diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfo.td b/llvm/lib/Target/RISCV/RISCVInstrInfo.td index 78fd09fbf387..12e002fe5215 100644 --- a/llvm/lib/Target/RISCV/RISCVInstrInfo.td +++ b/llvm/lib/Target/RISCV/RISCVInstrInfo.td @@ -1263,10 +1263,14 @@ def : Pat<(seteq GPR:$rs1, 0), (SLTIU GPR:$rs1, 1)>; def : Pat<(seteq GPR:$rs1, GPR:$rs2), (SLTIU (XOR GPR:$rs1, GPR:$rs2), 1)>; def : Pat<(seteq GPR:$rs1, simm12_plus1:$imm12), (SLTIU (ADDI GPR:$rs1, (NegImm simm12_plus1:$imm12)), 1)>; +def : Pat<(seteq GPR:$rs1, -2048), + (SLTIU (XORI GPR:$rs1, -2048), 1)>; def : Pat<(setne GPR:$rs1, 0), (SLTU X0, GPR:$rs1)>; def : Pat<(setne GPR:$rs1, GPR:$rs2), (SLTU X0, (XOR GPR:$rs1, GPR:$rs2))>; def : Pat<(setne GPR:$rs1, simm12_plus1:$imm12), (SLTU X0, (ADDI GPR:$rs1, (NegImm simm12_plus1:$imm12)))>; +def : Pat<(setne GPR:$rs1, -2048), + (SLTU X0, (XORI GPR:$rs1, -2048))>; def : Pat<(setugt GPR:$rs1, GPR:$rs2), (SLTU GPR:$rs2, GPR:$rs1)>; def : Pat<(setuge GPR:$rs1, GPR:$rs2), (XORI (SLTU GPR:$rs1, GPR:$rs2), 1)>; def : Pat<(setule GPR:$rs1, GPR:$rs2), (XORI (SLTU GPR:$rs2, GPR:$rs1), 1)>; diff --git a/llvm/test/CodeGen/RISCV/i32-icmp.ll b/llvm/test/CodeGen/RISCV/i32-icmp.ll index deb7dfd883bf..3120f3a9b511 100644 --- a/llvm/test/CodeGen/RISCV/i32-icmp.ll +++ b/llvm/test/CodeGen/RISCV/i32-icmp.ll @@ -51,8 +51,7 @@ define i32 @icmp_eq_constant_2048(i32 %a) nounwind { define i32 @icmp_eq_constant_neg_2048(i32 %a) nounwind { ; RV32I-LABEL: icmp_eq_constant_neg_2048: ; RV32I: # %bb.0: -; RV32I-NEXT: li a1, -2048 -; RV32I-NEXT: xor a0, a0, a1 +; RV32I-NEXT: xori a0, a0, -2048 ; RV32I-NEXT: seqz a0, a0 ; RV32I-NEXT: ret %1 = icmp eq i32 %a, -2048 @@ -130,8 +129,7 @@ define i32 @icmp_ne_constant_2048(i32 %a) nounwind { define i32 @icmp_ne_constant_neg_2048(i32 %a) nounwind { ; RV32I-LABEL: icmp_ne_constant_neg_2048: ; RV32I: # %bb.0: -; RV32I-NEXT: li a1, -2048 -; RV32I-NEXT: xor a0, a0, a1 +; RV32I-NEXT: xori a0, a0, -2048 ; RV32I-NEXT: snez a0, a0 ; RV32I-NEXT: ret %1 = icmp ne i32 %a, -2048 diff --git a/llvm/test/CodeGen/RISCV/i64-icmp.ll b/llvm/test/CodeGen/RISCV/i64-icmp.ll index 503a4f1aff87..10d660af92f5 100644 --- a/llvm/test/CodeGen/RISCV/i64-icmp.ll +++ b/llvm/test/CodeGen/RISCV/i64-icmp.ll @@ -51,8 +51,7 @@ define i64 @icmp_eq_constant_2048(i64 %a) nounwind { define i64 @icmp_eq_constant_neg_2048(i64 %a) nounwind { ; RV64I-LABEL: icmp_eq_constant_neg_2048: ; RV64I: # %bb.0: -; RV64I-NEXT: li a1, -2048 -; RV64I-NEXT: xor a0, a0, a1 +; RV64I-NEXT: xori a0, a0, -2048 ; RV64I-NEXT: seqz a0, a0 ; RV64I-NEXT: ret %1 = icmp eq i64 %a, -2048 @@ -130,8 +129,7 @@ define i64 @icmp_ne_constant_2048(i64 %a) nounwind { define i64 @icmp_ne_constant_neg_2048(i64 %a) nounwind { ; RV64I-LABEL: icmp_ne_constant_neg_2048: ; RV64I: # %bb.0: -; RV64I-NEXT: li a1, -2048 -; RV64I-NEXT: xor a0, a0, a1 +; RV64I-NEXT: xori a0, a0, -2048 ; RV64I-NEXT: snez a0, a0 ; RV64I-NEXT: ret %1 = icmp ne i64 %a, -2048