1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -sccp -S %s -o -| FileCheck %s
4 define i64 @test1_sext_op_can_be_undef(i1 %c.1, i1 %c.2) {
5 ; CHECK-LABEL: @test1_sext_op_can_be_undef(
6 ; CHECK-NEXT: br i1 [[C_1:%.*]], label [[TRUE_1:%.*]], label [[FALSE:%.*]]
8 ; CHECK-NEXT: br i1 [[C_2:%.*]], label [[TRUE_2:%.*]], label [[EXIT:%.*]]
10 ; CHECK-NEXT: br label [[EXIT]]
12 ; CHECK-NEXT: br label [[EXIT]]
14 ; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[TRUE_1]] ], [ 1, [[TRUE_2]] ], [ undef, [[FALSE]] ]
15 ; CHECK-NEXT: [[EXT:%.*]] = sext i32 [[P]] to i64
16 ; CHECK-NEXT: ret i64 [[EXT]]
18 br i1 %c.1, label %true.1, label %false
21 br i1 %c.2, label %true.2, label %exit
30 %p = phi i32 [ 0, %true.1 ], [ 1, %true.2], [ undef, %false ]
31 %ext = sext i32 %p to i64
35 define i64 @test2(i32 %x) {
36 ; CHECK-LABEL: @test2(
37 ; CHECK-NEXT: [[P:%.*]] = and i32 [[X:%.*]], 15
38 ; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[P]] to i64
39 ; CHECK-NEXT: ret i64 [[TMP1]]
42 %ext = sext i32 %p to i64
46 define i64 @test3(i1 %c.1, i1 %c.2) {
47 ; CHECK-LABEL: @test3(
48 ; CHECK-NEXT: br i1 [[C_1:%.*]], label [[TRUE_1:%.*]], label [[FALSE:%.*]]
50 ; CHECK-NEXT: br i1 [[C_2:%.*]], label [[TRUE_2:%.*]], label [[EXIT:%.*]]
52 ; CHECK-NEXT: br label [[EXIT]]
54 ; CHECK-NEXT: br label [[EXIT]]
56 ; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[TRUE_1]] ], [ 1, [[TRUE_2]] ], [ 3, [[FALSE]] ]
57 ; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[P]] to i64
58 ; CHECK-NEXT: ret i64 [[TMP1]]
60 br i1 %c.1, label %true.1, label %false
63 br i1 %c.2, label %true.2, label %exit
72 %p = phi i32 [ 0, %true.1 ], [ 1, %true.2], [ 3, %false ]
73 %ext = sext i32 %p to i64