[AMDGPU] Remove some duplicated lines. NFC. (#128029)

Author: jayfoad

llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp

@@ -375,7 +375,6 @@ AMDGPUTargetLowering::AMDGPUTargetLowering(const TargetMachine &TM,
   setTruncStoreAction(MVT::v16f64, MVT::v16bf16, Expand);
   setTruncStoreAction(MVT::v16f64, MVT::v16f16, Expand);
   setTruncStoreAction(MVT::v16i64, MVT::v16i16, Expand);
-  setTruncStoreAction(MVT::v16i64, MVT::v16i16, Expand);
   setTruncStoreAction(MVT::v16i64, MVT::v16i8, Expand);
   setTruncStoreAction(MVT::v16i64, MVT::v16i8, Expand);
   setTruncStoreAction(MVT::v16i64, MVT::v16i1, Expand);

llvm/lib/Target/AMDGPU/BUFInstructions.td

@@ -1488,7 +1488,6 @@ defm : MUBUF_StoreIntrinsicPat<SIbuffer_store_format, f32, "BUFFER_STORE_FORMAT_
 defm : MUBUF_StoreIntrinsicPat<SIbuffer_store_format, i32, "BUFFER_STORE_FORMAT_X">;
 defm : MUBUF_StoreIntrinsicPat<SIbuffer_store_format, v2f32, "BUFFER_STORE_FORMAT_XY">;
 defm : MUBUF_StoreIntrinsicPat<SIbuffer_store_format, v2i32, "BUFFER_STORE_FORMAT_XY">;
-defm : MUBUF_StoreIntrinsicPat<SIbuffer_store_format, v2i32, "BUFFER_STORE_FORMAT_XY">;
 defm : MUBUF_StoreIntrinsicPat<SIbuffer_store_format, v3f32, "BUFFER_STORE_FORMAT_XYZ">;
 defm : MUBUF_StoreIntrinsicPat<SIbuffer_store_format, v3i32, "BUFFER_STORE_FORMAT_XYZ">;
 defm : MUBUF_StoreIntrinsicPat<SIbuffer_store_format, v4f32, "BUFFER_STORE_FORMAT_XYZW">;

llvm/lib/Target/AMDGPU/DSInstructions.td

@@ -886,7 +886,6 @@ defm : DSReadPat_mc <DS_READ_I8, i32, "sextloadi8_local">;
 defm : DSReadPat_mc <DS_READ_U8,  i32, "extloadi8_local">;
 defm : DSReadPat_mc <DS_READ_U8,  i32, "zextloadi8_local">;
 defm : DSReadPat_mc <DS_READ_I16, i32, "sextloadi16_local">;
-defm : DSReadPat_mc <DS_READ_I16, i32, "sextloadi16_local">;
 defm : DSReadPat_mc <DS_READ_U16, i32, "extloadi16_local">;
 defm : DSReadPat_mc <DS_READ_U16, i32, "zextloadi16_local">;
 defm : DSReadPat_t16 <DS_READ_I8,  i16, "sextloadi8_local">;