Index: llvm/lib/Target/RISCV/RISCVInstrInfo.td
===================================================================
--- llvm/lib/Target/RISCV/RISCVInstrInfo.td
+++ llvm/lib/Target/RISCV/RISCVInstrInfo.td
@@ -998,6 +998,12 @@
 def : Pat<(brcond (XLenVT (xor GPR:$cond, 1)), bb:$imm12),
           (BEQ GPR:$cond, X0, bb:$imm12)>;
 
+// Lower (a > -1) to (a >= 0) and (a < 1) to (0 >= a).
+def : Pat<(brcond (XLenVT (setlt XLenVT:$lhs, 1)), bb:$dst),
+	  (BGE X0, XLenVT:$lhs, bb:$dst)>;
+def : Pat<(brcond (XLenVT (setgt XLenVT:$lhs, -1)), bb:$dst),
+	  (BGE XLenVT:$lhs, X0, bb:$dst)>;
+
 let isBarrier = 1, isBranch = 1, isTerminator = 1 in
 def PseudoBR : Pseudo<(outs), (ins simm21_lsb0_jal:$imm20), [(br bb:$imm20)]>,
                PseudoInstExpansion<(JAL X0, simm21_lsb0_jal:$imm20)>;