[clang] [Clang][CodeGen] Use EmitLoadOfLValue instead of EmitLoadOfScalar to get LHS for complex compound assignment (PR #166798)

[Benjamin Stott via cfe-commits]

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+// Reduced from https://github.com/llvm/llvm-project/issues/166512
+// RUN: %clang_cc1 %s -emit-obj -std=c23 -fsanitize=bool -o %t
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BStott6 wrote:

If we're not testing for the assertion failure, this test might not be needed as the code generation is already checked by `complex-compound-assign-bitfield.c`. What do you think?

https://github.com/llvm/llvm-project/pull/166798