[clang] [llvm] [PowerPC] Add Support for BCDSHIFT, BCDSHIFTR, BCDTRUNC, BCDUTRUNC, and BCDUSHIFT instruction support (PR #154715)

Aditi Medhane via llvm-commits llvm-commits at lists.llvm.org
Mon Sep 22 23:06:53 PDT 2025


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@@ -582,6 +582,11 @@ TARGET_BUILTIN(__builtin_ppc_bcdsub_p, "iiV16UcV16Uc", "",
 // P9 Binary-coded decimal (BCD) builtins.                                                
 TARGET_BUILTIN(__builtin_ppc_bcdcopysign, "V16UcV16UcV16Uc", "", "power9-vector")
 TARGET_BUILTIN(__builtin_ppc_bcdsetsign, "V16UcV16UcUc", "t", "power9-vector")
+TARGET_BUILTIN(__builtin_ppc_bcdshift, "V16UcV16UciUc", "t", "power9-vector")
+TARGET_BUILTIN(__builtin_ppc_bcdshiftround, "V16UcV16UciUc", "t", "power9-vector")
+TARGET_BUILTIN(__builtin_ppc_bcdtruncate, "V16UcV16UciUc", "t", "power9-vector")
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AditiRM wrote:

The type checking is handled in the backend lowering rather than in the builtin definition. The `SDTypeProfile` in `PPCInstrInfo.td`  makes sure the operand and result types for these BCD intrinsics are correct.

https://github.com/llvm/llvm-project/pull/154715


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