[clang] [llvm] [PowerPC] Add BCDCOPYSIGN and BCDSETSIGN Instruction Support (PR #144874)

[Aditi Medhane via cfe-commits]

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@@ -0,0 +1,29 @@
+// NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+// REQUIRES: powerpc-registered-target
+// RUN: %clang_cc1 -triple powerpc64le-unknown-unknown -O2 -target-cpu pwr9 \
+// RUN:   -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc64-unknown-unknown -O2 -target-cpu pwr9 \
+// RUN:   -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc-unknown-unknown -O2 -target-cpu pwr9 \
+// RUN:   -emit-llvm %s -o - | FileCheck %s
+
+// CHECK-LABEL: test_bcdcopysign
+// CHECK:         [[TMP0:%.*]] = tail call <16 x i8> @llvm.ppc.bcdcopysign(<16 x i8> %a, <16 x i8> %b)
+// CHECK-NEXT:    ret <16 x i8> [[TMP0]]
+vector unsigned char test_bcdcopysign(vector unsigned char a, vector unsigned char b) {
+    return __builtin_ppc_bcdcopysign(a, b);
+}
+
+// CHECK-LABEL: test_bcdsetsign_imm0
+// CHECK:         [[TMP0:%.*]] = tail call <16 x i8> @llvm.ppc.bcdsetsign(<16 x i8> %a, i32 0)
+// CHECK-NEXT:    ret <16 x i8> [[TMP0]]
+vector unsigned char test_bcdsetsign_imm0(vector unsigned char a) {
+    return __builtin_ppc_bcdsetsign(a, '\0');
+}
+
+// CHECK-LABEL: test_bcdsetsign_imm1
+// CHECK:         [[TMP0:%.*]] = tail call <16 x i8> @llvm.ppc.bcdsetsign(<16 x i8> %a, i32 1)
+// CHECK-NEXT:    ret <16 x i8> [[TMP0]]
+vector unsigned char test_bcdsetsign_imm1(vector unsigned char a) {
+    return __builtin_ppc_bcdsetsign(a, '\1');
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AditiRM wrote:

While it works with 0 and 1, we use '\0' and '\1' as that’s the conventional way to pass an unsigned character.

https://github.com/llvm/llvm-project/pull/144874