[llvm] [HWASAN] Use sign extension in memToShadow() and untagPointer() (PR #103727)

[Samuel Holland via llvm-commits]

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@@ -658,7 +658,7 @@ void RISCVAsmPrinter::EmitHwasanMemaccessSymbols(Module &M) {
     OutStreamer->emitInstruction(
         MCInstBuilder(RISCV::SLLI).addReg(RISCV::X6).addReg(Reg).addImm(8),
         MCSTI);
-    OutStreamer->emitInstruction(MCInstBuilder(RISCV::SRLI)
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SiFiveHolland wrote:

Yes, I'll split this out

https://github.com/llvm/llvm-project/pull/103727