1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -passes=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 @test1_sext_op_can_be_undef_but_frozen(i1 %c.1, i1 %c.2) {
36 ; CHECK-LABEL: @test1_sext_op_can_be_undef_but_frozen(
37 ; CHECK-NEXT: br i1 [[C_1:%.*]], label [[TRUE_1:%.*]], label [[FALSE:%.*]]
39 ; CHECK-NEXT: br i1 [[C_2:%.*]], label [[TRUE_2:%.*]], label [[EXIT:%.*]]
41 ; CHECK-NEXT: br label [[EXIT]]
43 ; CHECK-NEXT: br label [[EXIT]]
45 ; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[TRUE_1]] ], [ 1, [[TRUE_2]] ], [ undef, [[FALSE]] ]
46 ; CHECK-NEXT: [[P_FR:%.*]] = freeze i32 [[P]]
47 ; CHECK-NEXT: [[EXT:%.*]] = sext i32 [[P_FR]] to i64
48 ; CHECK-NEXT: ret i64 [[EXT]]
50 br i1 %c.1, label %true.1, label %false
53 br i1 %c.2, label %true.2, label %exit
62 %p = phi i32 [ 0, %true.1 ], [ 1, %true.2], [ undef, %false ]
64 %ext = sext i32 %p.fr to i64
68 define i64 @test2(i32 %x) {
69 ; CHECK-LABEL: @test2(
70 ; CHECK-NEXT: [[P:%.*]] = and i32 [[X:%.*]], 15
71 ; CHECK-NEXT: [[EXT:%.*]] = zext nneg i32 [[P]] to i64
72 ; CHECK-NEXT: ret i64 [[EXT]]
75 %ext = sext i32 %p to i64
79 define i64 @test3(i1 %c.1, i1 %c.2) {
80 ; CHECK-LABEL: @test3(
81 ; CHECK-NEXT: br i1 [[C_1:%.*]], label [[TRUE_1:%.*]], label [[FALSE:%.*]]
83 ; CHECK-NEXT: br i1 [[C_2:%.*]], label [[TRUE_2:%.*]], label [[EXIT:%.*]]
85 ; CHECK-NEXT: br label [[EXIT]]
87 ; CHECK-NEXT: br label [[EXIT]]
89 ; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[TRUE_1]] ], [ 1, [[TRUE_2]] ], [ 3, [[FALSE]] ]
90 ; CHECK-NEXT: [[EXT:%.*]] = zext nneg i32 [[P]] to i64
91 ; CHECK-NEXT: ret i64 [[EXT]]
93 br i1 %c.1, label %true.1, label %false
96 br i1 %c.2, label %true.2, label %exit
105 %p = phi i32 [ 0, %true.1 ], [ 1, %true.2], [ 3, %false ]
106 %ext = sext i32 %p to i64