[clang] [lldb] [llvm] [APInt] Fix APInt constructions where value does not fit bitwidth (NFCI) (PR #80309)

[Simon Pilgrim via cfe-commits]

================
@@ -171,7 +171,7 @@ bool HexagonGenExtract::convert(Instruction *In) {
     // this value.
     if (!LogicalSR && (SR > SL))
       return false;
-    APInt A = APInt(BW, ~0ULL).lshr(SR).shl(SL);
+    APInt A = APInt(BW, ~0ULL, true).lshr(SR).shl(SL);
----------------
RKSimon wrote:

can we not use APInt::getBitsSet here?

https://github.com/llvm/llvm-project/pull/80309
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