Index: lib/Target/AArch64/AArch64InstructionSelector.cpp
===================================================================
--- lib/Target/AArch64/AArch64InstructionSelector.cpp
+++ lib/Target/AArch64/AArch64InstructionSelector.cpp
@@ -1076,8 +1076,9 @@
       return false;
     }
 
-    const AArch64CC::CondCode CC = changeICMPPredToAArch64CC(
-        (CmpInst::Predicate)I.getOperand(1).getPredicate());
+    const AArch64CC::CondCode invCC = changeICMPPredToAArch64CC(
+      CmpInst::getInversePredicate(
+        (CmpInst::Predicate)I.getOperand(1).getPredicate()));
 
     MachineInstr &CmpMI = *BuildMI(MBB, I, I.getDebugLoc(), TII.get(CmpOpc))
                                .addDef(ZReg)
@@ -1089,7 +1090,7 @@
              .addDef(I.getOperand(0).getReg())
              .addUse(AArch64::WZR)
              .addUse(AArch64::WZR)
-             .addImm(CC);
+             .addImm(invCC);
 
     constrainSelectedInstRegOperands(CmpMI, TII, TRI, RBI);
     constrainSelectedInstRegOperands(CSetMI, TII, TRI, RBI);
Index: test/CodeGen/AArch64/GlobalISel/arm64-instructionselect.mir
===================================================================
--- test/CodeGen/AArch64/GlobalISel/arm64-instructionselect.mir
+++ test/CodeGen/AArch64/GlobalISel/arm64-instructionselect.mir
@@ -2858,13 +2858,13 @@
 
 # CHECK:  body:
 # CHECK:    %wzr = SUBSWrr %0, %0, implicit-def %nzcv
-# CHECK:    %1 = CSINCWr %wzr, %wzr, 0, implicit %nzcv
+# CHECK:    %1 = CSINCWr %wzr, %wzr, 1, implicit %nzcv
 
 # CHECK:    %xzr = SUBSXrr %2, %2, implicit-def %nzcv
-# CHECK:    %3 = CSINCWr %wzr, %wzr, 2, implicit %nzcv
+# CHECK:    %3 = CSINCWr %wzr, %wzr, 3, implicit %nzcv
 
 # CHECK:    %xzr = SUBSXrr %4, %4, implicit-def %nzcv
-# CHECK:    %5 = CSINCWr %wzr, %wzr, 1, implicit %nzcv
+# CHECK:    %5 = CSINCWr %wzr, %wzr, 0, implicit %nzcv
 
 body:             |
   bb.0: