[GlobalISel][X86] Test G_CONSTANT i32 0 TableGen'erated selection.NFC.

llvm-svn: 306537

1 files changed, 21 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/GlobalISel/select-constant.mir b/llvm/test/CodeGen/X86/GlobalISel/select-constant.mir
index 7902a5084ce..4b91b5f9f09 100644
--- a/llvm/test/CodeGen/X86/GlobalISel/select-constant.mir
+++ b/llvm/test/CodeGen/X86/GlobalISel/select-constant.mir
@@ -13,6 +13,10 @@
     ret i32 4
   }
 
+  define i32 @const_i32_0() {
+    ret i32 0
+  }
+
   define i64 @const_i64() {
     ret i64 68719476720
   }
@@ -84,6 +88,23 @@ body:             |
 
 ...
 ---
+name:            const_i32_0
+# CHECK-LABEL: name:  const_i32_0
+legalized:       true
+regBankSelected: true
+# CHECK:      registers:
+# CHECK-NEXT:   - { id: 0, class: gr32, preferred-register: '' }
+registers:
+  - { id: 0, class: gpr }
+# CHECK:          %0 = MOV32r0 implicit-def %eflags
+body:             |
+  bb.1 (%ir-block.0):
+    %0(s32) = G_CONSTANT i32 0
+    %eax = COPY %0(s32)
+    RET 0, implicit %eax
+
+...
+---
 name:            const_i64
 legalized:       true
 regBankSelected: true