| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; Check that negative oob gep do not generate invalid check. |
| ; RUN: opt < %s -passes=bounds-checking -S | FileCheck %s |
| target datalayout = "e-p:64:64:64-p1:16:16:16-p2:64:64:64:48-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" |
| |
| |
| @str = global [100 x i8] zeroinitializer, align 1 |
| |
| define i16 @main() { |
| ; CHECK-LABEL: @main( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[FOR_COND:%.*]] |
| ; CHECK: for.cond: |
| ; CHECK-NEXT: [[I_0:%.*]] = phi i8 [ 65, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[TMP4:%.*]] ] |
| ; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i8 [[I_0]], 76 |
| ; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_END:%.*]], label [[TMP4]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[I_0_C:%.*]] = sext i8 [[I_0]] to i64 |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 -65, [[I_0_C]] |
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr getelementptr (i8, ptr @str, i8 -65), i8 [[I_0]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = sub i64 100, [[TMP0]] |
| ; CHECK-NEXT: store i8 [[I_0]], ptr [[GEP]], align 1 |
| ; CHECK-NEXT: [[INC]] = add nuw nsw i8 [[I_0]], 1 |
| ; CHECK-NEXT: br label [[FOR_COND]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret i16 0 |
| ; |
| entry: |
| br label %for.cond |
| |
| for.cond: |
| %i.0 = phi i8 [ 65, %entry ], [ %inc, %for.inc ] |
| %exitcond.not = icmp eq i8 %i.0, 76 |
| br i1 %exitcond.not, label %for.end, label %for.inc |
| |
| for.inc: ; preds = %for.cond |
| %gep = getelementptr i8, ptr getelementptr (i8, ptr @str, i8 -65), i8 %i.0 |
| store i8 %i.0, ptr %gep, align 1 |
| %inc = add nuw nsw i8 %i.0, 1 |
| br label %for.cond |
| |
| for.end: |
| ret i16 0 |
| } |
| |
