1 files changed, 165 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/GlobalISel/select-xor.mir b/test/CodeGen/AArch64/GlobalISel/select-xor.mir
new file mode 100644
index 0000000000000..e787849c8d1bf
--- /dev/null
+++ b/test/CodeGen/AArch64/GlobalISel/select-xor.mir
@@ -0,0 +1,165 @@
+# RUN: llc -O0 -mtriple=aarch64-- -run-pass=instruction-select -verify-machineinstrs -global-isel %s -o - | FileCheck %s
+
+--- |
+  target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
+
+  define void @xor_s32_gpr() { ret void }
+  define void @xor_s64_gpr() { ret void }
+  define void @xor_constant_n1_s32_gpr() { ret void }
+  define void @xor_constant_n1_s64_gpr() { ret void }
+  define void @xor_constant_n1_s32_gpr_2bb() { ret void }
+
+...
+
+---
+# Check that we select a 32-bit GPR G_XOR into EORWrr on GPR32.
+# Also check that we constrain the register class of the COPY to GPR32.
+# CHECK-LABEL: name: xor_s32_gpr
+name:            xor_s32_gpr
+legalized:       true
+regBankSelected: true
+
+# CHECK:      registers:
+# CHECK-NEXT:  - { id: 0, class: gpr32 }
+# CHECK-NEXT:  - { id: 1, class: gpr32 }
+# CHECK-NEXT:  - { id: 2, class: gpr32 }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: gpr }
+  - { id: 2, class: gpr }
+
+# CHECK:  body:
+# CHECK:    %0 = COPY %w0
+# CHECK:    %1 = COPY %w1
+# CHECK:    %2 = EORWrr %0, %1
+body:             |
+  bb.0:
+    liveins: %w0, %w1
+
+    %0(s32) = COPY %w0
+    %1(s32) = COPY %w1
+    %2(s32) = G_XOR %0, %1
+    %w0 = COPY %2(s32)
+...
+
+---
+# Same as xor_s64_gpr, for 64-bit operations.
+# CHECK-LABEL: name: xor_s64_gpr
+name:            xor_s64_gpr
+legalized:       true
+regBankSelected: true
+
+# CHECK:      registers:
+# CHECK-NEXT:  - { id: 0, class: gpr64 }
+# CHECK-NEXT:  - { id: 1, class: gpr64 }
+# CHECK-NEXT:  - { id: 2, class: gpr64 }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: gpr }
+  - { id: 2, class: gpr }
+
+# CHECK:  body:
+# CHECK:    %0 = COPY %x0
+# CHECK:    %1 = COPY %x1
+# CHECK:    %2 = EORXrr %0, %1
+body:             |
+  bb.0:
+    liveins: %x0, %x1
+
+    %0(s64) = COPY %x0
+    %1(s64) = COPY %x1
+    %2(s64) = G_XOR %0, %1
+    %x0 = COPY %2(s64)
+...
+
+---
+# Check that we select a 32-bit GPR G_XOR into EORWrr on GPR32.
+# Also check that we constrain the register class of the COPY to GPR32.
+# CHECK-LABEL: name: xor_constant_n1_s32_gpr
+name:            xor_constant_n1_s32_gpr
+legalized:       true
+regBankSelected: true
+
+# CHECK:      registers:
+# CHECK-NEXT:  - { id: 0, class: gpr32 }
+# CHECK-NEXT:  - { id: 1, class: gpr }
+# CHECK-NEXT:  - { id: 2, class: gpr32 }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: gpr }
+  - { id: 2, class: gpr }
+
+# CHECK:  body:
+# CHECK:    %0 = COPY %w0
+# CHECK:    %2 = ORNWrr %wzr, %0
+body:             |
+  bb.0:
+    liveins: %w0
+
+    %0(s32) = COPY %w0
+    %1(s32) = G_CONSTANT i32 -1
+    %2(s32) = G_XOR %0, %1
+    %w0 = COPY %2(s32)
+...
+
+---
+# Same as xor_constant_n1_s64_gpr, for 64-bit operations.
+# CHECK-LABEL: name: xor_constant_n1_s64_gpr
+name:            xor_constant_n1_s64_gpr
+legalized:       true
+regBankSelected: true
+
+# CHECK:      registers:
+# CHECK-NEXT:  - { id: 0, class: gpr64 }
+# CHECK-NEXT:  - { id: 1, class: gpr }
+# CHECK-NEXT:  - { id: 2, class: gpr64 }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: gpr }
+  - { id: 2, class: gpr }
+
+# CHECK:  body:
+# CHECK:    %0 = COPY %x0
+# CHECK:    %2 = ORNXrr %xzr, %0
+body:             |
+  bb.0:
+    liveins: %x0
+
+    %0(s64) = COPY %x0
+    %1(s64) = G_CONSTANT i64 -1
+    %2(s64) = G_XOR %0, %1
+    %x0 = COPY %2(s64)
+...
+
+---
+# Check that we can obtain constants from other basic blocks.
+# CHECK-LABEL: name: xor_constant_n1_s32_gpr_2bb
+name:            xor_constant_n1_s32_gpr_2bb
+legalized:       true
+regBankSelected: true
+
+# CHECK:      registers:
+# CHECK-NEXT:  - { id: 0, class: gpr32 }
+# CHECK-NEXT:  - { id: 1, class: gpr }
+# CHECK-NEXT:  - { id: 2, class: gpr32 }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: gpr }
+  - { id: 2, class: gpr }
+
+# CHECK:  body:
+# CHECK:    B %bb.1
+# CHECK:    %0 = COPY %w0
+# CHECK:    %2 = ORNWrr %wzr, %0
+
+body:             |
+  bb.0:
+    liveins: %w0, %w1
+    successors: %bb.1
+    %1(s32) = G_CONSTANT i32 -1
+    G_BR %bb.1
+  bb.1:
+    %0(s32) = COPY %w0
+    %2(s32) = G_XOR %0, %1
+    %w0 = COPY %2(s32)
+...