[CSKY][test][NFC] Add tests of conditional branch and value select

These tests will be optimzied with BTSTI16/BTSTI32
in the future.

Reviewed By: zixuan-wu

Differential Revision: https://reviews.llvm.org/D154767

Author: benshi001

llvm/test/CodeGen/CSKY/br.ll

@@ -6611,3 +6611,232 @@ label1:
 label2:
   ret i1 0
 }
+
+define i32 @br_bit_test_eq_0(i32 %c) {
+; CHECK-LABEL: br_bit_test_eq_0:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    movih32 a1, 2
+; CHECK-NEXT:    and16 a0, a1
+; CHECK-NEXT:    bnez32 a0, .LBB145_2
+; CHECK-NEXT:  # %bb.1: # %label1
+; CHECK-NEXT:    movi16 a0, 1
+; CHECK-NEXT:    rts16
+; CHECK-NEXT:  .LBB145_2: # %label2
+; CHECK-NEXT:    movi16 a0, 0
+; CHECK-NEXT:    rts16
+;
+; GENERIC-LABEL: br_bit_test_eq_0:
+; GENERIC:       # %bb.0:
+; GENERIC-NEXT:    .cfi_def_cfa_offset 0
+; GENERIC-NEXT:    subi16 sp, sp, 4
+; GENERIC-NEXT:    .cfi_def_cfa_offset 4
+; GENERIC-NEXT:    movi16 a1, 0
+; GENERIC-NEXT:    lsli16 a2, a1, 24
+; GENERIC-NEXT:    movi16 a3, 2
+; GENERIC-NEXT:    lsli16 a3, a3, 16
+; GENERIC-NEXT:    or16 a3, a2
+; GENERIC-NEXT:    lsli16 a2, a1, 8
+; GENERIC-NEXT:    or16 a2, a3
+; GENERIC-NEXT:    or16 a2, a1
+; GENERIC-NEXT:    and16 a2, a0
+; GENERIC-NEXT:    cmpnei16 a2, 0
+; GENERIC-NEXT:    bt16 .LBB145_2
+; GENERIC-NEXT:  # %bb.1: # %label1
+; GENERIC-NEXT:    movi16 a0, 1
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+; GENERIC-NEXT:  .LBB145_2: # %label2
+; GENERIC-NEXT:    movi16 a0, 0
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+  %t0 = and i32 %c, 131072
+  %t1 = icmp eq i32 %t0, 0
+  br i1 %t1, label %label1, label %label2
+label1:
+  ret i32 1
+label2:
+  ret i32 0
+}
+
+define i32 @br_bit_test_ne_0(i32 %c) {
+; CHECK-LABEL: br_bit_test_ne_0:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    movih32 a1, 2
+; CHECK-NEXT:    and16 a0, a1
+; CHECK-NEXT:    bez32 a0, .LBB146_2
+; CHECK-NEXT:  # %bb.1: # %label1
+; CHECK-NEXT:    movi16 a0, 1
+; CHECK-NEXT:    rts16
+; CHECK-NEXT:  .LBB146_2: # %label2
+; CHECK-NEXT:    movi16 a0, 0
+; CHECK-NEXT:    rts16
+;
+; GENERIC-LABEL: br_bit_test_ne_0:
+; GENERIC:       # %bb.0:
+; GENERIC-NEXT:    .cfi_def_cfa_offset 0
+; GENERIC-NEXT:    subi16 sp, sp, 4
+; GENERIC-NEXT:    .cfi_def_cfa_offset 4
+; GENERIC-NEXT:    movi16 a1, 0
+; GENERIC-NEXT:    lsli16 a2, a1, 24
+; GENERIC-NEXT:    movi16 a3, 2
+; GENERIC-NEXT:    lsli16 a3, a3, 16
+; GENERIC-NEXT:    or16 a3, a2
+; GENERIC-NEXT:    lsli16 a2, a1, 8
+; GENERIC-NEXT:    or16 a2, a3
+; GENERIC-NEXT:    or16 a2, a1
+; GENERIC-NEXT:    and16 a2, a0
+; GENERIC-NEXT:    cmpnei16 a2, 0
+; GENERIC-NEXT:    bf16 .LBB146_2
+; GENERIC-NEXT:  # %bb.1: # %label1
+; GENERIC-NEXT:    movi16 a0, 1
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+; GENERIC-NEXT:  .LBB146_2: # %label2
+; GENERIC-NEXT:    movi16 a0, 0
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+  %t0 = and i32 %c, 131072
+  %t1 = icmp ne i32 %t0, 0
+  br i1 %t1, label %label1, label %label2
+label1:
+  ret i32 1
+label2:
+  ret i32 0
+}
+
+define i32 @br_bit_test_eq_mask(i32 %c) {
+; CHECK-LABEL: br_bit_test_eq_mask:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    movih32 a1, 2
+; CHECK-NEXT:    and16 a0, a1
+; CHECK-NEXT:    bez32 a0, .LBB147_2
+; CHECK-NEXT:  # %bb.1: # %label1
+; CHECK-NEXT:    movi16 a0, 1
+; CHECK-NEXT:    rts16
+; CHECK-NEXT:  .LBB147_2: # %label2
+; CHECK-NEXT:    movi16 a0, 0
+; CHECK-NEXT:    rts16
+;
+; GENERIC-LABEL: br_bit_test_eq_mask:
+; GENERIC:       # %bb.0:
+; GENERIC-NEXT:    .cfi_def_cfa_offset 0
+; GENERIC-NEXT:    subi16 sp, sp, 4
+; GENERIC-NEXT:    .cfi_def_cfa_offset 4
+; GENERIC-NEXT:    movi16 a1, 0
+; GENERIC-NEXT:    lsli16 a2, a1, 24
+; GENERIC-NEXT:    movi16 a3, 2
+; GENERIC-NEXT:    lsli16 a3, a3, 16
+; GENERIC-NEXT:    or16 a3, a2
+; GENERIC-NEXT:    lsli16 a2, a1, 8
+; GENERIC-NEXT:    or16 a2, a3
+; GENERIC-NEXT:    or16 a2, a1
+; GENERIC-NEXT:    and16 a2, a0
+; GENERIC-NEXT:    cmpnei16 a2, 0
+; GENERIC-NEXT:    bf16 .LBB147_2
+; GENERIC-NEXT:  # %bb.1: # %label1
+; GENERIC-NEXT:    movi16 a0, 1
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+; GENERIC-NEXT:  .LBB147_2: # %label2
+; GENERIC-NEXT:    movi16 a0, 0
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+  %t0 = and i32 %c, 131072
+  %t1 = icmp eq i32 %t0, 131072
+  br i1 %t1, label %label1, label %label2
+label1:
+  ret i32 1
+label2:
+  ret i32 0
+}
+
+define i32 @br_bit_test_ne_mask(i32 %c) {
+; CHECK-LABEL: br_bit_test_ne_mask:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    movih32 a1, 2
+; CHECK-NEXT:    and16 a0, a1
+; CHECK-NEXT:    bnez32 a0, .LBB148_2
+; CHECK-NEXT:  # %bb.1: # %label1
+; CHECK-NEXT:    movi16 a0, 1
+; CHECK-NEXT:    rts16
+; CHECK-NEXT:  .LBB148_2: # %label2
+; CHECK-NEXT:    movi16 a0, 0
+; CHECK-NEXT:    rts16
+;
+; GENERIC-LABEL: br_bit_test_ne_mask:
+; GENERIC:       # %bb.0:
+; GENERIC-NEXT:    .cfi_def_cfa_offset 0
+; GENERIC-NEXT:    subi16 sp, sp, 4
+; GENERIC-NEXT:    .cfi_def_cfa_offset 4
+; GENERIC-NEXT:    movi16 a1, 0
+; GENERIC-NEXT:    lsli16 a2, a1, 24
+; GENERIC-NEXT:    movi16 a3, 2
+; GENERIC-NEXT:    lsli16 a3, a3, 16
+; GENERIC-NEXT:    or16 a3, a2
+; GENERIC-NEXT:    lsli16 a2, a1, 8
+; GENERIC-NEXT:    or16 a2, a3
+; GENERIC-NEXT:    or16 a2, a1
+; GENERIC-NEXT:    and16 a2, a0
+; GENERIC-NEXT:    cmpnei16 a2, 0
+; GENERIC-NEXT:    bt16 .LBB148_2
+; GENERIC-NEXT:  # %bb.1: # %label1
+; GENERIC-NEXT:    movi16 a0, 1
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+; GENERIC-NEXT:  .LBB148_2: # %label2
+; GENERIC-NEXT:    movi16 a0, 0
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+  %t0 = and i32 %c, 131072
+  %t1 = icmp ne i32 %t0, 131072
+  br i1 %t1, label %label1, label %label2
+label1:
+  ret i32 1
+label2:
+  ret i32 0
+}
+
+define i32 @br_lowbit_test_ne_0(i32 %c) {
+; CHECK-LABEL: br_lowbit_test_ne_0:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    andi32 a0, a0, 256
+; CHECK-NEXT:    bez32 a0, .LBB149_2
+; CHECK-NEXT:  # %bb.1: # %label1
+; CHECK-NEXT:    movi16 a0, 1
+; CHECK-NEXT:    rts16
+; CHECK-NEXT:  .LBB149_2: # %label2
+; CHECK-NEXT:    movi16 a0, 0
+; CHECK-NEXT:    rts16
+;
+; GENERIC-LABEL: br_lowbit_test_ne_0:
+; GENERIC:       # %bb.0:
+; GENERIC-NEXT:    .cfi_def_cfa_offset 0
+; GENERIC-NEXT:    subi16 sp, sp, 4
+; GENERIC-NEXT:    .cfi_def_cfa_offset 4
+; GENERIC-NEXT:    movi16 a1, 0
+; GENERIC-NEXT:    lsli16 a2, a1, 24
+; GENERIC-NEXT:    lsli16 a3, a1, 16
+; GENERIC-NEXT:    or16 a3, a2
+; GENERIC-NEXT:    movi16 a2, 1
+; GENERIC-NEXT:    lsli16 a2, a2, 8
+; GENERIC-NEXT:    or16 a2, a3
+; GENERIC-NEXT:    or16 a2, a1
+; GENERIC-NEXT:    and16 a2, a0
+; GENERIC-NEXT:    cmpnei16 a2, 0
+; GENERIC-NEXT:    bf16 .LBB149_2
+; GENERIC-NEXT:  # %bb.1: # %label1
+; GENERIC-NEXT:    movi16 a0, 1
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+; GENERIC-NEXT:  .LBB149_2: # %label2
+; GENERIC-NEXT:    movi16 a0, 0
+; GENERIC-NEXT:    addi16 sp, sp, 4
+; GENERIC-NEXT:    rts16
+  %t0 = and i32 %c, 256
+  %t1 = icmp ne i32 %t0, 0
+  br i1 %t1, label %label1, label %label2
+label1:
+  ret i32 1
+label2:
+  ret i32 0
+}