| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -indvars -S < %s | FileCheck %s |
| |
| ; Check the case where one exit has a pointer EC, and the other doesn't. |
| ; Note that this test case is really really fragile. Removing any |
| ; instruction in the below causes the result to differ. Note that the lack |
| ; of a data layout (with pointer size info) is critical to getting a pointer |
| ; EC returned by SCEV. |
| |
| @global = external global [0 x i8], align 1 |
| |
| define void @foo() { |
| ; CHECK-LABEL: @foo( |
| ; CHECK-NEXT: bb: |
| ; CHECK-NEXT: br label [[BB3:%.*]] |
| ; CHECK: bb3: |
| ; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i8, i8* getelementptr inbounds ([0 x i8], [0 x i8]* @global, i64 0, i64 2), i64 -1 |
| ; CHECK-NEXT: [[TMP6:%.*]] = load i8, i8* [[TMP4]], align 1 |
| ; CHECK-NEXT: [[TMP5:%.*]] = icmp ugt i8* [[TMP4]], getelementptr inbounds ([0 x i8], [0 x i8]* @global, i64 0, i64 500) |
| ; CHECK-NEXT: br i1 [[TMP5]], label [[BB7:%.*]], label [[BB11:%.*]] |
| ; CHECK: bb7: |
| ; CHECK-NEXT: [[TMP8:%.*]] = zext i8 [[TMP6]] to i64 |
| ; CHECK-NEXT: br i1 true, label [[BB11]], label [[BB3]] |
| ; CHECK: bb11: |
| ; CHECK-NEXT: ret void |
| ; |
| bb: |
| br label %bb3 |
| |
| bb3: ; preds = %bb7, %bb2 |
| %tmp = phi i8* [ %tmp4, %bb7 ], [ getelementptr inbounds ([0 x i8], [0 x i8]* @global, i64 0, i64 2), %bb ] |
| %tmp4 = getelementptr inbounds i8, i8* %tmp, i64 -1 |
| %tmp6 = load i8, i8* %tmp4, align 1 |
| %tmp5 = icmp ugt i8* %tmp4, getelementptr inbounds ([0 x i8], [0 x i8]* @global, i64 0, i64 500) |
| br i1 %tmp5, label %bb7, label %bb11 |
| |
| bb7: ; preds = %bb3 |
| %tmp8 = zext i8 %tmp6 to i64 |
| %tmp10 = icmp eq i16 0, 0 |
| br i1 %tmp10, label %bb11, label %bb3 |
| |
| bb11: ; preds = %bb7, %bb3 |
| ret void |
| } |
