| Max Kazantsev | 2e44d29 | 2017-03-31 12:05:30 +0000 | [diff] [blame] | 1 | ; RUN: opt -indvars -S < %s | FileCheck %s |
| 2 | |
| 3 | declare void @use(i1) |
| 4 | |
| 5 | declare void @llvm.experimental.guard(i1, ...) |
| 6 | |
| 7 | define void @test_01(i8 %t) { |
| 8 | ; CHECK-LABEL: test_01 |
| 9 | entry: |
| 10 | %st = sext i8 %t to i16 |
| 11 | %cmp1 = icmp slt i16 %st, 42 |
| 12 | call void(i1, ...) @llvm.experimental.guard(i1 %cmp1) [ "deopt"() ] |
| 13 | br label %loop |
| 14 | |
| 15 | loop: |
| 16 | ; CHECK-LABEL: loop |
| 17 | %idx = phi i8 [ %t, %entry ], [ %idx.inc, %loop ] |
| 18 | %idx.inc = add i8 %idx, 1 |
| 19 | %c = icmp slt i8 %idx, 42 |
| 20 | ; CHECK: call void @use(i1 true) |
| 21 | call void @use(i1 %c) |
| 22 | %be = icmp slt i8 %idx.inc, 42 |
| 23 | br i1 %be, label %loop, label %exit |
| 24 | |
| 25 | exit: |
| 26 | ret void |
| 27 | } |
| 28 | |
| 29 | define void @test_02(i8 %t) { |
| 30 | ; CHECK-LABEL: test_02 |
| 31 | entry: |
| 32 | %t.ptr = inttoptr i8 %t to i8* |
| 33 | %p.42 = inttoptr i8 42 to i8* |
| 34 | %cmp1 = icmp slt i8* %t.ptr, %p.42 |
| 35 | call void(i1, ...) @llvm.experimental.guard(i1 %cmp1) [ "deopt"() ] |
| 36 | br label %loop |
| 37 | |
| 38 | loop: |
| 39 | ; CHECK-LABEL: loop |
| 40 | %idx = phi i8* [ %t.ptr, %entry ], [ %snext, %loop ] |
| 41 | %snext = getelementptr inbounds i8, i8* %idx, i64 1 |
| 42 | %c = icmp slt i8* %idx, %p.42 |
| 43 | ; CHECK: call void @use(i1 true) |
| 44 | call void @use(i1 %c) |
| 45 | %be = icmp slt i8* %snext, %p.42 |
| 46 | br i1 %be, label %loop, label %exit |
| 47 | |
| 48 | exit: |
| 49 | ret void |
| 50 | } |