| Mehdi Amini | 044cb34 | 2015-10-07 18:14:25 +0000 | [diff] [blame] | 1 | ; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s |
| 2 | |
| 3 | define i32 @branch_true(i32 %x, i32 %y) { |
| 4 | ; CHECK-LABEL: Classifying expressions for: @branch_true |
| 5 | entry: |
| 6 | br i1 true, label %add, label %merge |
| 7 | |
| 8 | add: |
| 9 | %sum = add i32 %x, %y |
| 10 | br label %merge |
| 11 | |
| 12 | merge: |
| 13 | %v = phi i32 [ %sum, %add ], [ %x, %entry ] |
| 14 | ; CHECK: %v = phi i32 [ %sum, %add ], [ %x, %entry ] |
| 15 | ; CHECK-NEXT: --> (%x + %y) U: full-set S: full-set |
| 16 | ret i32 %v |
| 17 | } |
| 18 | |
| 19 | define i32 @branch_false(i32 %x, i32 %y) { |
| 20 | ; CHECK-LABEL: Classifying expressions for: @branch_false |
| 21 | entry: |
| 22 | br i1 false, label %add, label %merge |
| 23 | |
| 24 | add: |
| 25 | %sum = add i32 %x, %y |
| 26 | br label %merge |
| 27 | |
| 28 | merge: |
| 29 | %v = phi i32 [ %sum, %add ], [ %x, %entry ] |
| 30 | ; CHECK: %v = phi i32 [ %sum, %add ], [ %x, %entry ] |
| 31 | ; CHECK-NEXT: --> %x U: full-set S: full-set |
| 32 | ret i32 %v |
| 33 | } |
| 34 | |
| 35 | define i32 @select_true(i32 %x, i32 %y) { |
| 36 | ; CHECK-LABEL: Classifying expressions for: @select_true |
| 37 | entry: |
| 38 | %v = select i1 true, i32 %x, i32 %y |
| 39 | ; CHECK: %v = select i1 true, i32 %x, i32 %y |
| 40 | ; CHECK-NEXT: --> %x U: full-set S: full-set |
| 41 | ret i32 %v |
| 42 | } |
| 43 | |
| 44 | define i32 @select_false(i32 %x, i32 %y) { |
| 45 | ; CHECK-LABEL: Classifying expressions for: @select_false |
| 46 | entry: |
| 47 | %v = select i1 false, i32 %x, i32 %y |
| 48 | ; CHECK: %v = select i1 false, i32 %x, i32 %y |
| 49 | ; CHECK-NEXT: --> %y U: full-set S: full-set |
| 50 | ret i32 %v |
| 51 | } |