; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 6 ; RUN: opt < %s -disable-output "-passes=print" 2>&1 \ ; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-ALL ; RUN: opt < %s -disable-output "-passes=print" -da-enable-dependence-test=exact-rdiv 2>&1 \ ; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-EXACT-RDIV ; max_i = INT64_MAX/6 // 1537228672809129301 ; for (i = 0; i <= max_i; i++) { ; A[-6*i + INT64_MAX] = 0; ; } ; ; for (i = 0; i <= max_i + 1; i++) { ; if (i) ; A[3*i - 2] = 1; ; } ; ; memory access | i = 1 | i = 768614336404564651 | i = max_i ; -------------------------|-------|------------------------|---------------- ; A[-6*i + INT64_MAX] | | A[3*max_i - 2] | A[1] ; A[3*i - 2] | A[1] | | A[3*max_i - 2] ; ; There is a dependency between the two stores. ; define void @exact_rdiv_delta_ovfl(ptr %A) { ; CHECK-ALL-LABEL: 'exact_rdiv_delta_ovfl' ; CHECK-ALL-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 0, ptr %gep.0, align 1 ; CHECK-ALL-NEXT: da analyze - none! ; CHECK-ALL-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 1, ptr %gep.1, align 1 ; CHECK-ALL-NEXT: da analyze - output [|<]! ; CHECK-ALL-NEXT: Src: store i8 1, ptr %gep.1, align 1 --> Dst: store i8 1, ptr %gep.1, align 1 ; CHECK-ALL-NEXT: da analyze - none! ; ; CHECK-EXACT-RDIV-LABEL: 'exact_rdiv_delta_ovfl' ; CHECK-EXACT-RDIV-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 0, ptr %gep.0, align 1 ; CHECK-EXACT-RDIV-NEXT: da analyze - output [*]! ; CHECK-EXACT-RDIV-NEXT: Src: store i8 0, ptr %gep.0, align 1 --> Dst: store i8 1, ptr %gep.1, align 1 ; CHECK-EXACT-RDIV-NEXT: da analyze - output [|<]! ; CHECK-EXACT-RDIV-NEXT: Src: store i8 1, ptr %gep.1, align 1 --> Dst: store i8 1, ptr %gep.1, align 1 ; CHECK-EXACT-RDIV-NEXT: da analyze - output [*]! ; entry: br label %loop.0 loop.0: %i.0 = phi i64 [ 0, %entry ], [ %i.0.inc, %loop.0 ] %offset.0 = phi i64 [ 9223372036854775807, %entry ], [ %offset.0.next, %loop.0 ] %gep.0 = getelementptr i8, ptr %A, i64 %offset.0 store i8 0, ptr %gep.0 %i.0.inc = add i64 %i.0, 1 %offset.0.next = add i64 %offset.0, -6 %ec.0 = icmp eq i64 %i.0, 1537228672809129301 br i1 %ec.0, label %loop.1.header, label %loop.0 loop.1.header: %i.1 = phi i64 [ 0, %loop.0 ], [ %i.1.inc, %loop.1.latch ] %offset.1 = phi i64 [ -2, %loop.0 ], [ %offset.1.next, %loop.1.latch ] %cond.store = icmp ne i64 %i.1, 0 br i1 %cond.store, label %if.store, label %loop.1.latch if.store: %gep.1 = getelementptr i8, ptr %A, i64 %offset.1 store i8 1, ptr %gep.1 br label %loop.1.latch loop.1.latch: %i.1.inc = add i64 %i.1, 1 %offset.1.next = add i64 %offset.1, 3 %ec.1 = icmp eq i64 %i.1, 1537228672809129302 br i1 %ec.1, label %exit, label %loop.1.header exit: ret void } ;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line: ; CHECK: {{.*}}