffleGeneric(
-            Info, E, R, [](unsigned DstIdx, unsigned ShuffleMask) {
-              int Offset = ShuffleMask & 0x3;
-              unsigned SrcIdx = (ShuffleMask >> 2) & 0x1;
-              return std::pair<unsigned, int>{SrcIdx, Offset};
-            }))
+    if (!evalShuffleGeneric(Info, E, R,
+                            [](unsigned DstIdx, unsigned ShuffleMask) {
+                              int Offset = ShuffleMask & 0x3;
+                              unsigned SrcIdx = (ShuffleMask >> 2) & 0x1;
+                              return std::pair<unsigned, int>{SrcIdx, Offset};
+                            }))
       return false;
     return Success(R, E);
   }
@@ -13129,12 +13129,12 @@ bool VectorExprEvaluator::VisitCallExpr(const CallExpr *E) {
   case X86::BI__builtin_ia32_vpermi2varq512:
   case X86::BI__builtin_ia32_vpermi2varpd512: {
     APValue R;
-    if (!evalShuffleGeneric(
-            Info, E, R, [](unsigned DstIdx, unsigned ShuffleMask) {
-              int Offset = ShuffleMask & 0x7;
-              unsigned SrcIdx = (ShuffleMask >> 3) & 0x1;
-              return std::pair<unsigned, int>{SrcIdx, Offset};
-            }))
+    if (!evalShuffleGeneric(Info, E, R,
+                            [](unsigned DstIdx, unsigned ShuffleMask) {
+                              int Offset = ShuffleMask & 0x7;
+                              unsigned SrcIdx = (ShuffleMask >> 3) & 0x1;
+                              return std::pair<unsigned, int>{SrcIdx, Offset};
+                            }))
       return false;
     return Success(R, E);
   }
@@ -13143,35 +13143,35 @@ bool VectorExprEvaluator::VisitCallExpr(const CallExpr *E) {
   case X86::BI__builtin_ia32_vpermi2vard512:
   case X86::BI__builtin_ia32_vpermi2varps512: {
     APValue R;
-    if (!evalShuffleGeneric(
-            Info, E, R, [](unsigned DstIdx, unsigned ShuffleMask) {
-              int Offset = ShuffleMask & 0xF;
-              unsigned SrcIdx = (ShuffleMask >> 4) & 0x1;
-              return std::pair<unsigned, int>{SrcIdx, Offset};
-            }))
+    if (!evalShuffleGeneric(Info, E, R,
+                            [](unsigned DstIdx, unsigned ShuffleMask) {
+                              int Offset = ShuffleMask & 0xF;
+                              unsigned SrcIdx = (ShuffleMask >> 4) & 0x1;
+                              return std::pair<unsigned, int>{SrcIdx, Offset};
+                            }))
       return false;
     return Success(R, E);
   }
   case X86::BI__builtin_ia32_vpermi2varqi256:
   case X86::BI__builtin_ia32_vpermi2varhi512: {
     APValue R;
-    if (!evalShuffleGeneric(
-            Info, E, R, [](unsigned DstIdx, unsigned ShuffleMask) {
-              int Offset = ShuffleMask & 0x1F;
-              unsigned SrcIdx = (ShuffleMask >> 5) & 0x1;
-              return std::pair<unsigned, int>{SrcIdx, Offset};
-            }))
+    if (!evalShuffleGeneric(Info, E, R,
+                            [](unsigned DstIdx, unsigned ShuffleMask) {
+                              int Offset = ShuffleMask & 0x1F;
+                              unsigned SrcIdx = (ShuffleMask >> 5) & 0x1;
+                              return std::pair<unsigned, int>{SrcIdx, Offset};
+                            }))
       return false;
     return Success(R, E);
   }
   case X86::BI__builtin_ia32_vpermi2varqi512: {
     APValue R;
-    if (!evalShuffleGeneric(
-            Info, E, R, [](unsigned DstIdx, unsigned ShuffleMask) {
-              int Offset = ShuffleMask & 0x3F;
-              unsigned SrcIdx = (ShuffleMask >> 6) & 0x1;
-              return std::pair<unsigned, int>{SrcIdx, Offset};
-            }))
+    if (!evalShuffleGeneric(Info, E, R,
+                            [](unsigned DstIdx, unsigned ShuffleMask) {
+                              int Offset = ShuffleMask & 0x3F;
+                              unsigned SrcIdx = (ShuffleMask >> 6) & 0x1;
+                              return std::pair<unsigned, int>{SrcIdx, Offset};
+                            }))
       return false;
     return Success(R, E);
   }

``````````

</details>


https://github.com/llvm/llvm-project/pull/165085