| ; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s |
| |
| %struct.anon = type { i8 } |
| %struct.S = type { i32 } |
| |
| @a = common global %struct.anon zeroinitializer, align 1 |
| @b = common global %struct.S zeroinitializer, align 4 |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define i32 @main() { |
| ; CHECK-LABEL: Classifying expressions for: @main |
| store i8 0, i8* getelementptr inbounds (%struct.anon, %struct.anon* @a, i64 0, i32 0), align 1 |
| br label %loop |
| |
| loop: |
| %storemerge1 = phi i8 [ 0, %0 ], [ %inc, %loop ] |
| %m = load volatile i32, i32* getelementptr inbounds (%struct.S, %struct.S* @b, i64 0, i32 0), align 4 |
| %inc = add nuw i8 %storemerge1, 1 |
| ; CHECK: %inc = add nuw i8 %storemerge1, 1 |
| ; CHECK-NEXT: --> {1,+,1}<nuw><%loop> |
| ; CHECK-NOT: --> {1,+,1}<nuw><nsw><%loop> |
| %exitcond = icmp eq i8 %inc, -128 |
| br i1 %exitcond, label %exit, label %loop |
| |
| exit: |
| store i8 -128, i8* getelementptr inbounds (%struct.anon, %struct.anon* @a, i64 0, i32 0), align 1 |
| ret i32 0 |
| } |