[clang] [clang][Interp] Implement __builtin_bit_cast (PR #68288)

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Timm =?utf-8?q?B=C3=A4der?= <tbaeder at redhat.com>,
Timm =?utf-8?q?B=C3=A4der?= <tbaeder at redhat.com>,
Timm =?utf-8?q?B=C3=A4der?= <tbaeder at redhat.com>,
Timm =?utf-8?q?B=C3=A4der?= <tbaeder at redhat.com>,
Timm =?utf-8?q?B=C3=A4der?= <tbaeder at redhat.com>,
Timm =?utf-8?q?B=C3=A4der?= <tbaeder at redhat.com>,
Timm =?utf-8?q?B=C3=A4der?= <tbaeder at redhat.com>
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In-Reply-To: <llvm.org/llvm/llvm-project/pull/68288 at github.com>


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@@ -134,6 +141,10 @@ class Floating final {
 
     return Floating(APFloat(Sem, API));
   }
+  void bitcastToMemory(std::byte *Buff) {
+    llvm::APInt API = F.bitcastToAPInt();
+    llvm::StoreIntToMemory(API, (uint8_t *)Buff, bitWidth() / 8);
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cor3ntin wrote:

Should that use `getCharWidth()` ?

https://github.com/llvm/llvm-project/pull/68288