[LoongArch] Pre-commit test for immediate value materialization using BSTRINS_D

Reviewed By: SixWeining

Pull Request: #106331

Author: wangleiat

llvm/test/CodeGen/LoongArch/imm.ll

@@ -164,3 +164,65 @@ define i64 @imm0008000080000800() {
 ; CHECK-NEXT:    ret
   ret i64 2251801961170944
 }
+
+define i64 @imm14000000a() {
+; CHECK-LABEL: imm14000000a:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    lu12i.w $a0, 262144
+; CHECK-NEXT:    ori $a0, $a0, 10
+; CHECK-NEXT:    lu32i.d $a0, 1
+; CHECK-NEXT:    ret
+  ret i64 5368709130
+}
+
+define i64 @imm0fff000000000fff() {
+; CHECK-LABEL: imm0fff000000000fff:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    ori $a0, $zero, 4095
+; CHECK-NEXT:    lu32i.d $a0, -65536
+; CHECK-NEXT:    lu52i.d $a0, $a0, 255
+; CHECK-NEXT:    ret
+  ret i64 1152640029630140415
+}
+
+define i64 @immffecffffffffffec() {
+; CHECK-LABEL: immffecffffffffffec:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    addi.w $a0, $zero, -20
+; CHECK-NEXT:    lu32i.d $a0, -196609
+; CHECK-NEXT:    lu52i.d $a0, $a0, -2
+; CHECK-NEXT:    ret
+  ret i64 -5348024557502484
+}
+
+define i64 @imm1c000000700000() {
+; CHECK-LABEL: imm1c000000700000:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    lu12i.w $a0, 1792
+; CHECK-NEXT:    lu32i.d $a0, -262144
+; CHECK-NEXT:    lu52i.d $a0, $a0, 1
+; CHECK-NEXT:    ret
+  ret i64 7881299355238400
+}
+
+define i64 @immf0f0f0f0f0f0f0f0() {
+; CHECK-LABEL: immf0f0f0f0f0f0f0f0:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    lu12i.w $a0, -61681
+; CHECK-NEXT:    ori $a0, $a0, 240
+; CHECK-NEXT:    lu32i.d $a0, 61680
+; CHECK-NEXT:    lu52i.d $a0, $a0, -241
+; CHECK-NEXT:    ret
+  ret i64 -1085102592571150096
+}
+
+define i64 @imm110000014000000a() {
+; CHECK-LABEL: imm110000014000000a:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    lu12i.w $a0, 262144
+; CHECK-NEXT:    ori $a0, $a0, 10
+; CHECK-NEXT:    lu32i.d $a0, 1
+; CHECK-NEXT:    lu52i.d $a0, $a0, 272
+; CHECK-NEXT:    ret
+  ret i64 1224979104013484042
+}