[llvm] [SystemZ] Use the same PatFrag for all "insert imm" fragments (NFC) (PR #119962)

[Sergei Barannikov via llvm-commits]

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@@ -757,23 +757,18 @@ defm block_or  : block_op<or>;
 defm block_xor : block_op<xor>;
 
 // Insertions.
-def inserti8 : PatFrag<(ops node:$src1, node:$src2),
-                       (or (and node:$src1, -256), node:$src2)>;
-
-class inserti16<int mask> : PatFrag<(ops node:$src1, node:$src2),
-                                    (or (and node:$src1, mask), node:$src2)>;
-
-def insertll   : inserti16<0xffff0000>;
-def insertlh   : inserti16<0x0000ffff>;
-def insertll64 : inserti16<0xffffffffffff0000>;
-def insertlh64 : inserti16<0xffffffff0000ffff>;
-def inserthl64 : inserti16<0xffff0000ffffffff>;
-def inserthh64 : inserti16<0x0000ffffffffffff>;
-
-def insertlf : PatFrag<(ops node:$src1, node:$src2),
-                       (or (and node:$src1, 0xffffffff00000000), node:$src2)>;
-def inserthf : PatFrag<(ops node:$src1, node:$src2),
-                       (or (and node:$src1, 0x00000000ffffffff), node:$src2)>;
+class insert_imm<int mask> : PatFrag<(ops node:$src1, node:$src2),
+                                     (or (and node:$src1, mask), node:$src2)>;
+
+def inserti8   : insert_imm<-256>;
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s-barannikov wrote:

This can probably be written as `0xffffffffffffff00`, but not `0xffffff00` since it is used in 64-bit patterns too, but I didn't spend much time investigating.


https://github.com/llvm/llvm-project/pull/119962